Z5-D4

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

Current Members

 * Ikeda Airu (いけだあいる) (Founding member )
 * Shuna Maru (しゅなまる) (Founding member )
 * Mashiro Mahiro (茉白まひろ) (Founding member )
 * Mizuki Nagito (水月凪叶) (Founding member )
 * Fujimiya Karen (藤宮かれん) (Joined July 19, 2021 )

Former Members

 * Mizukoshi Sae (水越早咲) (Founding member; withdrew July 19, 2021 )