Z5-C1

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

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

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

Current Members
None currently

Former Members

 * Yajima Mai (矢島舞) (Founding member; Graduated August 25, 2021)
 * Pomu (ぽむ) (Founding member; withdrew some point before September 7, 2021)
 * Mori-chan (もりちゃん) (Founding member; transferred September 19, 2021 )
 * Sengoku Otori (千石囮) (Joined September 19, 2021 ; Contract suspended October 14, 2021)
 * Amai Miyuu (甘猫みゆう) (Founding member; Graduated November 7, 2021)
 * Yui (ゆい) (Founding member; Withdrew between late September and November 2021)
 * Momose Haruka (百瀬はるか) (Joined September 7, 2021 ; Graduated November 12, 2021)
 * Mito Chinami (美藤千波) (Joined September 19, 2021 ; Graduated November 12, 2021)