Also known as: Yashiro Nanano (匕野 社), Ayako, Haruko Ueda (上田 はるこ), Tomoko Ishibashi (石橋朋子)

Birth and former stage name: Takahashi Chiaki (高橋 千晶)

Hometown: Yokohama, Kanagawa Prefecture, Japan
Blood Type: O

A member of Aice⁵ with:
- Yui Horie (堀江 由衣)
- Akemi Kanda (神田 朱未)
- Masumi Asano (浅野 真澄)
- Madoka Kimura (木村 まどか)

Twitter: @chiaking58
Instagram: juicy.chiaking