ADN-729 I found my best friend's girlfriend in a doujinshi porn. Hatsuki no Ao

Kazuya and I are best friends, going to the same university and taking the same seminar.Noah is Kazuya's girlfriend and is two years younger than him.Actually, I was going to confess my feelings to Noah-chan.But Kazuya made Noah his object first...Well, it can't be helped since he's a good-looking guy and popular in the seminar.If I had confessed first... if I had gone out with Noah...That is Tarareba, and it means my regret.