From Renta!:

Junichi believes that gender doesn't matter in a relationship and asks Ryo, his pal since kindergarten, if he'd like to try something different with him. But Ryo is a guy who likes things "normal", and there's no way that he would ever acknowledge such a thing. He's astounded by the way Junichi goes around doing whatever he feels like with the guys at school or wherever he may be, and tells Junichi that it isn't normal. Somehow, he ends up being challenged by Ryo, and... This work also contains "Two Wandering Stars", a love story about Akihiko, another friend they grew up with.