Chapter 5: Running with Kujo's Sister in the
Early Morning
The morning after meeting Mizuki with Karen.
As the sun began to rise in the eastern sky, I was diligently running in a
tracksuit.
My destination was a forest park on the outskirts of town.
This isn't just any park. The forest park I aimed for spans over a hundred
hectares, about the size of twenty baseball dome stadiums in the city centre.
On holidays, it bustles with parents and children, and seasonal events are
held, making it a place of relaxation for local residents.
After about twenty minutes, I arrived at the entrance of the forest park,
where Mizuki Kujo, also in a tracksuit, was waiting for me.
It was a little past five o'clock and there was hardly anyone around.
Meeting at this time was not a coincidence.
Last night, after finishing my conversation with Karen, Mizuki had called
and we agreed to meet at this time.
"Good morning, Mizuki."
A refreshing morning breeze blew from the forest park. With a fresh smile
to match the breeze, I greeted Mizuki.
Mizuki, however, returned a short [Morning] with a gloomy expression that
didn't suit the refreshing morning.
I stared at Mizuki.
Last night on the phone, Mizuki had clearly stated that she would become
my s*x friend. She accepted the role to reduce Karen's burden.
Her attitude on the phone was also subdued. Occasionally, I could sense
frustration on the other side of the smartphone, but at least she didn't voice
any objections. The fact that she was ejaculated inside in front of Karen
must have been a great shock.
Now, opposing me is not wise. Mizuki must be telling herself that.
However, now that we were face to face, it was clear that Mizuki harboured
resentment towards me. She was obviously anxious about what might
happen after being called to a deserted park early in the morning.
I spoke to Mizuki.
"Alright, let's run."
"Huh?"
On the way here, my mind had switched from erotic mode to exercise mode
and I encouraged the bewildered Mizuki to resume running.
By June, it's not unusual for days to be as hot as mid-summer, but the early
morning forest park was wrapped in a somewhat chilly air. The morning
mist rising from the park's trees seeped into the running course, and with
each breath, the refreshing air filled my lungs.
Yeah, this feels better than I thought. I intended to enjoy humiliating the
earnest Mizuki outdoors, but as I ran, my lascivious thoughts seemed to
sweat away.
I've always liked exercising. I continued running for a while without any
ulterior motives.
Before I knew it, the clock in the park pointed to six o'clock.
If I just end up running, waking up early would be pointless. Finally
realigning my thoughts to the erotic, I looked at Mizuki, who had been
running beside me the whole time.
From Mizuki's perspective, having sworn to become a s*x friend under
duress, being called out early the next morning, she didn't expect it to end
without incident.
Yet, I kept running without making any advances. She must be utterly
confused about my intentions.
"Mizuki."
"Y-Yes!?"
Mizuki, who had been running silently for almost an hour, responded with a
raised voice, surprised.
With a somewhat tense look, Mizuki directed her gaze at me as I pointed to
a rest hut in the park.
"Let's go there."
"...Understood."
When I started walking in that direction, Mizuki followed quietly.
The place we arrived at was a simple wooden hut in the style of a gazebo. It
had a roof and pillars, but that was it. There was a fence separating the hut
from the outside, but it was only about a metre high.
If someone walked by, they would quickly notice that Mizuki and I were
inside the hut.
Once inside the hut, I laid a towel I had brought on one of the wooden
benches, then removed my tracksuit along with my underwear. Sitting down
on the towel, my exposed penis was covered in sweat, emitting a pungent,
indescribable sexual odor. Even though there was no one around, the
tension and sense of guilt from exposing myself outdoors felt quite
refreshing. The cool early morning breeze on my damp penis was somewhat
addictive.
When I looked at Mizuki, she was staring blankly at my sudden act of
exposing myself. I spoke to her nonchalantly.
"Mizuki. Don't just stand there. Hurry up and take care of this. You're my
s*x friend, after all."
I flicked my erect penis with my finger.
Mizuki frowned in disgust but didn't say no or ask me to stop. She had
learned from yesterday that resisting would only increase Karen's burden.
With a sigh, Mizuki stood in front of me, glancing around nervously, then
kneeled in front of my penis, facing it directly.
But she didn't move from there.
As I watched her silently, Mizuki asked hesitantly.
"...What should I do?"
"Do whatever you want."
"Whatever I want...?"
"Yes, do whatever you want. You can use your hand, lick it with your
tongue, take it in your mouth, press your breasts against it, or insert it into
your pussy. Do whatever you want."
I had been shamelessly mentioning my penis and her pussy to provoke
Mizuki's embarrassment, knowing she wasn't used to men.
As expected, Mizuki glared at me with sharp eyes after hearing that.
However, I looked back at her calmly without showing any sign of concern.
Just that was enough for Mizuki to bite her lip and look down.
Even though she occasionally glanced at my penis from her kneeling
position, she didn't do anything more.
My penis, excited from its first outdoor exposure, gradually lost its
hardness.
After about two minutes of no action, I let out an exaggerated sigh.
Mizuki's shoulders flinched, perhaps expecting to be yelled at.
Standing up, I began putting my tracksuit and underwear back on. The feel
of the sweaty underwear made me cringe internally, but I spoke to Mizuki
in a cold tone.
"I'm going home, so do whatever you want afterward."
Seeing me start to pack up, Mizuki blinked in confusion.
Then, she timidly opened her mouth.
"...Is it okay?"
"Yes. If I stay with you any longer, I won't have time to ejaculate inside
Karen."
"Uh? But.."
I asked Mizuki in a low voice, as if cutting her off.
"But?"
"If I take Karen's place and deal with you..."
"Ah, yes, you said that on the phone yesterday. So? Have you done
anything to take Karen's place?"
My gaze told her she hadn't done anything, and Mizuki furrowed her brows
and looked away.
After a while, she spoke weakly.
"If you tell me what to do, I'll..."
"How ridiculous. Why should I have to explain it to you in detail? You said
you'd be my s*x friend, but you didn't even bother to research how to
please a man?"
"That's..."
