Eita is the main character who aims to attend medical school after graduating from high school. He is very smart and always places at the top of the school exams. He has a strong distrust for love and romance because of his parents divorcing, finding new lovers, and abandoning him when he was in junior high school, thus calling himself "anti-romance". It is revealed that during his junior high school, he had teenage delusions, addressing himself as "Burning Fighting Fighter". However, his parents' divorce and Chiwa's accident caused him to abandon his delusions and reject romance, wanting to become a doctor to find a way to fully cure Chiwa's injury. Despite his teenage delusions being "gone", he shows some of them if he gets too emotional.