After finishing breakfast together with Mai Sakurajima—sweetly sharing bites and smiles—Ryuichi watched her off as she got into her car and headed for the studio.
Only then did he teleport back home.
The moment the teleportation circle faded, Ryuichi was greeted by a rather familiar sight:
two beautiful girls lying fast asleep on his bed—Rias and Asia.
He sighed. Again?
Rias he could understand—night raids were practically her habit by now—but Asia? When did she start following that bad example…?
Ryuichi shook his head with a quiet chuckle. The two were completely nude, the sheets tangled around their slender figures. He stepped forward and gently pulled the blanket back up to cover them properly.
But the rustling woke Rias. Her crimson lashes fluttered, and her sapphire eyes blinked open. She let out a small, disgruntled hum.
"Why didn't you come home last night?"
"Was with my girlfriend," Ryuichi said easily, brushing aside a stray strand of her scarlet hair that had slipped between her lips.
That blunt answer made Rias puff her cheeks, clearly annoyed.
"I let my guard down… If this keeps up, that human girl will steal away my adorable servant completely."
Fixing her gaze on him, she gave her usual imperious command.
"Next time you go there, you're taking me with you. Got it?"
Ryuichi laughed softly.
"If you come, then Asia will want to come too. Four people in one bed—that's pushing it."
"You're my servant. You should prioritize your master's needs, you know!"
Rias sat up indignantly—and the blanket that had been modestly covering her fell away, revealing every curve of her mesmerizing body to Ryuichi's view.
He let out a quiet sigh.
"Before you saved me, you used to sleep just fine on your own, didn't you?"
"Hehe~ well, can you blame me? Once you get used to sleeping while being hugged by Ryuichi, you can't fall asleep without his scent anymore."
Flicking her crimson hair over her shoulder, Rias smiled seductively.
"What's wrong? Don't tell me you don't like my body?"
"I do," he said simply.
"Then what's there to refuse? You should feel honored—this Rias Gremory only spoils you like this."
Rias laughed playfully, and Ryuichi leaned in, kissing her deeply.
Asia, who had just woken up beside them, pouted.
"Ryuichi, that's unfair… You always kiss only the President…"
Helpless, Ryuichi turned and gave the little nun a proper kiss too—long enough that by the end of it, Asia's head was spinning and her cheeks glowed bright pink with dazed satisfaction.
Afterward, Ryuichi got dressed and began his morning training routine as usual.
Physical conditioning was a daily must for him—something he never skipped, rain or shine.
Sometimes Rias and Asia would join in, though mostly as "assistants."
Still, seeing the two beautiful girls in tight sportswear certainly made for enjoyable motivation. And during breaks, well… there were often a few sweet, stolen kisses.
"So, what's on the agenda today?" Rias asked, sitting atop Ryuichi's back to add weight as he did push-ups.
"Going to tutor the new group I made contracts with," he said evenly. "Gotta help them with their studies and fulfill my end of the deal."
Even though Rias had secretly added magical weight to herself, Ryuichi continued his push-ups flawlessly—earning an approving smile from her.
"Alright then. Do your best."
"Always."
After a quick shower, Ryuichi checked the clock—just past eight in the morning.
He grabbed the teaching materials he'd prepared the night before, said goodbye to the two girls, and stepped into a glowing teleportation circle.
A shimmer of light—and he appeared inside the home of the five sisters.
The living room was empty.
But from upstairs, he could sense multiple presences.
Still asleep? he thought, glancing at the clock again. Eight a.m. already.
Ryuichi had long been an early riser. He actually enjoyed the peace of early mornings, but his discipline meant he never overslept—even without an alarm clock.
Just as he was about to go upstairs and knock, a door creaked open.
A girl in cute pajamas stepped out and blinked down at him.
"Eh? Ryuichi? What are you doing here?"
He looked up, scanning her features—shoulder-length hair, no butterfly ribbon, no headphones, no headband, no hairpin…
…Yeah, he had no idea who she was.
At least she wasn't Ichika.
So… which one was she?
"Uh… Itsuki?" he guessed uncertainly.
The girl pouted. "I'm Yotsuba!"
"…Right. Sorry, Yotsuba. Morning. I just got here."
He studied her carefully, trying to mentally pin down some defining feature that could help him tell her apart next time.
Unfortunately, he was being far too optimistic.
"Mmm… Yotsuba, who's that…?"
Three more girls emerged from their rooms, each with long, bed-mussed hair and wearing slightly revealing nightgowns—each identical to Yotsuba in face and figure.
Ryuichi's eyes moved from one to the next. No headbands. No ribbons. No accessories.
They were completely identical.
And since all of them had a contract with him, he could feel a magical connection to each… which didn't help distinguish them at all.
Great. My face-recognition powers are useless.
He sighed softly. "Morning, Nino, Miku, Itsuki."
The three blinked, then all flushed red, crossing their arms over their chests.
Their nightgowns were indeed quite revealing.
"W–What are you doing here, you pervert!?"
Yup. That one was definitely Nino.
"Lewd wolf…" one muttered under her breath.
That quiet voice—Miku, for sure.
And finally: "Jeez, I haven't even changed yet…"
That calm, slightly exasperated tone could only belong to Itsuki.
Ryuichi mentally checked them off. Guess this is my new daily mini-game: spot-the-quintuplet.
