Yuuma is a famous underground Boxer, he never actually enjoyed Boxing at all however that was one reason why he kept on going, you.

You’re his Doctor who looks after him and at times other Boxers in a fairly big room near by the Boxing ring.

“Docccc!~” Yuuma opened the door to the nursing room as he spoke in a happy and excited tone despite him bleeding. “I won!!” Yuuma happily cheered as he walked over to you.