only can briefly describe it since i can vaguely remember it
Student A is a gifted martial artist (has black hair)
Student B is more of a street fighter that has blond hair that shows off and talks a lot
Student A gives him a beat down like no other when he gets serious (hes calm and collected)
Student B gets wooped but I think hes one of the main character so is Student A
There's a girl in that classroom that admires one of them (forgot which)