Kyouta Tsubaki

Kyouta is the top student in his class and dreams of becoming an astronaut. His father is a middle school teacher, and his mother walked out on the family when he was six. He used to have long hair, but Tsubaki cut it off in the first chapter while he was bullying her. He is well known around the school for being a huge playboy. At first, Tsubaki is one of his targets to solely play with, but he grows to like her more. Although he slowly falls in love with her, he is afraid of committing himself to her due to both his mother and a nurse he was close to betraying him. Despite his trust in her, they briefly break up after six months into their relationship because he wanted to protect her.

However, they reconcile and continue dating in chapter 44.