Z3-B4

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

The first line-up was announced in September 2022.

Current Members

 * Kanzaki Chisato (神崎千聖) (Founding Member)
 * Kumayuri (くまゆり) (Founding Member)
 * Sawada Nana (澤田なな) (Founding Member)
 * Yayoi Megu (弥生めぐ) (Founding Member)