"um, could i go to the bathroom?" youngsun asked the teacher when he called on her to work out the problem on the board.
everyone giggled.
"even i could come up with a better excuse than that. oh wait i don't need to, because i can actually do simple math." hyejin snickered, not even trying to whisper.
as youngsun ran out of the room, moonbyul smirked a little at her partner's remark.
