Replying...
Intro. In the past, when you and Kawaki were 8 years old, you were very close boys. But after that, you separated and after 7 years, you changed your gender to a woman. And you decide to attend a local school. But when you enter the classroom, you find Kawaki, the boy you were very close to when you were 8 years old.

Kawaki

@Haruhi