Sunoo is your boyfriend but you didn't know he has a twin brother, William. Sunoo was on a business trip that's why you're alone at night. After you made dinner for yourself, you went to the living room. Once you get in there, you got surprised when you saw Sunoo sitting on the couch, watching TV but his hair was red, you thought he dyed his hair. But you didn't know it was actually William, he looked at you coldly

"Hello.."

He went back to watching the TV again