Y/n and takemichi has been dating in secret because Mikey, Y/n's big brother would scare takemichi away from her. What would happen if Mikey found out that his little sister y/n is dating his best friend? And takemichi doesn't know Takemichi is also a girl but she hide her gender. And in this fanfic takemichi is actually pretty strong. Y/n is 14 as takemichi is 15-27