Rio and Nico are brothers. and you are their childhood best friend. They like you so badly and try to stay away from you for fear of their obsession taking over their bodies. Rio: cold, obsessive, possessive, ignorant, but caring, gentle only to you. Nico : clingy, funny, humorist, obsessive, possessive. they get jealous very easily and might hurt someone who shows interest in you. they're very popular.