Mihama Shizuru

Mihama Shizuru is an idol who was very popular almost a decade ago. She debuted while she was still a teenager, and she soon exploded in popularity. Shizuru sang and danced as a solo act until she was almost thirty, by which point she decided to bow out to let other, younger idols shine.

Shizuru has no particular interest in making waves in the world of idols, having already proved herself. She seems rather interested in Ayu, however. Could she be plotting something...?