Her madness, her twisted possessiveness, and her sick, obsessive love, everything about her made my heart pound violently inside my chest.
Am I insane?
I don't know…
All I knew was that I wanted her again. Needed her. That sick urge to merge with her body and mind, pour every depraved, broken feeling into her and make her mine again, like only I could.
So, I pushed her face-down onto the bed once more, this time pressing her down with her back to me.
I lined up my cock and rammed it into her pussy all over again.
My spoiled cum was still inside her from before, dripping out of her pink, tight hole, leaking down her thighs and staining the sheets.
She yelped in surprise, breath catching. "Brother…"
"Manaka…" I growled, my voice thick with lust.
I couldn't get enough of the way her pussy gripped me, so warm, so tight, squeezing me like it never wanted to let me go.
My hips moved on their own and kept pounding into her from behind, my cock sliding in and out of her drenched cunt, each thrust making wet, obscene noises.
Her face was pressed into the pillow, her voice muffled as she moaned uncontrollably.
She trembled beneath me, body shaking with every hard thrust, crazily accepting my brutal, relentless love.
She moved in rhythm with me, pushing back against my hips, wanting me deeper, faster.
My earlier load kept leaking out around my cock with every thrust, spilling onto her thighs, her skin, and staining the sheets below.
And then, like she could read my thoughts, she turned her face toward me, looked up with those deranged, loving eyes and opened her mouth. I pulled out and stroked myself fast.
Thick strands of cum shot across her face. Her cheeks, her lips, her tongue, all painted white with my release.
She giggled softly, lovingly, and kissed the tip of my cock, then ran her tongue around the head, licking up every drop of the mess I left.
"I hope that helps, brother," she whispered sweetly.
"It does," I chuckled darkly.
"But I want more, sister." I slapped her ass, making her jolt. "Get on all fours. I'm not done with you."
"Yes, brother," Manaka purred, instantly shifting onto all fours without even a moment of hesitation, presenting her ass to me like a gift.
And with that, we lost track of time completely, fucking for another two hours without a single break.
There wasn't a single position we didn't try, doggystyle, reverse cowgirl, missionary, standing up while I slammed into her, her legs wrapped around my waist as I pinned her to the wall.
I let her ride me until her thighs shook, then flipped her over and fucked her until my balls tightened and I pumped another load into her again and again.
My cum covered everything, her face, her pussy, her stomach, her tits.
The room reeked of sex, heavy and musky, mingled with sweat and my possessive scent.
Her ass was bright red from my handprints, stinging with every spank I delivered as I pounded into her from behind.
I didn't know how many times we both came, over and over, screaming each other's names until our voices were hoarse.
We didn't give a single fuck about school, or breakfast, or even showering. We just kept fucking, bodies locked together, lost in each other.
It wasn't until a sharp knock rattled the door that we finally paused, both of us panting and drenched in sweat.
Manaka's face twisted in pure annoyance. She shot a murderous glare toward the door, then dove under the blankets, wrapping herself up, not because she was embarrassed, but because she knew how possessive I was.
I couldn't stand the thought of anyone else seeing my girls naked, not even for a second.
So I scowled, wiped some stray cum off my abs, and dragged on my clothes, while Manaka curled up, hidden beneath the covers.
Then I walked toward the door, ready to see who was interrupting us.
And I opened it.
When I saw her, well, I recognized her right away. She was my other sister, Ayaka Sajyou.
She spoke calmly, her voice as gentle as ever. "Brother, Father wanted me to tell you and Sister that the Holy Grail War has begun. So, you don't need to go to school. He also forbade me from going."
"Okay, thanks, Ayaka," I said, praising her while stroking her hair lovingly, just like any older brother petting his younger sister.
Digging into my pocket, I pulled out some cash and pressed it into her hand. "Here, take this. Go treat yourself to something nice outside and have fun."
She smiled brightly, like any normal girl who's just been given pocket money, and replied happily, "Yes, Brother. Thank you."
With that, she turned and left, practically skipping away as I closed the door behind her.
If she had appeared in front of Manaka right now, I knew her fate wouldn't have been good.
As much as I didn't see her the same way I saw Manaka, she was still my sister.
It was impossible for me to let her suffer because of a small incident.
I wasn't that petty.
But Manaka… that was a different story altogether.
I turned back inside my room, a smirk curling on my lips. "Father and Ayaka won't be home for a while, Sister."
Manaka's eyes lit up instantly, shining with a wicked joy at the news I'd brought her.
"Brother…" She gazed at me, her eyes full of expectation and lust.
"Let's do it outside this time, Manaka," I growled, my voice low and possessive. "I want to fuck you all over again… spread our scent in every corner of this house."
I grabbed her hand roughly and dragged her out with me.
She didn't resist at all, letting me pull her wherever I wanted, her body already trembling in anticipation.
When we reached the garden, I spun her around and shoved her back against one of the stone pillars.
Without wasting another second, I lined my cock up with her slick pussy.
Then I slammed into her, burying myself balls-deep inside her tight, wet heat.
Manaka moaned shamelessly, as I fucked her hard against the pillar, the sound of skin slapping echoing through the garden.
Her breath came in ragged gasps as I thrust into her again and again.
Our taboo life continued without restraint.
Now we're no longer stuck fucking just in our room, we keep going at it like animals, fucking each other like crazy wherever and whenever the urge hits us.
...
Alright, Gilgamesh as a sister won the vote.
Now the question is: should I make the next story a single heroine route or a harem?
Should the MC go full conqueror mode or take the path of hedonism? And where should the starting point be? Mesopotamia? Fate/Zero? Chaldea?
The most important question is: should the MC be a villain or a good guy?
Remember, when I write a villain MC and when I write a good guy, it's vastly different.
When the MC isn't a villain, he's usually a chill dude, but yeah, people always yap when the MC is a good guy. I'm honestly tired of listening that shit. They say he's too emotional, too nice, too indulgent with girls or whatever.
So yeah, once the vote is done and the result is decided, don't blame me if I go full menace mode just because someone complains about the MC being too nice or too evil.
I'm mostly quiet when the decision is mine alone. But if you voted, I followed your preference, and I delivered what you wanted and you still whine? Yeah, that crosses the line. I'm not gonna play the nice guy when it comes to that.