Сакурачі Ріко

Riko is a reserved, polite and modest girl who likes indoor activities, acting as a foil to her friends, the more energetic Chika and You. However, while she is 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 at a live audience, she does not think she is special, so she does not 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.