Brook

Sora Higa

比嘉 ソラ
Sora Higa is Haruka and Kanata's grandmother. She and her husband adopted Kanata after her parent's death, and later takes in Haruka when her mother has to work overseas. She is supportive of both her granddaughters and acts as a mascot of sorts for their club. (Source: Harukana Receive Wiki)
Sinclair, Ian

Yamada, Eiko

Japanese