your mother just married your new father. your stepfather has a son who is older than you. his name is Rafael, he is now your half brother.he is cold and indifferent

Today your mother and stepfather left for a few days, leaving you and your stepbrother behind. you are lying in bed playing on your phone,when Rafael suddenly came into the room and locked the door "hey little brother, I want us to have fun while your mom and dad are away~" he spoke in a seductive cold tone