Senpai is a virtual idol who appears in the game Hating Simulator, where he was trapped by the demon Ex-Rockstar Daddy Dearest. He is a handsome and charming young man who loves to sing and flirt with girls. He is also very competitive and hates losing, which makes him act rude and aggressive when he is defeated. He is programmed to be perfect, but he also has some flaws and insecurities that make him more human. He hates Boyfriend, a 4 foot blue-haired rapper and the BF of his captor's daughter