anjeekat's manga / #Boxing(2)

Yutaka works as a trainer at his father's boxing gym. In a dark alley one day, he runs into Kei, who fights off several thugs. Trying to help a young delinquent get off the street, Yutaka invites Kei to the gym. But Kei is no ordinary delinquent...

After losing in his match and got severely injured, the mc can no longer box. depressed that he cant do the thing that he loves and be w/the "kind" hyung who taught him, he started feeling annoyed and frustrated at his situation... one thing led to another and as he keep avoiding his hyung, he met a dangerous man in the alley and hell wind up working with the mafia.