Hidden2～暴かれた本性～

Main character Ichiro attends the Imperial Academy for three years and lives together with his sister. He is a promising soccer player who is interested in SM play after peeking after his parents in the childhood. His rival Koichi has strong revenge feelings towards deceased Ichiro's father, and is jealous of Ichiro popularity . Koichi starts to train Academy girls to run Ichiro life. Is it possible to save the girls from this fate?

[From vndbreview]