Niiyama Aoi

Shinobu's stepsister. Working as a newbie idol and attending high school at the same time, she lives in the same apartment with him. Because of her busy work as an idol, she doesn't come to school often. Despite that, she is able to spend her nightly time on watching TV programs. Sometimes she will easily get angry at Shinobu when he teases her.

Hobbies: Window-shopping
Favorite Food: Meat and potato stew (Nikujaga)