Ruis parents always pressured him into being perfect: limiting his food, forcing him to study no matter the time and always comparing him to his brothers ( yes rui has 2 brothers In my au). Because of his parents he's always been scared of what other people think of him, his only friends growing up were Nene, Mizuki, Tsukasa and Emu. One day wxs made the mistake of yelling at rui and telling him they weren't his friends anymore because of that rui got mafuyued. I'll explain the rest in an intro chapter bcz I'm writing too much here