I Thought It Was a World Where Chastity Norms Were Reversed, But It Turns Out I Was Just Surrounded by the Overly Intense Girls in My Class

Chapter 1: No Matter How You Look at It, Chastity Norms Are Reversed

A world where ideas about chastity are completely flipped.

A world where there are far more women than men, and the ratio is reversed.
In this world, men are treated as precious and fragile beings who get hit on by women.

Women are the predators, men are the prey.

Just because someone is a guy, beautiful girls close in on him or even assault him. Things that would be unthinkable in a normal society happen all the time.

Morals, common sense, social norms—everything is twisted.

And the one who got reincarnated into that world was me, Baba Tatsuya.

One month ago, I suddenly woke up here. Fifteen years old. Started high school this spring.

Yet I have memories stretching back to early childhood. Even though I never lived them in my previous life, the memories of being Baba Tatsuya flow continuously from my old ones.

So daily life isn’t difficult at all.

Still, I often can’t keep up with this world’s common sense.

“Big brother! Why are you running away?”

“Because you’re trying to put handcuffs on me!”

“Handcuffs are love. Eternal love for you, big brother.”

“That’s exactly why it feels too heavy!”

“Is this your rebellious phase? I’m still not letting you go!”

Numazu City, Shizuoka Prefecture. Senbonhama Park.
The spot where you can see both Mount Fuji and the ocean at the same time.
Two people who looked like siblings around the same age were playing tag.

The one running away was a refreshing-looking boy. The one chasing him was a petite girl with a ponytail.

“Bigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrotherbigbrother…”

At first glance they seemed like a normal close brother and sister pair, but if you looked closer, the light had completely vanished from the sister’s eyes, and the brother’s face was twisted in pure terror.

“Big brother!”

Sunlight bounced off the waves, making the water sparkle. The faint silhouette of Mount Fuji in the distance looked almost like it was blessing the two of them.

“Uwaaaaaaaaahhhhhhhhhhh!”

The moment his sister caught him, the brother let out a scream of despair.

That scream was instantly swallowed by the sound of the waves and sank into the depths of the sea.

“Chastity-reversed worlds are scary…”

Honestly, this world doesn’t feel that different from reality.

At first I refused to believe I had been reincarnated into some ridiculous chastity-reversed setting. I thought I had just been reborn into a normal world.

But something was fatally wrong.

The words and behavior of everyone around me were abnormal in a way that could only be explained if chastity norms really were reversed.

Take my mom, for example.
Mom’s love for her son is just a tiny bit too strong.
She tries to wash my back when I’m in the bath, hugs me openly when she comes to wake me up in the morning, and most importantly, she makes way too much food.

Insanely too much food.
Even if I say I’m full, she suggests seconds. I get snacks three times a day, plus a midnight meal.

It felt like she was deliberately trying to fatten me up.
Then it hit me.

In a chastity-reversed world, men are vulnerable creatures who get attacked by women.
Making a boy’s body bigger is a parent’s way of protecting him from being overpowered.
And it wasn’t just Mom—my big sister was the same.

My sister, three years older than me, is an extreme bro-con.
She pats my head at the drop of a hat, hugs me out of nowhere, cleans my ears for me, and her sense of personal space is so broken it’s honestly terrifying.

On top of that, back in middle school a fan club formed around a handsome guy, my grandmother lectured me about how precious boys are—things that would never happen in the real world.

After all those experiences, I became completely convinced this was a chastity-reversed world.

“A chastity-reversed world, huh…”

Honestly, I never longed for it.

I’ve read manga and light novels with this kind of premise, but I never fantasized about actually living in one or fooling around with girls.

I was just a guy who wanted to focus on the things I loved.

But since I ended up here anyway, maybe it’s okay to be a little greedy.

There’s something I want to do in this world. A dream I couldn’t achieve in my previous life.

That is…

To play one serious game of shogi against a girl.

※

“Would you… play one game with me?”

Yes. My dream was simply to have a shogi match with a girl.

That was definitely supposed to be it…

Huh? Why?

Why is the girl in front of me starting to take her clothes off?

Even while being cornered by a classmate whose cheeks are flushed bright red and who is now standing there in just her underwear, my questions wouldn’t stop.

“I’ve made up my mind.”

Still, my classmate’s rampage showed no sign of stopping.
Her hand reached out smoothly, fingers gracefully loosening my necktie little by little.
It felt exactly like the moment before a man and woman start doing it…

How did it come to this?

Once again, I began reviewing everything that had happened since the entrance ceremony.