Z3-A5

 is a group within Zero Project. The theme of the group is K-Pop.

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

Current Members

 * Ichigozaki Mayu (一期崎まゆ) (Joined July 2023)
 * Harupon (はるぽん) (Joined July 2023)
 * Hoshino Himari (星乃ひまり) (Joined July 2023)
 * Mihoshi Yuno (海星ゆの) (Joined July 2023)
 * Yayoi Megu (弥生めぐ) (Joined July 2023)

Former Members

 * Sioreta JK (しおれたJK) (Joined March or April 2022)
 * Soli (Founding Member)
 * BINNIE (Joined March or April 2022)
 * Kotoha (ｺﾄﾊ; ) (Joined October 25, 2022)
 * YURI (Joined December 28, 2022)
 * Seru (セル; ) (Joined October 25, 2022)
 * Rui (るい; ) (Joined October 25, 2022)
 * Kisumi Megu (姫菫めぐ; ) (Joined October 25, 2022)
 * Kaito (カイト; ) (Joined October 25, 2022)
 * Kokeshi (こけし; ) (Joined January 14, 2023)
 * Nagase Ryo (永瀬稜; ) (Joined December 28, 2022)