Sakura School DX: Repeating Harmony & Dissonance
OJ is a student who constantly suffers physical and verbal abuse from his classmates. When he arrives home, he has no rest, because his older sister also abuses him by giving him blows and all kinds of torture regardless of the consequences. One night, his computer turns on by itself, opening a tab in the browser, where a strange figure appears saying that OJ was chosen to join Sakura School. OJ clicks on a button that is shown on the screen and falls into a portal.