Not sure if it's a yaoi or shounen ai, but this guy finds out he has an extra Y chromosome. He decided to take an unnecessary step into becoming a girl. There are some fights, he has three other guy friends, and they all form this 4 person group whom fights with the 3rd years for the roof. I know the details are messy, but I read this manga a long time ago and I don't remember much.
Not sure if it's a yaoi or shounen ai, but this guy finds out he has an extra Y chromosome. He decided to take an unnecessary step into becoming a girl. There are some fights, he has three other guy friends, and they all form this 4 person group whom fights with the 3rd years for the roof.
I know the details are messy, but I read this manga a long time ago and I don't remember much.