Prologue

Kyosaka Kei. Sixteen years old. Second-year, Class 3 at Touriyou High.

I’m a first-dan in kendo, with my biggest achievement being a top-eight finish in the national boys’ individual tournament in my first year of middle school.

I’m not in any clubs in high school, but I’d say my athletic ability is decent.

I don’t have many friends… or rather, I barely have any.

I’ve always put family first, and until recently, I was just your average broke high schooler, working day and night at part-time jobs to save up for my little sister’s college.

But my life took a drastic turn, and now I spend my after-school hours and weekends at the workshop of the doujin circle Mellow, taking care of the personal needs of the school’s three most beautiful girls.

For an outrageous hourly wage of 5,000 yen.

These three gorgeous girls are creators who rake in annual sales in the hundreds of millions while still in high school.

As the kept man of Karasuma Chikage, Ono Tsukasa, and Daigo Sakurako.

Naturally, my job includes all sorts of household chores—cooking, laundry, cleaning, shopping, you name it.

Plus, giving massages and pouring my heart into physical affection. That’s the gist of it.

—In the bathroom of a 3LDK apartment, where the faint scent of peaches seems to linger.

“H-Hey, Sakurako… Um, I mean, isn’t this already way beyond ‘something amazing’? Haha…”

Right now, I’m sitting on a bath chair in nothing but my underwear, looking utterly ridiculous…

While being pressed in on by the three of them, forming their usual triangle formation…

“Use your imagination, Kei-kun. You have a duty to make us happy.”

“I’d love to, really, but… I’m kinda drawing a blank here.”

…I was racking my brain over Sakurako’s suggestion that we should do “something even more amazing.”

“Don’t worry. I know you’ll find the answer, Kei-kun.”

Sakurako, aka Daigo Sakurako. Mellow’s scenario writer and a light novel author. A refined, mysterious girl with short, Somei Yoshino-pink bobbed hair and stylish glasses. Mega, no, super busty.

“Hehe, go for it, Kei.”

Chikage, aka Karasuma Chikage. Mellow’s voice actress, also active as a VTuber. A stunning beauty with dazzling long, straight black hair. Gorgeously busty.

“H-Hey, Okei-han, don’t move so suddenly. I’m, like… in paper-thin armor mode right now.”

Tsu-chan, aka Ono Tsukasa. Mellow’s illustrator, a god-tier artist with over 300,000 followers. A trendy gal with cute, half-up blonde bobbed hair. Modest chest.

“Hey, Sakurako? How about giving Kei a hint?”

“Not a bad idea. We’re just spinning our wheels otherwise. Like Tsukasa’s chest.”

“Hey, don’t treat my chest like it’s game over or something!”

Sigh. This indescribable sense of guilt is already pretty intense…

…Thanks to my desperate pleas that going fully nude would be too much, all three have wrapped themselves in bath towels, but it’s still a dangerously close call.

“S-So… Sakurako, about that hint?”

“For example, what I’m pressing against your arm right now. What is it?”

“Y-Your chest, right…?”

No, maybe mega-melons.

A high schooler with I-cup assets. Yeah, definitely mega-melons.

“Calling it a chest is the easy way out. But that’s just a convenient label.”

Only Sakurako would dismiss a body part’s name as mere convenience with such flair.

“Let’s call this mass of flesh Object X.”

“…B-Busty X?”

Wow, her phrasing suddenly got all sciency.

“Exactly. If you let Object X float in the bathtub, it’d bob up and down like a water balloon. You can imagine that much, can’t you, Kei-kun?”

The thing gently pressing against my right arm right now feels less like a taptap and more like a boingboing, but that’s not the point!

“I-I can imagine it, sure. But how does Object X relate to… something amazing?”

“Object X is just an example.”

“Huh?”

“The point is, I want you to visualize your imagination. How would Creature A and Creature B mix to get closer to ‘something amazing’? Put that scene into words.”

This is starting to sound like a health class lecture.

“…That’s a tough one.”

“It’s fine whether you’re direct or metaphorical.”

In other words, she’s saying she wants something akin to intimate adult activities.

I get it, but meeting that request feels like a high hurdle to clear…

Sitting here in my underwear, surrounded by gorgeous girls in nothing but bath towels, acting all gentlemanly is kind of absurd…

“Kei~”

“Eek!”

