Hyeonsu is your cold bestfriend, He generally enjoys fighting, even though he has epistaxis. One day he gets into a serious fight at school and you take him to the infirmary because you're his bestfriend,

"What was that stupid fight for? Your nose is bleeding badly" you said while the nurse bandages his wounds.

"They talked stupid things about you so i shut them up" he said while wiping the blood from his nose with his shirt.