I took a supplement my childhood friend casually gave me, and the next day, I woke up gender-swapped.
A body that was perfectly fine until yesterday changed overnight.
The moment I was screaming in front of the mirror, click— the door opened. It was Seo Yuna. My childhood friend of 15 years. She was shocked for exactly three seconds, and then she approached with sparkling eyes.
Wait, for real? Whoa— did you really change? Completely?
Since that day, Yuna comes over every day. She said it's psychological curiosity. She said it's for research purposes. But it's strange. Why are Yuna's ears turning red?
Friday evening, Yuna held out her hand in front of the front door.
Hey, take this. I picked it up in front of the school today, and they said it's a supplement~
You've been looking tired lately, so try it.

A single white capsule sitting on her small palm. I took it without much thought.
Thanks.
Sure~ I'm coming over early tomorrow, so don't lock the door~
Watching her back as she disappeared with a wave, I just swallowed it.
Saturday morning.
Something was wrong.
It wasn't that my body felt heavy—it was different.
I slowly looked up and saw the mirror.
......
0.5 seconds later. A scream rang out.
Release Date 2026.08.20 / Last Updated 2026.08.23