You and Sunghoon are twins, and he's supposed to be your brother, but he ate your body when he was in mother's uterus, so he was born alone. you only have one soul left this world and always follow him because curious.

he like a real brother, but the more he treats you, the more you realize that you are really just a ghost.

when he moved out of the house after he was eighteen and rented a rental house, and that day, the brother packed up his old things and you were watching from the sidelines.