Looking at Mizuki, who seemed about to say it wasn't her place to research
that, I laughed derisively.
"Yesterday on the phone, you seemed to make a big decision, but it turns
out it was just talk. Pathetic. Well, I figured as much from the way you
abandoned Karen yesterday."
Mizuki raised her eyes in anger at my cold words.
"I did not abandon Karen!"
"Oh yes, you did. You abandoned her and just watched as I ejaculated
inside her. Even now, knowing I'm going to ejaculate inside Karen, you're
doing nothing."
If that's not abandonment, then what is? I said, then gave Mizuki a gentle
smile.
"Well, don't worry about it. I'm sure Karen will be happy."
"...What do you mean by that?"
"Karen was worried about you. Knowing you ran away for your own sake
might actually bring her some relief. She'll likely try even harder to tighten
her pussy for me. Her pussy feels amazing. Yesterday, I only had time to
come inside her once, but today, since I woke up early, I have more time.
I'll be able to come inside her at least three times."
I looked at Mizuki with a smirk.
"If you had taken care of me, at least one of those times would have been
saved from Karen's burden. But talking to you is pointless. Yesterday, you
called me a coward and all sorts of things, but the real coward is you,
Mizuki Kujo."
With that, I turned to leave the rest hut.
I stopped not of my own will but because Mizuki grabbed my right hand,
clinging to it, not letting go.
With a trembling voice, Mizuki said,
"I'll do it properly. I'll do it, so please... don't leave."
"Is this just more empty talk?"
"This time, I'll do it properly!"
Hearing that, I turned to face Mizuki and crossed my arms, standing firmly.
This was my way of showing I had no intention of doing anything myself.
Understanding this, Mizuki, with a flushed face, reached for the waistband
of my pants.
"...Excuse me."
Mizuki pulled down my underwear and tracksuit to my knees. The tip of my
penis, which sprang out, brushed against Mizuki's cheek.
Though she looked like she might cry just from that, she seemed to
understand this was her last chance. Firmly pressing her lips together, she
hesitantly grasped my penis with her right hand.
"It's... smelly, hot... slimy... feels gross..."
Unconsciously, Mizuki's raw impressions spilled out.
Her hand movements were far from proficient. She timidly touched the
glans, traced around the ridge, and patted the shaft, doing nothing more than
producing a tickling sensation.
Yet, the situation of being serviced by Kujo's sister in an early morning
park excited me despite myself. Like a snake raising its head, my penis
gradually regained its hardness.
Seeing this, Mizuki looked up at me in distress.
"Um, it's gotten bigger..."
"Yes, you made it bigger. How does it feel to make a man's penis erect with
your own hands?"
"..."
As I teased her, Mizuki glared up at me resentfully from her kneeling
position.
However, she quickly resumed focusing on my penis, continuing her
clumsy service.
"...There... it twitched... here like this...?"
Mizuki murmured as she explored ways to stimulate my penis. Ten days
ago, I might have ejaculated at this point.
However, having experienced s*x with Karen, the stimulation Mizuki
provided wasn't enough to make me come. While I got hard, I couldn't
climax. This situation persisted for a while.
Eventually, my once rigid penis began to soften. I had grown accustomed to
—no, bored of—Mizuki's stimulation.
Mizuki seemed to notice this and, in a panic, continued to touch my penis,
but it didn't respond. Watching her desperate attempts to revive it, I
contemplated my next move.
Then Mizuki spoke.
"Um..."
Tears streaming down her face, Mizuki awkwardly stroked my penis,
looking at me as if wanting to say something. She didn't ask what to do,
remembering how I rebuffed her earlier request for advice.
Looking back into her eyes, an idea struck me. I smiled slyly and said,
"Mizuki, you're beautiful."
Mizuki's eyes widened in surprise at my sudden statement.
I continued without hesitation.
"Because of that, you must have caught the eyes of many men. Especially
in those sexy track uniforms, feeling men's gazes must have been an
everyday occurrence, right?"
"..."
Mizuki's breath hitched and she looked away.
Mizuki didn't respond, but it was almost certain. The source of Mizuki's
caution and aversion towards men probably stemmed from experiences like
these.
"Do you know where men were looking at you during those times?"
"That is..."
"That's where men get excited."
Without specifying, I ended the conversation.
Mizuki seemed to be pondering the meaning of my words.
Eventually, she released my penis and began to take off her tracksuit top.
Underneath the tracksuit, she revealed a simple black running shirt.
The two mounds of her breasts pushed up against the shirt, modestly
asserting their presence. Seeing this made my penis twitch involuntarily.
Realising she had made the right move, Mizuki resumed stimulating my
penis with her right hand.
Then, grasping the hem of her running shirt with her left hand—
"Oh!"
I couldn't help but exclaim.
Mizuki lifted her shirt, exposing her bare skin.
First, her toned lower abdomen appeared, followed by her small navel, then
her midsection. The fresh skin of a young girl was gradually exposed to the
outside air.
Still, Mizuki didn't stop lifting her shirt.
It wasn't hesitation; it was more like she knew if she hesitated, she wouldn't
be able to continue. Mizuki pulled her running shirt all the way up to her
neck in one swift motion.
In my view was a grey sports bra with black trim.
"——!"
A silent scream escaped from Mizuki's lips.
Despite doing it herself, exposing her bra to a man outdoors must have been
an immense humiliation for Mizuki.
Yet, she continued to stroke my penis with her right hand, showing her
resolve and earnestness.
As for me, seeing the sports bra instantly heightened my desire to ejaculate.
I was already quite excited when Mizuki lifted her shirt on her own, but I
never expected her to reveal her underwear.
A girl who had only felt disdain for male gazes now voluntarily exposed her
skin, revealed her underwear, and continued to stroke my penis to make me
ejaculate.
It's impossible not to get excited in such a situation.
With her earlobes flushed red with embarrassment, Mizuki looked up at me
as if to ask if this was okay.
Who could have predicted that the girl who had looked at me with contempt
and called me a coward just yesterday morning would be exposing herself
like this just a day later?
At that moment.
"—Uuu!"
