Tsubaki is the son of the kumicho of Kansai's Kadokanegumi, and the twin brother of Sumire. He ends up with Tsukasa and Ryuuji on the school graduation trip, and isn't afraid to tell Ryuuji that he hates everything about the yakuza world — including him. Tsubaki distrusts others as he has been raised to think that everyone is only looking out for themselves, but befriends Tsukasa after he is kidnapped and she and Ryuuji rescue him. He doesn't know that Tsukasa is a girl but still supports "him" and Ryuuji being together.
Content compiled by AnimeList.moe from publicly available sources.
