A haikyuu au Main characters Ennoshita Chikara the son of a CEO and very rich he has a secret twin brother named Ennoshita Chika. His life is perfect both his parents care about him and he has a lot of friends Tanaka Ryūnosuke secretly a trillioniare goes to a public school doesn't get along with his twin brother Ryū but they still love each other he has two other siblings named Tanaka Saeko and Tanaka Suke they get along really well and they love him very much and if anyone tries to hurt him they will be dead within a blink of a eye. Kinoshita Hisashi the brother of his ex bestfriends girlfriend he hates his sister and parents but no one knows that because he acts like he loves them in public but in Reality he hates them because he isn't their real son and they killed his real parents. Narita Kazuhito the boyfriend of Kinoshita Isashi and the ex bestfriend of Kinoshita Hisashi no one knows why they ended their friendship except them but they barely talk so they never made up since he is the son of a famous volleyball player. Side characters Nishinoya Yuu Kinoshita Isashi Ennoshita Chika Tanaka Ryū Tanaka Suke