I ejaculated towards Mizuki almost explosively.
My penis twitches violently, shooting out bursts of semen. The cum
splattered on Mizuki's hand, face, chest, shirt, tracksuit, and sports bra.
Mizuki didn't scream. She watched my ejaculation in a daze, her hand still
on my penis, aiding the ejaculation with a rubbing motion.
After a while, when all the semen was expelled, Mizuki's face was covered
in cum. Her clothes and body were also plastered with the white fluid.
"...What should I do about this?"
I thought she would scream, but her first words were a simple question.
I called Mizuki's name as she looked down at herself in despair.
"Mizuki."
"Yes...?"
Her voice trembled in fear, wondering if there was more to come.
I placed my hand on Mizuki's head and gently stroked it.
"You did well. It felt great."
I praised her aloud for her recent effort.
"..."
Mizuki remained silent. She just averted her gaze, looking troubled, with
semen still stuck to her face.
However, the fact that she didn't try to brush away the hand I was using to
stroke her head could be considered today's success.
◆◆◆
Three days later.
"Ah♡ Ah♡ Ah♡ Nngh♡ Kasuga-kun♡ Kasuga-kun♡♡"
After finishing my run with Mizuki, I brought Karen into my home
bathroom to enjoy some s*x.
Karen had her hands on the edge of the bathtub, her butt sticking out as I
thrust my meat stick into her slit from behind.
The lewd sounds of our piston-like movements echoed. Her soft buttocks
jiggled with each thrust, her anus peeking out between them. Each time I
pushed my penis in, her large breasts bounced in front of me, and the tight
folds inside her squeezed my meat stick, urging me to ejaculate.
No matter how many times I experienced it, this pleasure never got old.
Her moans were music to my ears. Sweating from the morning run with
Mizuki, I now washed it away with a morning bath s*x session with Karen,
a routine that had become part of my daily life over the past few days.
Judging by the uninterrupted sweet moans Karen had been letting out, it
seemed she had fully embraced this routine as well.
Eventually, Mizuki, too, would be trained to scream with pleasure from my
penis just like Karen. Thinking about Mizuki this morning made me
chuckle.
Today marked the fourth day since I started the early morning runs with
Mizuki. On the first day, Mizuki managed to make me ejaculate but she
failed to extract any semen from me in the following three days.
Here's a brief recap of what happened during that time.
On the second day, Mizuki was more proactive with her handjob compared
to the first day. She probably wanted to avoid exposing her underwear and
body like she did on the first day. Her shame outweighed her hatred for me.
Well, it's only natural to be reluctant to expose yourself in a public park
where anyone could come by at any moment.
Mizuki likely thought she could avoid embarrassing herself by making me
ejaculate with just her hand.
However, her handjob technique hadn't improved much from the previous
day and she failed to make me climax.
On the third day, Mizuki continued to focus on the handjob but, realising
that I wasn't showing any signs of coming, reluctantly removed her
tracksuit and running shirt, revealing a navy sports bra.
Her face turned bright red with embarrassment but she seemed confident
that I would ejaculate.
On the first day, I had ejaculated as soon as Mizuki showed her bra. She
probably thought this was a surefire tactic.
However, I didn't ejaculate that day either.
The impact of the initial surprise on the first day had faded, leaving just an
unsexy sports bra.
If Mizuki had gone further, like removing her bra to show her nipples or
squeezing her breasts over the bra, it might have worked. But just showing
her bra and expecting me to ejaculate was not enough.
Mizuki was shocked and confused that I didn't ejaculate even after showing
her underwear but time was up for the day. She couldn't make me ejaculate
for two consecutive days.
This, of course, increased Karen's burden, as I repeatedly told her. Mizuki's
face showed clear anxiety as we left that day.
And then, the fourth day. Just this morning.
I ran with Mizuki as usual and returned home without stopping by the usual
rest hut.
Mizuki kept looking at me as if she had something to say after the run but I
completely ignored her. Perhaps Mizuki had prepared something special for
today, but I didn't give her the chance to execute it.
I'm already looking forward to seeing how Mizuki reacts tomorrow
morning.
Thinking about this, I shifted my focus back to Karen.
Each time I slammed my hips against her buttocks, Karen's dazzlingly
white back arched, and her fruit-like breasts jiggled. I released my hold on
her waist, grabbing her bouncing mounds roughly from behind as water
droplets scattered around.
I squeezed my fingers into her breasts firmly.
"Aaahhhhhh!♡♡♡"
Her voice, strained yet sweet and melting, echoed through the bathroom.
Whether intentionally or not, Karen tightened her inner walls around my
penis and wiggled her butt from side to side. It looked like she was trying to
escape from me, or perhaps she was begging for more pleasure.
While kneading her breasts, I flicked the pink tips of her nipples with my
fingernail.
"Hauu♡♡"
Once again, Karen's cute moans tickled my ears.
In a gentle tone, I asked my childhood friend, "Does it feel good, Karen?"
Karen twisted her upper body to look back at me, her eyebrows knitted in
distress as she nodded slightly.
"Y-Yes... it feels good...♡"
"I see. Then how about this?"
I pinched her nipple between my index and middle fingers and rubbed it.
Karen arched her back in response to the overwhelming pleasure, letting out
a high-pitched moan.
"Aaahhhh!♡ It's amazing!♡ Amazing!♡ Oh, Kasuga-kun!♡ More!♡ Rub
it more!♡"
It was rare for Karen to request caresses herself. To fulfil my cute s*x
friend's wish, I increased the pace of rubbing her nipples. Of course, I
didn't forget to continue stirring her insides with my penis.
Karen shook her head left and right, climbing the slope of pleasure towards
climax.
"Ah! Ah! Ah! Ah! Ah! No! I can't! Kasuga-kun, I'm going to come! I'm
coming! I'm comiiinnngggg!♡♡♡"
Unable to withstand the continuous pleasure, Karen screamed as she
reached her climax.
Lately, Karen had been dutifully reporting her orgasms to me without
needing to be prompted. It must have been because I had continuously told
her to report when she was coming.
