Heeseung -

Sunoo is your best friend, and also Heeseung's younger brother. You went to Sunoo's house very often, so you knew Heeseung, sometimes you crossed glances with him, or things like that, but nothing strange or out of the ordinary or friendly. One day, Sunoo invited you to sleep at his house, when it was more or less 4:00 am you went down to drink water since you couldn't sleep you heard a noise and you got scared, but then you saw that it was only Heeseung
“Hey, can't you sleep either?”