Z4-B2

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

The first line-up was announced on November 20, 2021.

They made their stage debut on November 21, 2021 @Ebisu Garden Hall.

Current Members

 * Ueno Yura (上野結愛) (Joined May 24, 2023)
 * Shiraishi Oto (白石おと) (Joined July 2023)
 * Kurokawa Nao (黒川奈音) (Joined July 2023)
 * Nagakami Yua (永神ゆあ) (Joined July 2023)
 * Watanabe Miyu (渡辺心優) (Joined July 2023)

Former Members

 * Sakuma Nana (佐久間七菜) (Founding member)
 * Mashu (ましゅ) (Founding member)
 * Kashii Natsuki (花椎なつき) (Founding member)
 * Kanekawa Miyabi (金川雅) (Founding member)
 * Shirosaki Hitomi (白咲ひとみ) (Founding member)
 * Hikari (ひかり; ) (Joined November 29, 2022)
 * Himekami Ranno (姫上ランノ; ) (Joined November 29, 2022)
 * Misaki (みさき) (Joined November 29, 2022)
 * Miyamura Ten (宮村てん) (Joined November 29, 2022)
 * Nakajima Motomi (中嶋元美; ) (Joined November 29, 2022)
 * Tsushiro Mai (蕾白苺; ) (Joined December 28, 2022)
 * Tachibana Kana (橘佳奈; ) (Joined December 28, 2022)
 * Natsuno Suzuka (夏乃すずか; ) (Joined December 28, 2022)
 * Shiroma Aoi (白間葵衣; ) (Joined December 28, 2022)
 * Aisaka Yuuna (逢坂ゆうな; ) (Joined January 14, 2023)
 * Ichinose Kokoro (一ノ瀬こころ) (Joined March 6, 2023)
 * Oda Eri (織田えり) (Joined March 6, 2023)
 * SoLA (Joined March 6, 2023)
 * Nishina Akari (西奈あかり) (Joined March 6, 2023)
 * Fuefuki Neko (笛吹ねこ) (Joined March 6, 2023)
 * Kisaragi Suzume (如月すずめ) (Joined May 24, 2023)
 * Kosaka Sena (香坂星奈) (Joined June 7, 2023)
 * Tsukuyomi Yuzuki (月詠雪月) (Joined May 24, 2023)
 * yuki (Joined May 24, 2023)