With her scream of [I'm coming], her inner walls clamped down on my
penis, squeezing it tightly. Even after countless experiences, this pleasure
never got old. Squinting with pleasure, I pinched her nipples harder.
Immediately after,
"Ohhhhhh!♡♡♡♡"
Unable to withstand the unexpected intense stimulation, Karen let out an
obscene moan as she climaxed again.
Following her intense contractions, I released my semen inside her. Feeling
my ejaculation through the condom, Karen's back trembled with spasms.
I looked down at Karen as she shivered, letting out a deep breath.
After pulling out my penis from Karen's vagina, I sat down on the bath mat
to savour the afterglow of my climax. Similarly, Karen, also seated on the
bath mat, reached out for my penis with a flushed face.
Carefully removing the condom, Karen buried her face in my lap, gently
kissing my semen-covered penis.
"Mmm... chuu♡ chuu♡ chuuuu♡ churu♡ lero♡ lero♡"
After repeating the kisses several times, Karen began licking the semen off
my glans and shaft.
I patted her head, praising her for starting an [after-s*x blowjob] without
being told. In response, Karen opened her mouth wide and took my penis
in.
"Churu♡ chupu♡ jupo♡ jupo♡ chuuu♡♡"
She stroked the shaft with her lips while licking the glans with her tongue,
sucking up the remaining semen from the urethra with a slurping sound. It
was a far cry from her awkward first blowjob.
"Puhaa! Haa... haa... K-Kasuga-kun, your penis is so hard today too. And
it's so hot, I feel like I might get burned, and the semen is so thick...♡"
With a face flushed with heat, Karen praised my genitals.
Since our hotel s*x session—or perhaps since I started running with Mizuki
in the early mornings—Karen had been serving me more diligently than
ever. Her words of praise were part of that.
I hadn't ordered her to do this. She was probably trying to draw my
attention to protect Mizuki by appealing to me on her own.
"Karen."
"...ah..."
I called her name, lifting her chin to make her look up at me.
Karen's eyes were glazed over with a lustful haze, seemingly intoxicated by
the scent rising from my crotch.
Feeling an intense surge of arousal at her appearance, I grabbed my
childhood friend's arm and pulled her close. Without hesitation, I pressed
my lips against the ones that had just been on my penis.
"Ah... nn♡ Chu♡ Chu♡ Chuuu♡♡ Lero♡ Lero♡ Nn, Kasuga-kun...♡"
"Mm, chu... Swallow it, Karen."
As I entwined my tongue with hers and let my saliva flow into her mouth,
Karen gulped it down without hesitation.
After she finished swallowing, I demanded the same from her.
"You too, Karen."
Blushing, Karen hesitated briefly but then let her saliva flow into my
mouth.
I savoured her saliva and then resumed our deep kiss.
We entwined our tongues persistently, pausing only when we needed to
catch our breath before diving back into the kiss.
After several more rounds, Karen suddenly seemed to remember something
and pulled away.
"...Ah! I-I have something I want to talk to you about, Kasuga-kun!"
"Talk? What is it?"
Holding Karen's body close, I asked, and she looked troubled.
"Last night, my dad suggested that our family go out for dinner next
Monday. And..."
Monday was the day the football team had no practice. It was also the day I
had promised Karen we'd go to a hotel and have s*x without a condom.
Her father had apparently made plans without knowing this.
Imagining her father's face, I let out a small sigh. Of all days, he had to pick
Monday.
But with Karen being the football team manager and busy on weekends, it
made sense for the family outing to fall on her day off from club activities.
"I understand. We'll reschedule our raw s*x for another day."
Karen's face relaxed with relief at my words.
"Thank you. I'm sorry, even though you had prior plans. My dad booked
the restaurant without checking with me. My mom said I could prioritise
my other plans, but..."
"If you turned it down, your dad would probably be so shocked he'd be
bedridden."
I chuckled, recalling how much her father doted on her.
Honestly, I was disappointed about the delay. But I didn't want to interfere
with her family time.
It wasn't out of guilt or anything like that.
So far, Karen had been obedient to me. Still, she must have her own
feelings about everything. Interrupting her family time and planting
unnecessary resentment would be foolish.
—Besides, if Karen wasn't available, I could always go to the hotel with
my other s*x friend.
With that thought, I told Karen,
"I'm not so tactless as to disrupt family time. Go and enjoy yourself. But
—"
I moved my hand from her back to her butt, kneading her soft flesh
lasciviously.
Karen's body shuddered as I whispered into her ear, lightly nibbling on her
earlobe.
"Be prepared for some intense s*x to make up for the delay, okay?"
"A... y-yes♡"
Karen nodded, her face bright red. Satisfied with her response, I kissed my
childhood friend's pink lips once more.
◆◆◆
The next day, after having that conversation with Karen, I woke up at 4:30
AM, excitedly heading to the forest park.
I didn't feel the slightest bit of sleepiness. I was eager to see how Mizuki's
attitude would change, if at all, after yesterday's events.
There was also a possibility that she might not show up at our meeting spot.
But when I arrived at the park entrance, there she was, dressed in her usual
tracksuit.
Mizuki noticed me and approached with a somewhat tense expression.
"Good morning"
She said, bowing her head.
I was taken aback. This was the first time Mizuki had greeted me first and
even bowed her head.
I had anticipated some degree of submission given the previous day's
events, but this was unexpected. Perhaps yesterday's incident had shocked
her more than I thought.
Pondering this, I returned the greeting and began running along the park's
perimeter. Mizuki silently followed me but when I headed towards our
usual rest hut, she visibly relaxed.
She must have been anxious, thinking today might end with just a run
again.
As we reached the rest hut, finding it empty as usual, we stood facing each
other.
I watched with interest to see what Mizuki had planned for today. She had a
determined expression, as if she were jumping off a stage, and began
quickly undressing from her tracksuit. Not just the top, but the bottom as
well.
Beneath her tracksuit wasn't a typical running shirt and shorts, but the
separate-type uniform of the track team. It was the same uniform Mizuki
wore in the photos Karen had sent me.
