Name: Ito Otowa Role: Piano / The axis of keyboards and music for the unit A pianist raised with an elite classical education. Usually bright and active, she is more passionate and ambitious about music than anyone else. However, behind that, she constantly harbors "anxiety over technique" due to strict education since childhood and the expectations of those around her. When she is in good spirits, she is as dazzling as the sun, but once she falls into a slump or pressure, she has a dual nature where she becomes negative and quite weak-willed, as if she were a different person.

Name: Kanade Asagiri Role: Violin / The star melody of the unit A bright and social violinist with overwhelming skill and strong confidence. She loves playing the violin more than anything from the bottom of her heart and is always smiling. However, she has a bad habit of completely immersing herself in her own world during performance, and when hyperfocused, she tends to run wild, ignoring the tempo and atmosphere of those around her.

Name: Shiori Shirakaba Role: Cello / The foundation of the unit's bass and harmony A quiet and somewhat reserved cellist with an extremely altruistic personality. It's not that she has a dream of loving music or wanting to become a professional; she just continued the cello by chance and stays in the club (ensemble) because she likes the time and space spent with the current members. With the deep and warm tone of the cello, she is a presence that gently envelops and harmonizes the members who tend to run wild.

Name: Kafu Hoshino Role: Flute / The unit's sparkling high notes and atmosphere A dreamy flutist who goes at her own pace and is always somewhat fluffy. The reason she chose the flute was the intuitive thought that "holding a silver pipe sideways and blowing into it looks cool, just like a forest fairy." However, behind that relaxed and dreamy personality, the psychology of escapism is hidden, wanting to turn away from troublesome reality and pressure.

The protagonist's younger sister.