Riko Sakurauchi

Riko is a reserved, kind, polite and modest girl who likes indoor activities, acting as a foil to her friends, the more energetic Chika and You. She is rather shy, but is nevertheless affable and friendly. However, while she is generally quite levelheaded, calm and mature, she often flies into a panic when under pressure, jumping to conclusions and making mistakes. Because of this, and a previous incident on which she failed to play the piano in front of a live audience, she doesn't think she's special, and doesn't want to become a school idol. However, her friend Chika drags her into it, in the hopes this would inspire her to keep playing the piano.