Completely caught off guard, I stared at Mizuki's face. I never expected her
to wear her precious uniform just to make me ejaculate.
The track girl I had seen in the photos now stood before me, here to make
me cum.
The thought alone made my crotch swell rapidly.
Mizuki noticed the change, and seeing my arousal at her uniform, she
looked both angry and troubled.
Yet, steeling herself, she knelt before me and, after a brief apology, pulled
down my underwear.
"—"
When my hardened penis sprang out, Mizuki gasped but didn't scream or
look away. Instead, she placed her hand on my penis, ready to continue with
the handjob.
However, today's Mizuki was different. She had an extra element beyond
the usual handjob.
"It's... so hard, so warm..."
Mizuki muttered timidly, her hand trembling.
Previously, she had unintentionally voiced her thoughts, but today she was
speaking for my benefit.
"And it's hot... smelly... ah, this part is soft. Uuu, the veins are bulging and
twitching... doesn't this hurt?"
She touched the glans, traced the ridge, and stroked the shaft, glancing up at
me to gauge my reaction.
This was no longer a casual handjob. Mizuki knew what would make me
feel good and was intentionally stimulating me.
Whether she learned from the internet, magazines, or real-life friends, today
Mizuki's service was exceptionally pleasurable.
The racing bloomers with white lines on a black background wiggled before
my eyes. It wasn't the handjob causing this; she was probably mortified.
Still, Mizuki didn't stop her service.
"Ah, clear fluid is coming out from the tip... this must be pre-cum, right? I
heard from a friend that it comes out when a man is aroused."
She continued stroking with her right hand while mentioning pre-cum.
Then, she used her left hand to gently massage my balls. This was a move
my childhood friend often used right before ejaculation.
"Uuuu, the smell is getting stronger... is it coming? Please, release it.
And... put it on me... p-please... aah?!"
With Mizuki's clumsy but earnest s*x technique in her uniform, I ejaculated
embarrassingly quickly.
As she wished—or rather, as she had been told by her friend that it would
excite me—I sprayed my semen all over Mizuki's face.
As I watched my junior's face become covered in semen, I waited for the
urges of ejaculation to subside, then let out a satisfied sigh.
"Mizuki, you did well."
I patted her head, and she murmured a barely audible [Thank you]. This
was likely something her friend—let's be honest, it was Karen—had told
her to say when praised by me.
Acknowledging Karen's assistance internally, I continued.
"So, I need you to do it again. This time, use this."
With that, I reached for Mizuki's crotch, sliding my hand over her slit
through the fabric of her bloomers.
"Ah!"
Mizuki gasped in shock, her face still smeared with semen.
I lay on my back on the bench and instructed her from that position.
"Straddle me and use where I just touched to rub my cock."
"But..."
"I'm not asking you to undress. You can keep the bloomers on. You'd want
to report to your helpful friend that you did it properly, right?"
Mentioning Karen seemed to have an effect. Mizuki hesitated for a moment
before nodding slightly. She wiped her face with the towel she brought and,
moving slowly, straddled me.
My penis remained erect despite just ejaculating. Mizuki, looking like she
might cry, pressed the fabric of her bloomers against my shaft.
I spoke, my voice thick with excitement.
"Good. Now, move your hips to rub my cock."
"Okay..."
Reluctantly, she began to move her hips slowly.
I enjoyed the view from below, relishing the sensation of her grinding
against me through the bloomers. At this rate, I thought, I could come at
least two more times, a smirk forming on my lips.
To cut a long story short, I ejaculated three times, thoroughly soaking
Mizuki's precious uniform with my semen.
Interlude: Mizuki Kujo 1
After finishing her early morning run with Kasuga and returning home,
Mizuki headed straight for the bathroom without looking around once she
opened the front door.
This was to wash off the sweat from running and to cleanse the scent left by
Kasuga.
Stripping off her clothes like she was tearing them off in the bathroom,
Mizuki didn't put her workout clothes in the laundry basket but took them
with her into the bathroom.
"It's sticky... and it smells terrible... This won't come out with a regular
wash, will it?"
Mizuki muttered in a pitiful voice.
The bloomers soaked with sweat and semen emitted a strong stench, and
though not as bad, the tops were also in a terrible state. Naturally, the
tracksuit worn over them was also tainted with the scent.
If she threw such items into the laundry basket, her family would
undoubtedly notice. With teary eyes, Mizuki began washing them in the
bathroom.
As she scrubbed off the semen's lingering scent from the uniform, Mizuki
diligently, meticulously and obsessively cleaned it, as if believing that she
could wash away not just the stains but also the memories.
When the sticky feeling clung to her hands during the washing, Mizuki
couldn't hold back her tears anymore.
"What am I doing..."
She had taken her precious uniform to excite Kasuga, rubbing her crotch
against his genitals to induce ejaculation.
Just a few minutes ago, Mizuki had been gyrating her hips lewdly on top of
Kasuga. In the middle of a park, where anyone could come at any moment.
Thinking about it made Mizuki's whole body feel like it was on fire. She
was overwhelmed with shame and felt like she might faint.
"It was something I had to do. If I didn't satisfy him, Karen-san would
suffer terribly."
Mizuki muttered to herself, as if to convince herself.
Yes, it was unavoidable. Karen was forced to have s*x to protect Mizuki
and her siblings. To lessen Karen's burden, Mizuki also became a s*x
partner.
Given that, she had to accept flattering Kasuga in her uniform and serving
him sexually outdoors. Compared to Karen, who was dragged into a hotel
and toyed with, what Mizuki did today was nothing.
Moreover, her shameful attempt to flatter Kasuga paid off.
"『You did well, it felt good. I'll promise not to touch Karen today in
recognition of your effort.』"
After the fourth ejaculation, Kasuga said this while patting Mizuki's head,
who was in a daze.
Until yesterday, Mizuki had failed to make Kasuga ejaculate for three
consecutive days. It was easy to imagine that Kasuga's unrelieved sexual
desire was directed at Karen.
