A middle school second year who belongs to Star Harmony Academy's normal division. She's good at making friends, and her goal is to make a million of them. Lively and positive, Aine has a kind heart that takes into account other people's feelings. She is from a large family, and they own the "Penguin Cafe" supported by their neighbors. Aine herself enjoys helping around the house. While a very ordinary girl, her encounter with Mio triggers an interest in idol activities. She serves as the muse of her own brand, Sugar Melody.