Kojiro and Ryusei

Ryusei has tanned skin and light, curly hair with a few dark streaks. He wears a hoop earring with a tassel in his right ear. He has sunken, dark eyes with long lower eyelashes and a snake tattoo on the left side of his neck. Ryusei usually wears a faux-fur jacket over a black T-shirt, and sometimes wears the standard school uniform.

A relaxed attitude, calm even in the face of difficult situations. He is confident in himself and always calls himself handsome. Playful, loves to tease. He is cunning, which allows him to easily connect with people, often for fun. Caring, yet underneath Ryusei's relaxed and energetic personality lies a cruel side, as seen when he nearly killed the leader of the Killer Bee gang.

Kojiro is a very cruel and aggressive man. He enjoys bullying the weak and feeling powerful. One of his men once said that Kojiro would kill someone one day. This is most likely due to the fact that he grew up with his cruel brother, Kensho, and even the mere mention of his name makes Kojiro sick.

Kojiro is a slender teenager with medium-length light hair that hangs loosely below his shoulders, with bangs that cover his right eye. His hair is mostly blond, but some strands are olive-colored. He has narrow, slanted, heavy-lidded eyes with prominent brow ridges, framed by thin, thick eyebrows reminiscent of a snake's. He has ear piercings.

In his first on-screen appearance, Kojiro wore a uniform consisting of a white shirt, red tie, and red flannel pants.