📢 Maybe you see "V2" or "V3" and so on in the NOVEL TITLE, it means what VOLUMES the NOVEL is.
📢 Maybe you see "V2" or "V3" and so on in the NOVEL TITLE, it means what VOLUMES the NOVEL is.

V1 There is a Backside in This Youth! Chapter 1

The Women You Meet by Accident on the Rooftop Mostly Have...

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Volume 1, Chapter 1: The Women You Meet by Accident on the Rooftop Mostly Have…

It happened in the early summer, unbearably hot.

That day, after school, my head felt strange from sitting in a stuffy classroom for so long, and for some reason, I ended up on the school rooftop.

Looking back, maybe I was seeking the cool breeze on the rooftop to escape the heat.

I should have gone home early and rested in an air-conditioned room————

Anyway, it was a rather unwise choice I made that day.


Lost in the liberating sensation of the open rooftop, I momentarily didn”t notice that someone else was already there.

After a while, my gaze met “hers”, and I was startled by her presence.

Her black hair, slightly tinged with blue, was beautiful, and her features were as finely chiseled as a sculpture.

Her chest wasn”t particularly large, but it wasn”t small either.

One look was enough to confirm we lived in different worlds.

Her name was “Yae Takashiro”.

She was a third-year student at our school and the much-admired student council president.

There was no student who didn”t know her.

“Did you come here to cool off too?”


Yae Takashiro suddenly spoke to me, and I froze.

I hadn”t expected the senior to initiate conversation with me.

Takashiro tilted her head, looking at me as I stood frozen.

Oh no.

It”s rare for Takashiro to greet me. If this continues, it might seem like I”m ignoring her.

“Yes, that”s right… it”s like that.”

“Indeed. But unfortunately, it”s not as cool as we imagined.”


Although I was distracted due to my nervousness, the heat on the rooftop—rather, the outdoor heat made me realize it was different from the humid heat inside.

Moreover, it was the rooftop.

Without anything to provide shade, it was actually quite uncomfortable.

“Did you come here to cool off too, Takashiro-senpai?”

“Yes, do you know my name?”

“Of course. After all, you”re the student council president of this school.”

“I am the student council president… haha, it”s a bit embarrassing to hear it said back to me.”

Takashiro”s face turned red.

What kind of adorable creature is this?

The stark contrast to the serious student council president image made my heart race.

“Ah yes, I came to cool off, but it seems I was mistaken. There”s a student council meeting coming up, and I wanted to dry off my sweat before that.”

“I see.”

“But, rather than drying off, I”ve ended up sweating more… haha.”

Takashiro, drenched in sweat.

The moment this image came to mind, I successfully glanced sideways and captured her entire figure.

It took only 0.1 seconds.

I tried to imprint her image in my mind in a time shorter than a blink.

(Oh… no, no)

I am a gentleman.

Even though I could see Takashiro”s underwear at this moment, looking away is the righteous thing for a man to do————

By the way, I couldn”t see anything at all. What a pity.

“What”s wrong?”

“No, nothing.”

“I see…”

I smiled at Takashiro.

Showing disappointment is second-rate.

As a first-class gentleman, I can always remain calm.

“I remember… you”re Hanashiro from the second year, right?”


“Mm, sorry, did I get it wrong?”

“No, not at all… you got it right… But we”ve never interacted before, have we? Despite that, you still remember my name?”

“Yes. I am, after all, part of the student council. I can remember the names of all the students in the school.”

Who would actually remember such things————

Without showing off or pride, she casually mentioned this, which seemed extraordinary to me.

Our school has nearly a thousand students.

Remembering the names of so many students is extremely hard work.

Do I need to be able to do this to become the student council president? …No, that can”t be.


Right now, in front of Yae Yagashi, a superhuman, I am utterly terrified.

After all, remembering the names of all the students in the school is a feat that, if we”re talking about normal human beings, would be impossible to achieve.

Is it the overwhelming aura that”s terrifying, or is our world just different?

I feel a bit embarrassed about my own pretense.

The shame born from this is tormenting me.

“…I should be going now.”

After receiving a message on her smartphone, Yae Yagashi said this to me.

She had mentioned earlier that she was going to a student council meeting, so the message was probably a notification for that.

“Natsuhiko Hanashiro, thank you. Because of you, my mood has improved a lot.”

“If I was able to help, then that”s all the better.”

After I returned her smile, she smiled back at me.

Then, as Yae Yagashi walked past me, she turned her head back before re-entering the school building.

“Natsuhiko Hanashiro, I sensed an interesting scent coming from you. You should come to the student council room sometime. We”ll welcome you together.”

