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

 * Aoi Iroha (蒼井彩葉) (Joined May 24, 2023)
 * Asahina Rie (朝比奈りえ) (Joined May 24, 2023)
 * Imaizumi An (今泉あん) (Joined May 24, 2023)
 * Shirai Haruna (白井はるな) (Joined May 24, 2023)
 * Terayama Mei (てらやまめい) (Joined May 24, 2023)

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)
 * 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)
 * Amano Mano (雨乃まの) (Joined October 25, 2022, Left Early November 2022)
 * Otonashi Shiro (音無シロ)
 * Kae (カエ)
 * Haruka (陽香)
 * Yamada (ヤマダ)
 * Yoi (宵)
 * Nanami Sasa (七海佐早) (Joined December 28, 2022)
 * Yume (ユメ)* Nanjo Sayuki (南城彩雪; ) (Joined December 28, 2022)
 * Inose Mikan (井ノ瀬実柑; ) (Joined January 14, 2023)
 * Asahina Ao (朝日奈青) (Joined December 28, 2022)
 * Yoshinaga Runa (吉長瑠奈; ) (Joined January 14, 2023)
 * Ayase Aiko (彩世愛子) (Joined March 6, 2023; Left April 2023)
 * Kamino Saya (神乃さや; ) (Joined March 6, 2023)
 * Toge Shino (藤花紫乃; ) (Joined March 6, 2023)