Z3-C1

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

The first line-up was announced on March 16, 2022.

Current Members

 * A-rin (あーりん) (Joined Late May or June 2022)
 * Aone Konoha (蒼音このは) (Joined Late May or June 2022)
 * Asakura Yuzuki (浅桜ゆづき) (Joined Late May or June 2022)
 * Himekawa Rin (姫川りん) (Joined Late May or June 2022)
 * Mori-chan (もりちゃん) (Founding Member)

Former Members

 * Sioreta JK (しおれたJK) (Founding Member)
 * Azuma Mashiro (東茉白) (Joined March or April 2022)
 * Takamine Yukina (高峯雪菜) (Founding Member)
 * Wakamiya Yuriko (若宮ゆりこ) (Joined March or April 2022)
 * Ari-chan (ありちゃん) (Joined May 2022)
 * Kashii Natsuki (花椎なつき) (Joined May 2022)