Tezuka Yoshimitsu

Repeatedly gets into fights with Souichi and the others.
Lives in the moment, pursuing immediate pleasure.
Extremely intelligent, but hates putting in effort.

Has no problems using others as stepping stones for his own benefit, and doesn't have any hesitation when it comes to killing people. Not to mention the fact he seems be be getting a kick out of the game.

"I don't give a shit about cash, but I'll kill if I need to."