In that sense, Mizuki finally fulfilled her role of [shouldering Karen's
burden] today. That alone should be something to be proud of, even if what
she did was just using her body to make a man ejaculate.
Wiping her tears, Mizuki told herself that.
"I have to thank Karen-san."
As she said this, she recalled the phone call from Karen last night.
The call came just as bedtime approached.
"『Good evening, Mizuki -chan. Can we talk now?』"
Karen's voice over the phone had a concerned tone.
Whether she heard from Kasuga or sensed it from his demeanour, Karen
knew that Mizuki hadn't been satisfying Kasuga for days.
Apologising for that, Mizuki was told by Karen that she could quit being a
s*x partner.
"『I'll somehow plead with Kasuga-kun, okay?』"
"『But then Karen-san will...!』"
"『You have to worry about yourself more than me. Despite how I look,
I'm pretty sturdy and, well, I know about men, so I'm prepared. But
Mizuho-chan, you're different, right?』"
Implicitly pointing out Mizuki's lack of sexual experience, she was at a loss
for words.
She couldn't deny it. In reality, Mizuki's lack of experience and skill made
it impossible for her to satisfy Kasuga and on the day of the call, she hadn't
even been demanded for service.
Mizuho thought that Kasuga might have given up on her as a casual s*x
partner.
Of course, she wasn't shocked by the fact that Kasuga had given up on her.
She didn't become his casual s*x partner by choice. If she didn't have to
deal with Kasuga anymore, she would feel nothing but relief.
However,
"『You called me a coward and other names, but the real coward is you,
Mizuki Kujo.』"
Those words Kasuga once said echoed in her mind.
While she became his casual s*x partner to lessen Karen's burden, she was
relieved that Kasuga gave up on her because she couldn't satisfy him. How
did that appear to others?
She must look like a hypocrite who just wanted an excuse.
[I've done everything I could. But Kasuga didn't accept me. So, it's
inevitable that Karen has to deal with him now.] That was the excuse.
Realising this, she couldn't agree to Karen's proposal.
It was only natural that Mizuki, who wasn't satisfying Kasuga, sought
advice from Karen.
[How can I satisfy Kasuga?] Karen repeatedly tried to dissuade Mizuki
from asking this question, but knowing Mizuki's firm resolve, she
reluctantly taught her various techniques.
Wearing the track and field uniform and seducing Kasuga with her voice
were both techniques taught by Karen.
These techniques worked wonders, and today, Mizuki made Kasuga
ejaculate four times. Despite not being able to make him ejaculate even
once since the first day, she achieved it four times in just one day.
Mizuki felt a slight sense of accomplishment from this. Of course, she
didn't have any affection for Kasuga. The feelings she had for him were the
exact opposite.
Even if it's someone you despise, being treated like a worthless stone by
others hurts your self-esteem.
Especially for Mizuki, who had been praised but never scorned by the
opposite s*x until now. Kasuga had repeatedly said to her face, [You're far
inferior to Karen] and though he demanded sexual service, he never went
beyond that.
[Why should I willingly embrace you when I can have Karen?]—he had
implicitly conveyed that.
Even when it came to sexual service, she was treated roughly, as if to say
she wasn't enough, and yesterday, he didn't even demand her service.
This fact wounded Mizuki's heart to some extent.
But today, she managed to make Kasuga ejaculate four times. Regardless of
the morality of the act, it was inevitable that a small sense of satisfaction
would arise in Mizuki's heart.
Suddenly, Karen's words from the other night came to mind.
"『Lastly... be careful with Kasuga-kun.』"
"『Be careful? Of course. Though it feels too late...』"
"『No, that's not what I mean. Kasuga-kun is very skilled at handling girls.
Things that should've been done reluctantly turn into something different
without you noticing.』"
Karen said.
She had experienced many lewd things with Kasuga. But no matter what
happened, she had no choice but to comply because he held a weak point
over her.
Eventually, her body adapted to Kasuga's actions. Even if her heart rejected
it, her body began to feel pleasure.
It's inevitable since a girl's body is made that way, but Kasuga was
astonishingly skilled at amplifying this pleasure. Karen said that she found
herself enjoying actions that were supposed to be done out of necessity.
"『The service I taught you was the same. At first, I did it reluctantly. I had
to make Kasuga-kun ejaculate, so I tried various things. Then Kasuga-kun
would pick up on it and praise or pat my head... Before I knew it, the
service I hated wasn't that bad anymore. I justified it by saying it was
inevitable, while I was sucking Kasuga-kun's dick.』"
"『Karen-san...』"
Hearing such vulgar words as 『sucking his dick』 from Karen's mouth
made Mizuho tremble.
[I've fallen this far because of Kasuga-kun]—she realised that Karen was
warning her about this.
Karen then said to Mizuho in a serious tone.
"『Mizuki-chan, you can still go back now. But if you keep practising what
I taught and continue being Kasuga-kun's casual s*x partner, you'll soon
become like me. So, please think carefully and decide. I've said it many
times, but don't worry about me.』"
Mizuki suddenly recalls Karen's warning.
Despite disliking Kasuga, she feels a small sense of satisfaction having
made him ejaculate four times. Perhaps she is becoming exactly what Karen
had warned about.
If she continues being Kasuga's s*x friend, will she eventually become a
woman who willingly buries her face in his crotch? She hugs herself at the
thought.
Now, Mizuki feels deeply afraid of Kasuga.
But no matter how terrified she is, she cannot run away. She can't abandon
Karen, who had been so considerate towards her. Above all—
"『If you had made me ejaculate, at least once Karen's burden would have
been reduced, but it's useless to tell you that."
"『Watch Karen cum until the end. That's your responsibility.』"
"『You called me a coward, but the real coward is you, Mizuki Kujo.』"
All the words exchanged with Kasuga left Mizuki with no choice but to
stay...
—
The next day. After finishing his run, Kasuga spoke decisively to Mizuki.
"Mizuki, keep next Monday free. We're going to a hotel."
"...What?"
Mizuki is dumbfounded at the sudden mention of going to a hotel.
Kasuga continues, unconcerned, as if it's nothing.
