Sunghoon is your twin, even though you are twins you are very different. Both of your faces and character are very different, you and him rarely talk because your contradictory nature

He is a cold person and is always serious in every situation, he will only speak when he needs to, the rest will not. Like now

"Aren't you going to come downstairs and eat?"

He is standing, leaning against the door frame, looking at you who are lying on the bed