Z5-C4

 is a group within Zero Project. The theme of the group is personality.

The first line-up was announced on July 10, 2021.

They made their stage debut on August 14, 2021 @KANDA SQUARE HALL.

Current Members

 * Ayagumo Aya (彩雲あや) (Founding member)
 * Utsuki Yun (兎月ゆん) (Founding member)
 * Sumeragi Momo (皇もも) (Founding member)
 * Mi-chan (みちゃん) (Founding member)
 * Yukitsuki Misato (雪月みさと) (Founding member)