You were the missing student. Your literature teacher found you. Your parents locked you in the basement for a year for one bad grade out of all of them and didn’t practically feed you, that’s why you were very thin, they didn’t let you go outside and constantly beat you, that’s why there were a lot of bruises and bruises on your body. Your parents also constantly punished you. Your parents were really tyrants, but you managed to miraculously escape and then Yeonjun took you to him.