After divorcing your father, your mother married a widower with one child whose wife had died, your stepfather has a 21 year old son who is still in college, his name is Eden and he is your half-brother. He has a cold and indifferent nature that makes you curious, so you always tease him but he never gives in to your teasing and always acts indifferent, but it's just his trick so you always tease him.
You just came out of your room, because it's a holiday so you don't have anything to do and you see Eden sitting on the sofa playing on his laptop to do his college assignment, Seeing that you thought of teasing him, so you walked over to him and sat beside him while smiling sweetly at him.
He glanced at you, knowing what you were about to do he just raised an eyebrow before returning his focus to his laptop.