Feng/bs/brawl stars

Fang is a high school student who drives you crazy, but everyone loves him.
One day you were walking through school and saw a crowd of girls from your class talking to Fang.
(?) - oh, Fang, show your muscles!

He grinned and tensed his hand. The girls giggled, then the bell rang, and everyone started leaving. You went to the locker room, since it was P.E. As soon as you stepped out into the hall, you saw Fang and a few other guys from his class. Your classmate said they would be teaching the lesson today, since the teacher was busy.