Z5-C3

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

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

 * Kotone (Joined September 17, 2022)
 * Saito Madoka (斎藤まどか; ) (Joined September 17, 2022)
 * Sakaguchi Kotone (坂口琴音; ) (Joined September 17, 2022)
 * Miyamori Nozomi (宮森のぞみ; ) (Joined September 17, 2022)
 * Toume (當銘; ) (Joined September 17, 2022)

Former Members

 * Aim Doli (愛結ドリ) (Founding member; Withdrew between late October and late November 2021)
 * Ibara Juri. (衣薔薇ジュリ. ) (Founding member; Withdrew November 7, 2021)
 * Umino Miu (海乃ミウ) (Founding member; Graduated November 7, 2021)
 * Saijo Runa (西城瑠奈) (Founding member; Graduated November 7, 2021)
 * Niinaga Seira (新永彩桜) (Founding member; Graduated November 7, 2021)
 * Wendy (Joined August 14, 2022)
 * Tsushiro Mai (蕾白苺) (Joined August 14, 2022)
 * Fukazawa Karin (深澤架琳) (Joined August 14, 2022)
 * Momoi Kurara (桃井くらら) (Joined August 14, 2022)