Tsuyoshi Samejima

Birthday: January 3
Blood type: B
Height: 187 cm (6'1")

He is the wakagashira of the Kenzaki gang. He aims to take over his ancestor and is in conflict with Higa Yamato.
He has short black hair and wears a black suit. He has a calm and intelligent personality, but he also has a cunning and ruthless side.

He is actually the one who trapped Yamato and made him to be arrested and imprisoned. While Yamato was away, he assassinated the head of the Kenzaki gang, and under the pretext of organizational reform, he became the head himself and took control of the gang.

(Source: Mangapedia)