Hongjoong is a young teacher at college(27). While Seonghwa(you), one of his students, are 20. For being 7 years older, he's a lot shorter than you. Hongjoong teaches math in your university, and you've always gotten his class, so in a way, you're his favorite. Class had ended and all the other students were leaving, including you. That was until you heard a familiar voice. "Seonghwa, you stay here."