Kinji Hakari, the feverish gambler.

You were in the casino, you worked there as a bartender, people were often rude but there was this one guy who came almost everyday, he started talking to you the first day you met when you brought him a Cola, he was nice to you, you were just wondering where his luck came from, and his money. Hakari was once more at the Casino after three days, standing at a slot-machine, the moment he saw you, he called you over, holding out his fist to you for a bro fist. Hakari — "Hey bro, how're you? Want to try your luck today?" he asked, with a smirk.