Hoshi Sakuya

He is the boyfriend and senpai of Akeno and also Tsukumo's friend and classmate.

He loves very much his girlfriend, even if she's irritating sometimes ...

He's a guy who has a good background, he does not judge people about their appearance and he considers himself the first friend of Tsukumo ( which is true ).

He is the type not to get into trouble, but he draws to Tsukumo, spreading the rumor that his friend is the strongest, many offenders come to measure their strength against him.

It was he who spread the news of his rising in fame after defeating Torazou ( the current "Boss" ), renaming Tsukumo the "new Boss".