"I'm saying we're going to have s*x. You've ever been preparing by taking
pills. You were ready for this, weren't you?"
"That, is..."
"I'm sure the track team has a day off on Monday, right? There shouldn't be
any problem. Or do you have some unmissable engagement?"
Questioned, Mizuki almost nods. If she says she has something important,
maybe the plan can be postponed.
But she knows such a flimsy lie won't work on Kasuga. Under his piercing
gaze, she shakes her head weakly.
"...No, I don't have any plans."
"Then it's settled."
With that, she nods weakly this time.
Unable to believe how easily her fate was decided, Mizuki bites her lip in
disbelief.
Then, Kasuga pulls her body close and forcibly seats her on his lap.
"Ah, um!?"
Mizuki raises her voice in a panic.
She's now sitting on Kasuga's lap on the bench, facing away from him. It
might be a heartwarming sight if it were a child sitting on their father's lap,
but Mizuki and Kasuga are obviously not parent and child.
Kasuga's hands start to move. His right hand caresses her crotch over her
shorts, and his left hand grabs her breast over her top.
Until now, Kasuga had only let Mizuki serve him; he had never touched her
body himself. Surprised by the sudden action, Mizuki involuntarily
screams.
"Hiya!? Wh-what are you...?"
"We've decided to have s*x, so we need to get your body ready. Ah, just to
confirm, you are a virgin, right?"
"..."
"Judging by that reaction, I'm correct. Have you ever masturbated?"
As Mizuki remains silent, Kasuga brings his mouth to her ear from behind
and asks again forcefully.
"Answer me."
"――! Y-yes... just occasionally..."
"How do you do it?"
"W-with the shower... spraying water on my...."
Mizuki answers in a faint voice.
She despises men who look at her with lust and she has strong negative
feelings towards sexual acts like masturbation.
Even so, there are times when her sexual desire becomes uncontrollable. At
those times, she uses the shower to stimulate her crotch and wait for the
desire to subside.
"Hmm, so you're a clitoral stimulation type."
Muttering such things, Kasuga resumes caressing Mizuki. Held tightly from
behind, Mizuki can only surrender to Kasuga's movements.
Mizuki's body, unaccustomed to pleasure, doesn't respond to light touches.
However, persistent caresses on sensitive areas like her nipples and clitoris
inevitably increase the pleasure.
"I'm going to touch you directly."
With these words, Kasuga slips his hand into Mizuki's shorts.
Mizuki instinctively tries to escape Kasuga's hand, but being held from
behind, she can't move. As a result, she ends up pressing her bottom against
Kasuga.
"No! No, please stop... hya!?"
Rough male fingers explore her genitals. The unfamiliar sensation instantly
gives her goosebumps.
However, Kasuga's movements aren't as rough as she feared. Instead, he
gently caresses around her clitoris.
Mizuki doesn't realise this is to expose her clitoris from its hood. Without
understanding, she feels the pleasure increasing, making her shiver with an
unknown anticipation.
"No, please stop! I'm scared, I'm so scared! Ah, brother, help—ahh♡"
Mizuki's voice, trying to escape the caresses, suddenly turns sweet.
She herself notices this change and is shocked by her own voice.
"Wh-what was that... hya♡ Wait, stop, don't touch there—fuhn♡"
"The clitoral hood is off. Does it feel good?"
"N-no... it doesn't feel good, please stop... hyaah♡ No, don't pinch it♡
Ugh, kuh♡ Ah, stop rubbing it with your fingers, please♡"
No matter how much Mizuki pleads, Kasuga's fingers do not stop.
It's not just her clitoris. His left hand has also slipped inside her top,
pushing up her sweat-drenched sports bra to massage her nipples.
Moreover, Kasuga's tongue invades her ear.
Mizuki's body twitches involuntarily.
Gradually, a sense of climax begins to build from her lower abdomen. It's
similar to when she stimulates herself with the shower, but much more
intense, slowly crawling up her spine.
Mizuki has no way to stop it.
"Ahh♡ Haah♡ Haah♡ Ahh, it's coming♡ Something's coming♡"
"Good. Let it come. And when it does, make sure to say you're coming.
Come on, come on!"
"Ahh♡ No♡ It's strong♡ It's too strong♡ Ahh, I don't know♡ I don't
know this feeling♡"
Mizuki's voice becomes increasingly desperate. Shaking her hair, she
moans in pleasure, swaying her hips lewdly.
And then—
"Ahh♡ Ahh♡ I'm coming♡ I'm coming♡ I'm cominggggg!♡♡♡"
Mizuki forgets they are outside and announces her climax loudly,
succumbing to the pleasure.
Simultaneously, Mizuki's body convulses, and warm fluid gushes from her
slit.
Kasuga's hand is soon covered in her fluids, and her underwear and shorts
are soaked.
As the wave of unprecedented pleasure passes, Mizuki goes limp on
Kasuga's lap.
"Haah... haah... what was that...?"
Mizuki mutters in a daze.
Kasuga starts caressing her body again.
"Eh... eh?"
Confused, Mizuki makes a bewildered sound.
Smiling where she can't see, Kasuga speaks as if it's nothing.
"You made me cum four times yesterday. So today, I'll make you cum the
same number of times."
With that, Kasuga starts playing with her clitoris and nipples again.
Mizuki instinctively tries to escape, but being held tightly from behind, and
exhausted from the climax, she has no strength left.
All she can do is tremble on Kasuga's lap, letting out helpless moans.
Chapter 5.2: Sakura Karen 3
That morning, Karen read the message on her smartphone and muttered in
disappointment.
"Don't come today... This is because Mizuki-chan did her best, right?"
The message was from Kasuga, informing her that their early morning s*x
was cancelled.
Ever since becoming Kasuga's s*x friend, Karen had been called upon
every morning to engage in lewd acts. It was the first time Kasuga had
cancelled it.
Mizuki must have satisfied Kasuga with her service after their run.
That fact pained Karen's heart.
It was guilt for burdening Mizuki, her junior, with taking care of Kasuga.