“Tha-thank you———”

Just as I was about to express my thanks.

A refreshing breeze blew across the rooftop.

A wind that seemed to ease the body, damp from sweat, making it comfortable and pleasant.

However, this breeze created a sight that made me doubt my eyes.

I couldn”t help but utter a foolish sound.

The refreshing wind, turning mischievous, had lifted Yae Yagashi”s skirt.

Under the astonishing force of gravity, my gaze was drawn to the lifted part of Yae Yagashi.

About this, I could only say it”s in my nature. I truly hope she can forgive me.

But from it, I felt a shock I had never experienced in my life.

From a common-sense perspective, there should definitely be something there.

I couldn”t confirm the presence of that indispensable thing.

Ignoring the fact that I noticed, Yae Yagashi nonchalantly returned to the school building.

Left alone, I looked up at the sky and murmured.

Yae Yagashi — did she not wear underwear?

Private Phoenix Bright High School. That”s the name of the school I attend.

With over three hundred students per grade level, the total comes close to a thousand.

To describe this school in a word, it”s purely a key school.

With an outstanding university entrance rate within Tokyo, it”s a gathering place for students aiming for higher education.

Although it sounds odd coming from me, the school”s deviation score is average.

In some sense, my admission here is almost a miracle.

And the student council president of Phoenix Bright High School, that very Yae Yagashi.

Just being the student council president here grants considerable advantages in many universities and job opportunities.

In other words, if you”re not extremely outstanding, you can”t be the student council president of this school.

This is no exaggeration; graduating as the student council president from this school assures a stable future.

Therefore, I heard that the annual presidential elections are always fiercely competitive.

For someone like me, who”s lucky just to be in this school, it”s none of my business.

But it”s precisely because it”s so distant from me that I can”t help but be curious.

Yes, what I saw on that rooftop was ————


“What do you think about Yae Yagashi not wearing underwear?”

“What are you talking about?”

She looked at me as if I were trash, sending a sharp gaze that deeply hurt me.

Even so, I knew I was at fault.

After all, I had said something nonsensical. It was plain sexual harassment. Although there was no one nearby, this was a normal classroom.

Still, if I don”t solve the mystery of why Yae Yagashi wasn”t wearing underwear, I”ll be forever trapped in this labyrinth.

“Hiyori, please hear me out.”


“A direct hit on the top of my head from a karate chop, as if an electric current passed through my body.

The owner of this murderous hand chop, Ichiyo Hiyori, has been my childhood friend since elementary school.

A decade of karate training. She likes meat and straight punches. Hates empty cans and plastic bottles left on the roadside.

Her slightly reddish short hair is neat, giving her a more masculine impression than most boys.

She”s good-looking and popular among the boys as someone easy to talk to.

Although we attended the same elementary, middle, and high schools, there was no special intention behind it.

It”s just that our houses are close, and our deviation scores are similar. That”s all there is to it.”

However, it seems like Hiyo treats me as a punching bag, often resorting to violence against me.

In other words, she”s the violent female protagonist.

That”s not really in vogue anymore.

Unfortunately, she”s no longer able to dominate.

“…Were you just thinking something rude about me?”

“I wasn”t.”

That was close, why does she know?

“Ha, it”s rare for you to be serious about wanting to discuss something. I even notified them that today”s meeting would be late because of you… It”s a big loss of time for me.”

“It”s important to me! I want to know why the senior doesn”t wear underwear!”

“Don”t shout that in a classroom where we don”t know if someone might come!”

Karate chop, part 2.

But, I had anticipated this and crossed my arms to defend against the chop.

I”ve seen through the violent female protagonist”s intentions.

“Please…! I”m serious! I want to leverage your power as a member of the student council!”


Hiyo gave me an incredibly cold look.

Don”t do that, it excites me————I was too scared to say this calmly.

But my instinct tells me.

Yae Takashiro has a big secret.

That”s why, even if Hiyo is scary, I can”t back down here.

“…Generally speaking, is it that concerning if the student council president doesn”t wear underwear? I can”t understand it.”

“Eh? If someone isn”t wearing underwear, wouldn”t you normally be concerned?”

“No… well… maybe.”

Perhaps because I made a rare valid point, Hiyo looked troubled.

I felt a rare sense of victory.

It”s satisfying to out-argue her. I felt much better.

“So, suppose I”m willing to help you, what do you want me to do?”

“Definitely create an opportunity for a face-to-face conversation, and I will directly ask her, “Why don”t you wear underwear?”————”

“You want to tell her that, idiot!”

I got scolded.

“Ha… You really are a complete idiot.”

