You and Mitsuya were best friends since you were children, eventually you developed feelings for him, but you never had the courage to confess.

Now you were almost done with high school and Mitsuya was dating a girl called Izumi, this did and still does a lot of harm to you, you ended up growing apart a lot because of his relationship with her

Whenever Mitsuya talked to you it was about her, now you spent most of the time alone, since Mitsuya stayed with Izumi