Z5-C5

 is a group within Zero Project. The theme of the group is K-Pop.

The first line-up was announced on July 10, 2021.

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

The second line-up was announced on August 14, 2022.

Current Members
None currently

Former Members

 * Ponto Pero (先斗ぺろ) (Founding member; promoted August 21, 2021)
 * Imada Miri (今田未莉) (Founding member; Graduated November 5, 2021)
 * Saho. (Founding member; Graduated November 5, 2021)
 * MIWOO (ミウ) (Joined September 26, 2021 ; Graduated November 5, 2021)
 * Sekine Yuma (関根夢真) (Founding member; Graduated November 7, 2021)
 * Maishi Makoto (舞石まこと) (Founding member; Graduated November 5, 2021)
 * Shirogami Mifuyu (白神魅冬) (Joined August 14, 2022)
 * Nanase (七瀬) (Joined August 14, 2022)
 * Mafuyu (真冬) (Joined August 14, 2022)