Z3-A1

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

The first line-up was announced on March 16, 2022. During that time, other members were promoted to the group with the Z3 league officially ending on June 23, 2022.

The second line-up was announced on August 14, 2022.

Current Members

 * Aone Konoha (蒼音このは) (Joined August 14, 2022)
 * Kumayuri (くまゆり) (Joined August 14, 2022)
 * Shirano Koko (白埜ここ) (Joined August 14, 2022)
 * Himekawa Rin (姫川りん) (Joined August 14, 2022)
 * Yayoi Megu (弥生めぐ) (Joined August 14, 2022)

Former Members

 * Kashii Natsuki (花椎なつき) (Founding Member)
 * Nagase Ryo (永瀬稜) (Founding Member)
 * Sioreta JK (しおれたJK) (Joined May 2022)
 * POLLIE (Joined May 2022)
 * Mito Chinami (美藤千波) (Founding Member)
 * Azuma Mashiro (東茉白) (Joined May 2022)
 * Alyssa (Joined July 2022)
 * Ichiba Uno (市葉羽乃) (Joined July 2022)
 * Kisaki Riho (希咲りほ) (Joined May 2022)
 * Kururugi Yun (枢木ゆん) (Founding Member)
 * Shirahana Mariya (白花まりや) (Joined May 2022)
 * Hanai Rurina (花井瑠莉奈) (Joined May 2022)
 * Hanasaki Lisa (華咲りさ) (Founding Member)
 * Hinata Marino (日向まりの) (Joined July 2022)
 * Fujimiya Karen (藤宮かれん) (Joined May 2022)