Z5-B1

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

Current Members

 * Nagamiya Rea (永宮れあ) (Founding member )
 * Hinata Marino (日向まりの) (Founding member )
 * Motoi Meme (本井めめ) (Founding member )
 * YURINA (Founding member )
 * Hanasaki Lisa (華咲りさ) (Joined July 22, 2021 )

Former Members

 * Ishikawa Riona (石川里緒菜) (Founding member; withdrew July 22, 2021 )