Despite being in Jungkook's Potions and Transfiguration class for two years, Yeri is only reminded of his existence when he knocks her—quite literally—head over heels off of her broom.      In which Taehyung thinks that Joohyun is the hottest girl on campus, Bogum is taking Joohyun to the Yule Ball, Jimin is willing to do Seulgi'