"Onii-chan, your way of speaking is so weird. It feels off, like something from a long time ago..."

"Ahh! Imouto, Onee-chan isn’t feeling well today..." I blurted out awkwardly to cut off her suspicion.

"Huh?"

But after hearing my clumsy words, the adorable girl upstairs on the second floor stared at me with even deeper confusion.

—Crap!! I accidentally called myself "Onee-chan" in front of my sister again!!

Cold sweat instantly trickled down my face.

"So strange... truly strange. This Onii-chan feels both familiar and unfamiliar..."

My sister murmured from above.

—What’s going on?!

Hearing that, I froze, completely at a loss for how to respond.

"...Uh... Nii-chan I..." I could only twitch my eye awkwardly, scrambling for a reasonable excuse.

In my original world, I rarely needed excuses. Now, I had no idea how to make one up...

—Almighty kami-sama, turning me into a guy was bad enough—why didn’t you give me this world’s memories too?!

"Whatever. I’m probably still dreaming..." My sister rubbed her eyes and turned back to her room.

Watching her leave, I sighed in relief and wiped the cold sweat from my brow.

Come to think of it... where did Kamidou Chiyo, the original owner of this body, go?

...Could it be... we swapped bodies?!

...

The more I thought about it, the more likely it seemed.

Honestly, I felt a bit guilty. That guy was stuck living my terrifying life now.

"Ohayou~ Chiyo."

A greeting suddenly pulled me back to reality from behind.

I turned around to find a blank-faced, unfamiliar girl standing there.

—Ahhh! Who is she?! I don’t recognize her at all!!! Why’s this stranger living in my house?!

"...Uh... uh... ohayou..."

I had no clue how to talk to her. For over a decade, I’d mostly stayed holed up in the Sacred Shrine except for school.

Even at school, no one could stay sane around me—let alone chat.

And whatever I asked for, people obeyed instantly. I never had to think.

But now, as a guy, I seemed to have lost that special trait.

Yet... I’d completely forgotten how to talk to anyone!!

—This is seriously bad!!

I screamed in my head. Who was she? What was her connection to Kamidou Chiyo? I had no idea what to say!!

Maybe... she was a distant relative’s kid.

"Why do you seem so different from usual?"

The strange girl suddenly wore a faintly puzzled expression.

Not knowing how to react, I just glared back with a stiff face.

In my awkwardness, my eyes flicked to her flat chest—and a weird sense of pride flared up.

Ugh, that flat chest is hopeless! My boobs were perfect, after all!

Chotto matte!! Why am I proud of that?! I’m a guy now!! Ditch the girl mindset already!!

But... habits from over ten years aren’t that easy to drop.

"Guess you’re back to normal..."

After sizing me up, the girl returned to her emotionless face and headed straight for the bathroom.

What "back to normal"? That’s so weird...

Feeling utterly speechless, I rushed back to my room on the second floor.

I need to calm down first. Better find some info about myself in this world...

Sitting at my desk, I rummaged through a drawer and pulled out a suspicious black notebook.

It was password-locked. After thinking for a moment, I tried my birthday—and it clicked open instantly.

Heh, just like me—using your birthdate as a password.

But when I saw the pages crammed with girls’ personal details and creepy "romance strategies," my face twisted in disgust.

—So Kamidou Chiyo, the original owner of this body... really was a total scumbag!!!