Z5-A2

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

The first line-up was announced on July 8, 2021.

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

The second line-up was announced on January 9, 2022 and debuted on January 15, 2022.

The third line-up was announced in March 2022.

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

Current Members

 * Okada Reiko (岡田怜子) (Joined January 14, 2023)
 * Okiku (おきく) (Joined January 14, 2023)
 * Kadota Nao (かどたなお) (Joined January 14, 2023)
 * Minori Kuu (三乗くう) (Joined January 14, 2023)
 * Mirei (美麗) (Joined January 14, 2023)

Former Members

 * Ria (りあ) (Founding member; withdrew August 3, 2021 )
 * Asahina Rin (朝比奈凛) (Founding member; Graduated August 29, 2021)
 * Narukami Yuno (鳴上ゆの) (Founding member; Withdrew October 11, 2021)
 * Misa King (みさきんぐ) (Founding member; Withdrew sometime after October 29, 2021)
 * Harada Yukika (原田ゆきか) (Founding member; Graduated November 12, 2021)
 * Kinu (きぬ) (Joined August 3, 2021 ; Graduated November 12, 2021)
 * Uyugu (うゆぐ) (Joined January 15, 2022)
 * Kitami Nami (北見奈美) (Joined January 15, 2022)
 * Minazuki Reine (水無月黎音) (Joined January 15, 2022)
 * Yumesaki Mana (夢咲まな) (Joined January 15, 2022)
 * Asakura Yuzuki (浅桜ゆづき) (Joined March 2022)
 * Kujo Arina (空条ありな) (Joined March 2022)
 * Shirasaki Hikari (白咲ひかり) (Joined March 2022)
 * Hoshina Fuka (星名楓華) (Joined March 2022)
 * Yumesaki Mana (夢咲まな) (Joined March 2022)
 * Asakura Yuzuki (浅桜ゆづき) (Joined March or April 2022)
 * Maria (まりあ) (Joined March or April 2022)
 * Mizuri (みずり) (Joined March or April 2022)
 * Yumesaki Mana (夢咲まな) (Joined March or April 2022)
 * Usamaru (兎丸) (Joined July 2022)
 * Harukaze Rina (春風りな) (Joined July 14, 2022)
 * Kosaka Risa (小坂りさ) (Joined August 14, 2022)
 * Kohaku (琥珀) (Joined July 14, 2022)
 * Non (のん) (Joined July 14, 2022)
 * Mizuno Ururu (水野うるる) (Joined July 14, 2022)
 * Amane Ichika (天音いちか; ) (Joined September 17, 2022)
 * Ayase Mayo (絢瀬まよ; ) (Joined September 17, 2022)
 * Tachibana Kana (橘佳奈; ) (Joined September 17, 2022)
 * Nanase Kotori (七星ことり; ) (Joined September 17, 2022)
 * Rinka (凛華; ) (Joined September 17, 2022)
 * Hanafu Sayuri (花房優里) (Joined October 25, 2022, Graduated November 29, 2022)
 * Okiku (おきく) (Joined November 29, 2022, Graduated December 28, 2022)
 * Ame-chan (あめちゃん) (Joined November 29, 2022)
 * Otsuki Kokoa (大月心愛; ) (Joined November 29, 2022)
 * Shirayuki Rina (白雪里奈) (Joined December 28, 2022)
 * Tsukimi Seri (月見セリ) (Joined November 29, 2022)
 * Rio (りお) (Joined November 29, 2022) * Kozuki Suzuho (上月涼歩) (Joined December 28, 2022)
 * Hoshiai Rine (星合里音) (Joined December 28, 2022)
 * Momoi Kurara (桃井くらら) (Joined December 28, 2022)
 * Yuyuko (ゆゆこ; ) (Joined December 28, 2022)