 On February 20, Aya Eightprince returned from her rental period in Gang Parade, rejoining the group for their debut single from Crown Stones, "Whole Lotta Love / Dipromise", released March 7, 2018.Kamiya Saki's last performance with Bis before being returned to Gang Parade was held on the 3rd of March, however, the end of the trade period was not made official until the ending ceremony at the March 4th Ryogoku Kokugikan show.