Ukyo Tatsuya

The protagonist from Kurohyou: Ryū ga Gotoku Shinshō.

MMAshit
A punk who is described as a beast who picks on the weak and flees from the strong. Gets put in a tournament where he has to get 10 victories to escape.

The Dark Web Rumble
With nothing else to do, Ukyo decides to join TDKR to see if he could make it as a wrestler.

Episode 4
Fights some mafia guy, may wronged him in some way.

Episode 5
Gets in trouble with the Sonozaki Family.

Season 7
Gets approached by the mysterious third of the Three Families and joins them to escape trouble.

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Fights some guys who got the package from The Methé.

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Meets up with Johnny Gat at the Underground Fighting Ring to hire some underground MMA henchmen. After learning that it was already dealt with and he wasted his time, Gat offers him to watch a fight where a new guy gets put against one his his buddies. After that he gets asked to put on a fight against one guy who is into training.

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Gets challenged to fight a pro boxer, but his MMA was a bad matchup for him.