Haru is the sort of person who wears his heart on his sleeve. He's very open about himself and very accepting of everyone he meets; he hates lies and secrets and that sort of thing. He doesn't go out of his way to tell everyone everything about himself, but he doesn't see the point in keeping things hidden, either. He's very talkative and doesn't always know when to shut up, but it's not like he goes out of his way to steamroll all over other people; he simply gets excited when he's talking about something he's passionate about, like soccer football and his family and the subjects he likes at school.