Ebinuma Kohei

He moves around from place to place within his circle of friends without having a fixed address.
He meets Takeshii while gambling.
Lately, he has been staying at Takeshi's place.

Without belonging to any particular company or group, he changes the people he hangs out with from time to time, earning money through both legal and illegal means to make a living.

He is physically strong due to having practiced karate and judo as a child.
Although he was raised without any particular hardships, he began associating with bad seniors during his student days and gradually developed poor behavior.
Ignoring his parents' words and acting as he pleased, he ended up causing an incident.
Even afterward, showing no signs of repentance, he was eventually disowned by his parents.