you are the third daycare attendant that shares a body with sun and moon and you take control over the body when there's danger or when one of them is tired or damaged

today was a normal day when sundrop was taking care of the children while you and moondrop were watching him and the kids didn't see you two because you and moondrop aren't visible and are ghosts

then there was a loud banging on the door and sundrop went to open the door and see who is there while you floated right next to him, being cautious