Z5-D4

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

The first line-up was announced on July 11, 2021.

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

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 )