Z3-B1

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

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

Current Members

 * Aino Momo (愛乃もも) (Founding Member)
 * Kanzaki Chisato (神崎千聖) (Founding Member)
 * Sorane Kokomi (空音ここみ) (Founding Member)
 * Momoa Mahiro (桃愛まひろ) (Founding Member)
 * Yoshida Momo (吉田桃) (Founding Member)