A warm, fresh breeze blew from the bush to the stick.

A hot breath tickles the hole in my left ear.

“Ch-Chikage… I told you to stop doing that, didn’t I?”

“But you’re being so slow, Kei. Come on… hurry up and answer already…”

Whispering in a sweet, tangy voice like fizzing ramune soda, it’s none other than Chikage, the master of live ASMR.

A sidelong glance reveals her kneeling, her sharp eyes narrowed with a pout. Since she’s at eye level with me on the bath chair, the intensity is unreal. And let’s not forget, with just a single bath towel for defense, her gorgeous bust looks even more provocative.

It’s like… boob-tastic…

“I-I’m seriously trying to think here, okay? Like, what’s needed first to do… the amazing thing you’re talking about…”

“Hmmm. Really…?”

“B-Believe me!”

“Then make me believe you.”

“Eep…”

Her fingers graze my thigh, sending shivers down my spine.

The way her skillful touch makes me tremble means I’m probably just a pathetic guy being played like a fiddle in Chikage’s hands…

“…Don’t you want to let your desires run free, Kei? Let’s mix together like a blended juice, all mushy and gooey.”

What a scandalous way to put it!

“Excellent. Chikage’s description is spot-on. Come on, Kei-kun, be honest.”

Sakurako’s mind is usually crystal-clear. Her occasional breakdowns are her only flaw.

“H-Hey, you two…! Eek!”

Chikage and Sakurako press their barely-contained assets against me from both sides, squishing and squashing. It’s like I’m the filling in a sandwich.

My rationality is getting scrambled like eggs mixed with mayo, and I’m losing track of what’s what…

…The only one pulling me back to reality is—

“H-Hey, Okei-han… you’re not forgetting about me, right?”

Reflected faintly in the bathroom mirror is Tsu-chan, her face slightly flushed.

Even as she presses her modest chest against my back through her towel, her shy nature keeps her frozen in place. Oh… my angel.

A wingless angel isn’t pitiful or tragic—just pure and precious. My ultimate source of healing…

“…Phew. This firmness is reality.”

“…Who’re you calling a washboard, huh!?”

“No, not your chest’s firmness—I meant your expression looked a bit tense…”

“H-Huh? Me, nervous around Okei-han? No way, that’s impossible!”

“I get it. You’re nervous about being in just a towel, right?”

“N-No way! This look is totally fine! So fine, I’m practically oozing grown-up allure…!”

Grown-ups don’t call themselves grown-ups, do they? God, she’s so cute.

And so, it goes like this—

Sakurako, with her precise, flawless moves.

Chikage, erupting with pent-up emotions like a volcano.

Tsu-chan, a radiant exterior hiding an insanely shy core.

—The three most beautiful girls at school, each with their own unique demands, keep pushing me to embrace my role as their kept man.

To rein in this chaotic situation, I need to work my brain like I’m solving a puzzle ring.

“Hey, Sakurako…”

“When Kei-kun whispers, it’s always for negotiations. I’m not backing down.”

Ugh… She saw right through me, but when I’m surrounded like this, convincing Sakurako, the reasonable one, is always the best move. She holds the key to escaping this four-sided siege.

“But you always say you’ll match my pace, right, Sakurako?”

“There’s no lie in that. But you’re a bit too slow, Kei-kun.”

“Yeah, I know… but for me, this situation is already pretty amazing.”

Bath time with three gorgeous girls in nothing but towels.

If this isn’t amazing, what is?

“True. This situation is out of the ordinary for us too.”

“Right? I’m relieved you get it, Sakurako.”

I’ve got my foot in the door. Now, I just need to phrase it so Sakurako will compromise…

“…I’m a guy, so I do want to know what happens when A, B, C, and D mix together. But honestly, I’m not confident my emotions can keep up with that yet.”

“I see. If that’s your answer, Kei-kun, I won’t push too hard. Good job putting it into words.”

“Th-Thanks, Sakurako.”

When Sakurako pats my head, I feel ten years younger.

Strict yet kind. Sharp-tongued but sweet. Cool on the surface but deeply caring. She leaves deliberate openings while staying impenetrable—a girl who stays true to herself. That’s Sakurako.

