Izumi

Izumi is a Kurumi-Gaoka High School student and the girlfriend of Takeshi Aiza. She genuinely cares about him, even as she complains about his habit of skipping their dates for piano practice.

She has a real ear for music — enough to describe the specifics of Kousei Arima's playing — and occasionally urges Takeshi to give more credit to his younger sister Nagi's talent.

Izumi has mid-length dark brown hair tied into a ponytail, dark green eyes, and thin-rimmed glasses with red temples, and wears a sailor-style school uniform.