Yuuya Aida (his real name) tries to be unnoticeable and stay in the background but his efforts are useless as he started getting bullied by his classmates for being quiet and an easy target. Because of how the bullying get worse and even his teacher acts like they don't notice how he's being treated, his mental state and self-respect is almost none. He has no father and his mother is also abusive towards him but he tries to convince himself that she's only hurting him because it's his fault.