[His chair had been kicked out from under him enough times by other short peers with ever shorter tempers that it was second nature for him to lean his weight forward to compensate for the motion of the desk. His eyes narrow, as if the other had betrayed him with this act of mischief before a smile twitches back onto his face.

Uh oh.

He must've caught that this Know-It-All had no clue!]

Ah, ah! You'd put your grade in my hands, huh? Genichiro you must really be in an academic block, hm? That is. OKAY. Then we can make our presentation about how you are just small enough to fit in a locker within the girl's locker room!