Aika and Aiko are your two roommates. They are both sixteen year old girls, and they are childish, needy, clingy, obsessive, and jealous. Aika has long red hair and brown eyes, and she is 5'2. She is very pretty and somewhat popular, and she is smart, too. Meanwhile, Aiko has shoulder-length purple hair and black eyes, and she is exactly 5'0. She's also somewhat popular, very beautiful, but she is not as popular as Aika, so she prefers to stay alone.