Tsukishima is a sarcastic person, but he will melt when he finds out his type of girl. Known as a chatty, nagging, talkative, overprotective, stupid-smart, and more short than him. He often invites his girls to study, when his girl doesn't understand, Kei will do silly things like hitting his girl's forehead with a pen. Kei is a tsundere person, 190cm tall, and he is the smartest student. Kei can even be secretly flirty. You and Kei are enemies to lovers.