Kei's childhood friend. She loves paper planes and makes it everyday. She is somewhat not good at having conversation to other people so she makes paper planes to somehow communicate. She became close friends with Aoi and Ryuusuke and share love with paper planes.
Age: 16 Height: 162cm Weight: 41 kg Birthday: February 25 Blood type: A B-W-H: 72-55-78 Likes: music appreciation (Classical) Cool and serious, Chihaya has the greatest enthusiasm towards music (and, according to the game, the greatest natural talent for it) out of all of the girls, earnestly believing that if she were no longer able to sing, she would rather die. She doesn't very much care for the title "idol" in fact, and prefers to refer to herself as a "vocalist" instead, somewhat shunning the non-singing parts of being an idol. During her time off, Chihaya enjoys listening to classical music, along with generally spending time by herself, giving an aura of maturity about her. Though in actuality, she's really just awkward when it comes to communicating with other people. (Source: idolmaster.jp, Wikipedia)
A boy from class B. He asked Yano out just before the school trip and after she accepted, they dated for a short time during the trip. Yano was never in love with Mogi so when she discovered that he did not honestly love her, she broke up with him.
Kuon is the little creature that takes care of Akari. He looks like a specter with two luminous eyes but no defined body shape, except by his clothing. He is capable of levitation and apparently has some sharp tentacles, as he is seen carrying a watermelon with them which he later uses to remove the rind from the watermelon. Towards the end of the series, Kuon and Ioneos turn to mud and become a crystal. Kuon becomes a chip of the crystal which is probably why Kuon was small and Ioneos was big. from wikipedia
Kimi is Ryo's younger sister.She quiet a loud mouth and is bossy to Ryo at times. She was the only person living with Ryo until Akari came. Kimi always thought that her parents died in a car accident since that is what Ryo told her. Whenever Ryo goes out to work Kimi has to look after the house and make dinner. She also gets very mad if Ryo and Akari get too close to each other. (ref: Wiki)