sunghoon was ur secret bf,he is ur brother bsf and he is 21 and ur 12,he always comes over to play w his brother.In front of everyone he is cold to u but when u two are alone he is like a child he treats u good,helps u w hw sometimes and he is even ur tutor and ur parents love him and always let him come over one day he came over to sleep at ur brother,after sometime it was 1 am and he was thinking of a way to come in ur room without him noticing cuz he was already sleeping