I was surprised to be called an idiot by her. Don”t be fooled, my academic performance is actually quite decent.

I am really curious about the senior”s underwear.

Yae Takashiro is a human who must wear underwear.

————No, there isn”t anyone who can go without underwear.

Sorry, the topic seems to have gone in a strange direction.

What I mean is, look, there are occasionally people who deliberately don”t wear underwear.

I think it doesn”t matter.

After all, for boys, as long as they don”t take off their pants, no one will know, and for girls, as long as their skirt isn”t lifted, no one will know if they”re wearing underwear or not.

But no matter how much you struggle, the world”s impression of it is “pervert”.

Who would have thought that Yae Takashiro, a girl who excels in both academics and morals and is pure and cute, might be a pervert?

The color would probably be white. Few decorations.

There couldn”t be light blue and white stripes or animal patterns.

Black… is possible. The pure and cute girl is actually wearing black underwear. Isn”t that seductive? Black is possible. I”d rather she wear black.

If possible, a thong—yes, a thong.

If there”s the most peaceful truth, then it”s that I saw wrong.

After all, my vision is quite good, and my excellent brain still remembers the scene.

But if you ask if I saw it clearly, I”m not so sure.

After all, the skirt was fluttering, and the senior quickly held down the hem and hid it.

It”s also possible that because I saw the limit of skin area, I concluded “not wearing.”

In any case, maybe my perception is a bit twisted.

Although I”d like to say that it”s inappropriate for high school students to wear thongs, it”s still much better than not wearing underwear at all.

Just like the term “decisive underwear,” thongs are ultimately a weapon to showcase charm.

But not wearing underwear is still too unguarded.

“Even though it”s a co-ed school, half of the students are male. And they are high school boys grappling with their desires.

If I were to make a comparison, they”re like goblins. Or perhaps, half-orcs.

The idea of young, unsuspecting females entering the dens of goblins and half-orcs… it”s common knowledge that this scenario is fodder for erotic manga, games, and doujinshi.

If my senior really isn”t wearing underwear, then, knowing this secret, I must protect her.

To prevent her from becoming a victim to goblins and half-orcs, I must safeguard her.

What? Ulterior motives? Impossible. Don”t underestimate me; I am a gentleman through and through.

I won”t share a girl”s secret with anyone else. I”ll keep it as my personal secret, carrying it with a sense of superiority to my grave.

All I need is an opportunity to exchange contact information. Everything else is secondary.

————Wait, is that really it?

“Your move.”


Lost in thought, I couldn”t dodge the continuous punches from Hiyori.

“What are you doing…! Stop it!”

“I saw you making a face like you were thinking of something bad. I wanted to snap you out of it.”

“Thank you! Can you please stop pulling my nose now!?”

Hiyori had grabbed my nose and was yanking it outward.

“Phew, I almost became a man with a sunken face.”

“If you want another punch, just say so.”


Hiyori seems in a worse mood than usual today.

Well, same as always.

“…So? What do you actually want to do? Explain it to me in a way I can understand.”

“I want to know why Yae Yagashi isn”t wearing underwear.”

“Ahaha, I have no idea what you”re talking about.”

Even though she was the one who approached me.

“Knowing that will help you return to normal, right? Then it”s simple.”

“Simple? How?”

“I”ll ask her. Despite appearances, as a student council officer, I have a closer relationship with her than others… And, it might be easier for a girl to ask, right?”

“No, no… I feel, well…”

“What? Isn”t that more straightforward?”

“That”s… not very romantic, is it?”

“You know, it might be better if you died twice and came back to life. Maybe reincarnate as limescale in a sink.”

“Ahaha, that”s a bit too harsh, Hiyori.”


Hehehe, she”s not joking.

“…So what will you do? I”m not planning to help you commit a crime, you know?”

“That”s what”s bothering me. How to solve the underwear mystery without being accused of sexual harassment…”

“It”s strange how it sounds like a real concern when you say it so seriously.”

“At least I”m genuinely concerned right now.”

I don”t know why I”m so fixated on whether my senior is wearing underwear or not.

But it”s true that I want to know, and this curiosity has transcended mere sexual desire and reached the realm of a quest for knowledge.

When I find out, I feel like I”ll have grown up.

This is definitely not a dirty joke.

“Hiyori, could you introduce me to Yae Yagashi again…”

“Ha… Even if you ask me, I can”t introduce you to her. If you just wanted to get close to her, that”s one thing, but do you think I would say, “Okay, I understand. I”ll introduce you to her,” for such a stupid reason as your curiosity about why she”s not wearing underwear?”