The girls hurried back into their rooms to change, leaving only Yotsuba behind, smiling awkwardly down at him from the stairs.
"Ichika hasn't gotten up yet," Ryuichi asked, holding the textbooks under his arm.
"She's in the last room down the hall. Let's go wake her—oh, but um… don't be too surprised when you go in, okay?" Yotsuba warned, scratching her cheek awkwardly.
Ryuichi tilted his head, puzzled, but nodded.
Then Yotsuba opened the door to Ichika's room—
—and he instantly understood.
Shoes—at least ten pairs—were scattered haphazardly by the entrance, even though the shoe cabinet nearby was already stuffed full. Shopping bags piled everywhere, and inside some he could see stockings and various bits of clothing.
The light was off, but Ryuichi's Devil-enhanced eyes saw everything clearly: panties and bras hanging carelessly from hangers, garments strewn everywhere.
Utter chaos.
"…Did a burglar break in or something?" Ryuichi muttered.
Yotsuba, unfazed, flicked on the lights.
"This is just Ichika's room."
On the bed, Ichika stirred beneath her thin blanket, slowly sitting up.
"Mmm… Don't treat my room like some unexplored wasteland, okay~?"
"Honestly, you've let it get messy again," Yotsuba sighed, hands on her hips, already walking over to tidy up the pile of clothes near the closet.
Ichika just laughed softly and flopped back down.
"Still sleeping?" Ryuichi said, lightly kicking the foot of her bed. "Get up. We've got studying to do."
"Oh come on," Ichika said teasingly from under the blanket. "A boy finally comes into a girl's room, and that's the first thing you say?"
"I'd love to compliment you, but your room leaves me no room for flattery," he deadpanned.
Then he looked away suddenly and said flatly,
"Pull up your blanket. You're showing more than you should."
Turns out, Ichika had the same habit he did—sleeping in the nude. And right now, her blanket had slipped dangerously low, revealing a little too much bare skin.
Ichika froze, then hurriedly yanked the blanket back up.
"Ahaha… sorry, didn't realize I wasn't wearing anything. How embarrassing~"
Her cheeks flushed a faint pink.
Ryuichi, already turning his attention elsewhere, glanced at her dressing table—littered with open makeup cases, brushes, and lipsticks of colors he couldn't begin to name.
High school girls have this many cosmetics? he thought wryly.
Then, unbidden, Mai's face came to mind—her neatly arranged vanity, her light, natural makeup before heading to work. Maybe that was part of her mature charm.
Ichika, too, had that air of maturity compared to her sisters—both in personality and allure.
"Yotsuba, toss me a few clothes from over there," Ichika said.
Yotsuba nodded, rummaged through a pile, and accidentally pulled out a lacy black lingerie set. She blinked and gulped.
"Whoa… you wear stuff like that?"
"Idiot! Don't wave my underwear around!" Ichika laughed and scolded playfully, tightening her blanket. Her eyes flicked toward Ryuichi—who, notably, remained perfectly calm.
"Get dressed," he said casually. "I'll be downstairs."
With that, he turned and left, closing the door behind him.
Outside, the other four sisters had finished changing. With their trademark accessories in place again, it was finally possible to tell who was who.
Good. No more guessing games.
By the time Ichika came yawning down the stairs, Ryuichi and the others were seated around the dining table.
"I brought breakfast," he said. "Eat while it's hot."
Ichika glanced at him with mild surprise. She was wearing a fitted gray V-neck T-shirt and tight white pants that perfectly highlighted her curves—clearly, she'd taken time to get ready.
"Oh? You're pretty considerate, huh?" she teased, sitting down.
The others had already started eating, chatting idly about random things—absolutely none of which had anything to do with studying.
Ryuichi could instantly tell why their grades were so low.
Only after they'd all finished did he gently tap the table.
"Alright. Let's get started with your lessons."
"Ehh… can't you just invent a magic spell that makes us smarter or something?" Nino groaned.
"That's a different contract," Ryuichi replied calmly. "Creating a spell like that for humans would cost about… fifty years of lifespan."
"Ha!? Never mind then!" she squeaked, retreating immediately.
He smirked inwardly. So much for that.
Ichika stretched lazily.
"Honestly though, what's the point of studying? Once you're out of school, none of this stuff actually matters."
Her words earned nods from Nino, while Miku stayed quiet.
Yotsuba and Itsuki, however, obediently opened their textbooks—they were the most earnest of the group.
Ryuichi sat across from the five sisters, completely composed.
"It's not that studying is useless," he said. "It's that the way you study is useless."
The girls froze.
Even Ichika was left speechless for a moment.
And though they didn't want to admit it, deep down, they knew he had a point.
"Geez… always talking like some wise old man," Nino muttered, clicking her tongue.
Ryuichi didn't mind. His voice remained calm.
"You don't have to care about me. But this—this tutoring—was Yotsuba's wish. Her desire was strong enough to summon me, a Devil, into your world. The least you can do is respect that."
That made all of them pause.
Yotsuba blinked in surprise, her cheeks turning pink.
"Ahaha… D-Don't look at me like that, everyone…"
The others exchanged glances.
And slowly, their expressions softened.
One by one, they opened their books in earnest.
Seeing that, Ryuichi nodded slightly and began his first tutoring session with the five sisters.