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
None currently

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)