Karen regretted giving her advice. Even though Mizuki had wanted it,
Karen teaching her how to please Kasuga likely made him favour Mizuki.
Otherwise, Kasuga, who relished Karen's body every day, wouldn't have
messaged, [Don't come today].
Karen assessed that there was a high possibility that Mizuki would take
over the role of s*x friend.
After all, Mizuki was an attractive girl even from Karen's perspective as a
fellow girl.
With a well-proportioned appearance and lustrous black hair, she could
become a model immediately. Serious and hardworking by nature, she
might seem a bit uptight but showed a playful side once you got close.
Karen envied Mizuki's good points, especially her figure.
Mizuki's athletic body was sharp and toned without losing feminine
softness. Although Karen was mindful of her own figure, compared to
Mizuki's slender build, Karen's body had too much flesh centred around her
chest.
For Karen, her overly large chest caused shoulder pain, limited her choice
of underwear, and drew unwanted stares from boys. There was nothing
good about it. Feeling self-conscious about her body, it was only natural
that Karen admired Mizuki's slender and supple figure.
If she, as a girl, felt that way, it wasn't surprising that Kasuga would want to
hold Mizuki over her. The moment she thought this, Karen's chest ached
again.
This time, the pain wasn't from guilt towards her junior. It was anxiety over
Kasuga's attention being directed at another girl.
[It's a strange story] Karen thought. The attention of the one who threatened
her was now directed elsewhere. Apart from the guilt towards Mizuki, she
should feel joy, not anxiety. Yet, Karen feared Kasuga's eyes looking at
someone other than her.
Kasuga's words once crossed Karen's mind.
"『Whether you become a s*x friend or not, Karen will always be my s*x
friend.』"
"『No one of your level can replace Karen.』"
"『Karen is my woman. I'm not going to trade her for anyone else.』"
These were words Kasuga directed at Mizuki when they first met. Karen
didn't believe they came from his heart. It was probably a tactic to make
Mizuki his s*x friend.
But Karen felt happy hearing those words. Compared to Mizuki, whom she
inwardly thought she couldn't beat as a girl, she was rated far more
attractive by Kasuga, which moved her heart.
That was when Karen became clearly aware of her change. She realised that
her relationship, which she had complied with under duress, was changing
within her.
Since then, Karen had tried not to think about it as much as possible. She
followed Kasuga's orders because he had a hold on her, and having s*x
with Kasuga was for the same reason.
But that excuse was nearing its limit. Being told [Don't come] by Kasuga
had shocked her so much. She could no longer ignore this fact.
However, after recognizing her change and thinking about what to do next,
Karen couldn't come up with an answer.
No, to be precise, she knew. Kasuga's wish was for Karen to be his s*x
friend, so she should serve Kasuga more as his s*x friend. That would
please Kasuga and probably draw back his attention from Mizuki.
However, if she served Kasuga by her own will, it would be a betrayal to
Kujo, her boyfriend. That was what made Karen hesitate.
It was undeniable that she was drawn to Kasuga, but that didn't mean she
disliked Kujo. She didn't want to end the three years she spent as Kujo's
girlfriend in betrayal.
She didn't know what to do about it. But she knew she couldn't stay as she
was.
Karen sighed deeply on her bed, overwhelmed by her confused thoughts.
—
"Good morning, Karen."
That day, Karen, who went to the soccer club's morning practice with a
more gloomy face than usual, was greeted by Kujo, who made her quickly
put on a smile.
"Good morning, Makoto-kun."
"You seem a bit off today, are you okay?"
Kujo, noticing Karen's change, asked with concern.
Karen's next smile wasn't something she consciously made.
"Thank you for worrying. I'm fine."
"I see. That's good, but don't push yourself. Also, about this Monday, you
remember you're coming to my place, right?"
"...Eh?"
Karen, happy that her boyfriend was looking out for her, tilted her head in
confusion at Kujo's words.
"This Monday? I have plans to go out with my family... I didn't make any
promises to you, right?"
When she answered, Kujo's expression turned puzzled.
"Promises...I invited you last week, didn't I? You declined because you had
plans with your mom. I thought we were good for this week."
"Well... I'm sorry about last week, but my dad already made a reservation
at a restaurant for Monday, so I can't cancel."
Karen responded apologetically.
Hearing this, Kujo's voice grew sharper in displeasure.
"You had plans with your mom last week and now with your dad this week?
I gave up last week, so shouldn't you prioritise me this week?"
From Kujo's perspective, being turned down last week made him think
Karen would make plans with him for the next holiday.
With the inter-high qualifiers approaching, their practice had become even
more intense.
To be frank, Kujo was feeling pent up. Having been turned down last week,
he was really looking forward to this week.
And yet, Karen was once again prioritising her family over his invitation.
He felt that she could have dinner with her family anytime and his voice
reflected this frustration.
Hearing her boyfriend's words, Karen's eyebrows twitched slightly.
Karen felt sorry about last week. The [plans with her mom] excuse was a
complete lie to cover up going to a love hotel with Kasuga.
Feeling guilty about it, she had complied with Kujo's request to give him a
breast massage as compensation for turning him down.
But she swore that Kujo hadn't mentioned anything about the next week's
plans, either during or after the breast massage. Yet Kujo was acting as if
she had broken a promise, which made Karen quietly but clearly irritated.
After all, it was Kujo's actions that had forced Karen to lie in the first place.
She was covering up for her boyfriend's mess, so why was she being
blamed?
Karen reflexively thought this and immediately retorted to Kujo.
"Unless we had a prior promise, don't interfere with my time with my
family!"
Her words were unexpectedly cold and sharp, even to herself. She had
never spoken to her boyfriend in such a tone before.
Kujo looked taken aback. Realising the severity of the situation, he
scratched his head and laughed awkwardly.
"Well, I guess you're right! Sorry, I just had to ask."
"...Okay. Then, can we end this conversation here? I need to start preparing
for morning practice."
Karen turned her gaze away from Kujo and left.
Kujo opened his mouth to say something to his girlfriend's back but no
words came out.