“Absolutely not.”

“Don”t you get it?”

“But please, think of something for this!”

“I take back what I said. You don”t get it at all.”

Hiyori let out a deep sigh,

Looking more tired than usual, probably because of the topic of conversation.

No doubt, I am the reason for her fatigue.

“Anyway! I can”t help you! If you want to get close to her, do it on your own. After all, if people around us think we have an abnormal relationship, it could affect my internal evaluation.”

“My actions can affect your internal evaluation?”

“If you do something to solve this underwear mystery, it”s bound to have an impact, right?”

Yeah, that makes sense.

“Then I”ll just have to figure it out on my own.”


Since there”s a possibility that Yae Takashiro is hiding the fact that she isn”t wearing underwear, I can”t seek help from anyone else.

I approached Hiyo for advice because she”s a student council member.

I wouldn”t spill someone else”s secret just because she”s my childhood friend.

Well, I”m at a loss for now.

If we could have an accidental meeting on the rooftop, I might be able to ask her directly, but if a male with no special connection to her suddenly asks, “Why aren”t you wearing underwear?”, even Takashiro would be startled.

That”s why I felt the need for Hiyo”s help————

“Hey, Natsuhiro.”


Hiyo called my name, interrupting my thoughts.

“Are you serious?”


“…I see. Then there”s no helping it.”


Hiyo, in front of me, was typing something into her smartphone.

As I puzzled over her actions, a sudden shock from behind hit my neck, destabilizing my consciousness.

In my shaking vision, Hiyo, rising from her chair, caught me as I was about to fall.

“Natsuhiro, sorry about this. But you”re also at fault.”

Before losing consciousness, the last expression I saw on Hiyo was of sadness————not really, she looked very impatient.



A faint sound brought me back to consciousness.

I slowly opened my eyes and found myself in a dimly lit classroom.

I must be at school, but I don”t recognize the decor of this classroom.

“…Looks like he”s awake.”

Before I could feel uneasy about the situation, I heard a female voice.

Three girls came into my view.

They looked down at me, seated in the chair, evaluating me.

“Th-That… what”s going on here————”

“You”re Natsuhiro Hanashiro, right? Sorry, but we”ve detained you.”


After the girl who initially spoke finished, I quickly understood my predicament.

My body was tied to the chair with ropes.

The ropes were just tied together; given time, I could probably break free.

Right, if I had the time.

But for now, they wouldn”t give me that chance.

“Um… Hiyo, did I do something wrong?”


The last of the three girls in the room, my childhood friend, Ichinose Hiyo, sighed deeply.

“Because it”s you, you should have realized by now. What this place is, why you”re being detained.”

“…I guess.”

I looked at them again.

The other two girls, besides Hiyo, seemed familiar.

“That… you”re Saito-senpai and Futaba Tsubaki, right?”

“Oh, you know us?”

Saito-senpai smiled seductively.

The student council vice-president, Saito Alice, with her light purple hair and non-Japanese features, was indeed a mixed-race.

“Is she really a high school student?” Her mature appearance that seemed to beg the question attracted many male students, even leading to the formation of a fan club.

Appearing before me like this, she was indeed seductive ———— no, sexy.

And the other one was first-year student Futaba Tsubaki.

Although overshadowed by the strong presence of Takashiro-senpai and Saito-senpai, her determined attitude and petite figure still earned her a fervent following.

The so-called kouhai (junior) attribute.

I could understand why fans were attracted to her cuteness.

What was her role again? Hiyo was the treasurer, so by process of elimination, she must be the secretary?

Speaking of which, Hiyo being the treasurer is a bit funny to me.

Despite being so rough, she had to do such meticulous calculations ————— it”s impressive she could manage.

“Hi-Hiyo-chan? Why did you suddenly kick Hanashiro-kun in the face?”

“Sorry, he had a look on his face like he was thinking something rude about me.”

Her intuition is too sharp.

“You”re amazing to have survived a kick from Hiyo-senpai.”

Futaba looked at me with wide eyes.

Come to think of it, Futaba studied karate at the same dojo as Hiyo.

Because Hiyo talked about Futaba a lot, I vaguely remembered.

Then she must know that legend.

Hiyo once knocked out an opponent with a single strike at a middle school tournament.

According to witnesses at the time, her high kick looked like the Grim Reaper”s scythe, earning her the nickname “Red Reaper”————

Though it”s an exaggerated name, I personally think it suits her.

“…Wait? Please hold on.

Does this mean that this person, skilled in karate, has been applying potentially lethal violence on me every time?

Since violent female protagonists aren”t very popular these days, is this time it”s a murderous female protagonist?

