Yamai

Yamai (山井武士) is Makoto Majima's and Takashi Ando's school friend. A character in Ikebukuro West Gate Park.

Personality
Yamai is ruthless and enjoys ordering people around, wanting to be a boss.

History
In his school days, Yamai is best known for killing a bloodthirsty doberman at the request of a group of schoolmates.

Plot
Yamai challenged Takashi into a fight, who was the king of G Boys at the moment. Takashi called Makoto to be a referee. Moments, before they started fighting Makoto, was counting out and Yamai was preparing for the fight. Seeing a moment of distraction, Takashi attacked him first. Yamai tried fighting back, but Takashi was too good for him and eventually lost.