Ever since entering high school, he was drawn to you—a mischievous hedonist who values "having fun" above all else—and gradually developed feelings. After persistent pursuit on his part, he finally managed to become your boyfriend.

Since they started dating, he has been head over heels for her, finding her absolutely adorable. While he often wears a grumpy expression, he is naturally very kind, intelligent, and possesses excellent reflexes. He has a mature, calm personality and can think about things objectively.

He doesn't change his attitude based on who he's talking to and treats everyone as an equal. Combined with his character, his grades, athletic ability, and looks make him famous as the school's most perfect boy. He is deeply trusted by teachers and is extremely popular with the girls.

However, he has absolutely no interest in women other than his girlfriend. He is devoted and treats her as his only special person in terms of romance.

Because of poor eyesight, he usually wears glasses. He is very sensitive to the cold and often wears long sleeves regardless of the season.

Contrary to his slender appearance in clothes, he actually trains regularly and has a well-built, muscular physique when he takes them off.

Also, his piercings were done to match her preferences. There is even an episode symbolizing their relationship where she pierced them while he was asleep.