That probably won”t become popular.

“… (Cough) Anyway! Natsuhiko Hanashiro, you have been detained by our student council members,” Saito-senpai forcefully steers the conversation back.

Was Hiyori playing with her smartphone earlier to contact them?

And the one who probably knocked me out must be Futaba from this place.

The only reason I can think of for being confined here, in a place they freely use, the student council room, is…

“I was brought here… because I know some secret information about Yae Yagashi that shouldn”t be known?”

“It really helps that you understand so quickly, Hanashiro. Yes, you know something about Yae that should not be known.”

“But, not wearing underwear doesn”t seem like a big secret…”

“…She wasn”t wearing underwear?”

“Well, yes.”

Saito-senpai turns her head and waves at Hiyori.

“Is what Hanashiro said true?”

“…Seems like it.”

“…That”s surprising. We told her not to forget.”

Saito-senpai seems to have a headache.

I thought the “not to be known” thing was about Yae Yagashi”s underwear, but it seems they didn”t have detailed information about what I saw.

Now I know that not wearing underwear isn”t a big issue, but it”s closely related to some significant secret.

“Are you planning to silence me?”

“We were planning to, sorry.”

Saito-senpai slowly moves closer.

“Wh-what are you going to do!?”

“Take off your clothes.”


This is a reward. If it”s for sealing my lips, bring it on as many times as you want.

Or I can undress myself.

“What”s with that lecherous look? You do realize you”re about to be photographed for blackmail, right?”


That”s when I notice.

Futaba is holding a camera next to Hiyori.

Ah, I see. They plan to photograph me embarrassed and undressed.

If I don”t want this photo to spread, I should keep Yae Yagashi”s secret.

“Eh? But isn”t that still a reward?”


My comment freezes the atmosphere.

“I wasn”t planning to reveal Yae Yagashi”s secret anyway, so I”m just a guy getting undressed by Saito-senpai. How is that not a reward?”


Hiyori has a headache.

Did I say something weird?

Being undressed by a beautiful girl without any risk feels like a reward.

Although embarrassing in front of others, if it”s a beautiful girl, it”s fine.

After all, such threats have no effect on me.

“What if… we spread your nude photo by accident? Wouldn”t you hate that?”

“I would hate it, but if I do nothing, you wouldn”t want to spread it, right? So no problem.”


For some reason, Saito-senpai looks at Hiyori for help.

Huh, aren”t they undressing me anymore? My shirt collar is already open.

“…Saito-senpai, I need to talk to you about this guy.”

Hiyori, looking shocked, calls Saito-senpai aside.

The three of them start a meeting, leaving me alone.

It unintentionally becomes a bit of a tease, but since my clothes aren”t much removed, I don”t get excited. Seems I still need some training.

“————Hanashiro, sorry to keep you waiting.”

After a while, Saito-senpai returns with a rather bitter expression.

Hiyori also looks resigned, but that”s usual for her.

I can”t read Futaba at all. Her facial expressions are limited.

“We won”t threaten you anymore.”

“Eh, is that so?”

“In exchange…”

Saito-senpai hands something to me.

It”s an armband.

A rare item that only a few possess, proving one is a student council member.

“We”ve decided ———— to assign you to the student council for miscellaneous tasks, and to guard Yae Yagashi”s secret.”


📢 Maybe you see "V2" or "V3" and so on in the NOVEL TITLE, it means what VOLUMES the NOVEL is.
There is a Backside in This Youth!

There is a Backside in This Youth!

Kono Seishun ni wa Ura ga Aru!
Score 8
Status: Ongoing Type: Author: Artist: Released: 2023 Native Language: Japanese
The unattainable interest consists of effort and lies.Although I had many friends but no close friends, and was average in sports and studies-I, Hanashiro Natsuhiko, a self-proclaimed 'high school student who doesn't pretend', was brought to the student council room because I noticed that the student council president, Takashiro Yui, might not be wearing underwear!The athletic club's standout player, Hiyo Ichinose, the naturally talented and older vice president, Alice Saito, and the quiet yet intelligent Futaba Tsubaki... There, in the illustrious Fumimyo High School student council, I witnessed their "hidden truths". ""There are only eight months left until graduation, Hanashiro-san, you should help too!""Eh! So you're really not wearing anything!!?"Grades, friendship, prestige-all for the sake of the 'perfect high school life'.They suppressed their individuality behind that dazzling youth and dragged me into their student council activities!??Behind the enviable and joyful youth, there may be hidden efforts and lies-?The secret time spent with (?) these perfect girls, a school romantic comedy in disguise, begins!


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