Z5-E1

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

The first line-up was announced on July 12, 2021.

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

The second line-up was announced on January 8, 2022 and debuted on January 9, 2022.

Current Members
None currently

Former Members

 * Kitamura Riho (北村りほ) (Founding member; withdrew July 19, 2021 )
 * Naase (なーせ) (Joined July 19, 2021 ; Left or graduated sometime in November 2021)
 * Shiozawa Yuka (塩澤優華) (Founding member; Withdrew or Graduated between October 5th and Late November 2021)
 * Kanzaki Yuuha (神崎ゆうは) (Founding member; Graduated November 7, 2021)
 * Sato (さと) (Founding member; Graduated November 7, 2021)
 * Sakuraba Niko (桜庭にこ) (Founding member; Graduated November 12, 2021)
 * Kurogane Mion (黒鐘魅音) (Joined January 8, 2022)
 * TOMONE (Joined January 8, 2022)
 * Maeda Tomoka (前田桃望歌) (Joined January 8, 2022)
 * Mimi (みみ) (Joined January 8, 2022)
 * Momose Riho (桃瀬凛歩) (Joined January 8, 2022)