So, if I lean on her, she’ll usually give in, but… is it okay for a kept man to lean on his employers like this? I wonder.

“Tsu-chan, sorry about that.”

“…Eh, it’s fine, I guess? I’m, like, a mature lady, you know. Waiting for Okei-han to stop being such a wimp is, like, my kindness or whatever. Yeah.”

“A mature lady, huh? Just for reference, what kind of ‘amazing thing’ were you thinking of, Tsu-chan?”

“H-Huh? W-Well… um, until X-Day… like, sealing away Losva or something? …H-Hey, wipe that smirk off your face!”

Smack! She slaps my bare back. Ow!

Tsu-chan acts all liberal, but she’s the most conservative of the three.

A gal who’s pure and innocent at heart, yet stubborn and prideful. In short, she’s easily swept up, probably half-relieved and half-anxious about this situation.

“Muu…”

In stark contrast is Chikage.

“Even if Sakurako and Tsukasa forgive you, Kei, I’m not letting you off so easily.”

Unlike the neutral Sakurako, Chikage’s a progressive, always chasing new thrills.

Always pushing further, deeper. With that single-minded focus, she comes at me with bold moves, making her both brutally honest and emotionally intense.

Add to that her active, aggressive side—

“C-Calm down, Chikage. I’m not trying to brush off your feelings or anything.”

“Hmph, you can say whatever you want with that mouth of yours.”

“Th-Then how about this? You and I can wash each other’s backs. How’s that…?”

“…Hmm? You mean you’ll scrub my back all nice and thorough?”

—Like this, she jumps at anything new and untested with eager curiosity.

“Yeah… but, like, wash your front yourself. Just the back for today. Once I get used to it… maybe we could, um, wash each other all over. I-If you don’t want to, you can totally say no!”

“…No way I’d say no. I want to wash each other with you, Kei.”

Phew. …Somehow, I’ve cleared the first hurdle.

It’s a stroke of luck that I managed to redirect Sakurako’s “something even more amazing” to Tsu-chan’s earlier suggestion of bubbly, slippery fun (back-only version).

…But one wrong move, and I could get steamrolled, losing my chastity in the process—a minefield I’m still navigating.

“Kei-kun, no spoiling just Chikage. Fair’s fair. I want to be spoiled by you too.”

“I-If it’s just the back, I, um, wouldn’t mind Okei-han scrubbing me too…”

“Hey, you two! Kei said he wants to wash me, so don’t get in the way!”

—Even so, facing these three means taking risks and making bold moves.

…Wait, am I turning into some sleazy guy playing three girls at once?

No, but, still… this must be part of a kept man’s duties…

“If Kei-kun’s washing our backs, this is no longer necessary.”

“…H-Hey, Okei-han, don’t turn around, okay?”

“Kei, you should take yours off too. Let’s all get stark naked.”

Swish. Three bath towels flutter through the air.

“…N-No, wait, you don’t all have to strip at once—one at a time…”

“Give it up, Kei-kun. We’ve compromised as much as we can. Now it’s your turn to serve us as our kept man.”

Scratch that. I’m definitely the one being played here.

A glance in the mirror catches Tsu-chan’s face, red up to her ears…

(…If you’re embarrassed, you don’t have to take off the towel.)

Even so… my heart’s pounding like crazy…

The only way to avoid seeing their naked bodies is to shut my eyes.

…Because if I look, it’s over.

—Oh, I’m done for.

There’s no way my tofu-like mental fortitude can handle this kept-man life with these three.

But it’s also… kind of blissful… Wait, what!? T-The hands on my thighs!

Chikage and Sakurako’s fingertips creep up from both sides.

N-No way, are they trying to strip away my last stronghold—

“Ch-Chikage, Sakurako, stop! T-Tsu-chan, back off…! I-I’ll… I’ll take it off myself…!”

If you told guys out there they could reincarnate into a job where gorgeous girls strip you down to nothing for 5,000 yen an hour, they’d probably cry tears of joy.

For someone like me, who’s not used to girls, it’s a bit too much stimulation… but deep down, I know I’m a lucky guy.

To have met three girls who care for someone like me—

Kyosaka Kei. Sixteen years old. Living proudly as a three-braid-level kept man, even today.