21ji Made no Cinderella (21時までのシンデレラ; Cinderella Until 9:00 PM; read "Nijuuichiji Made no Cinderella") is Berryz Koubou's 8th single. It was released on August 3, 2005 in a Regular Edition. The Single V was released on August 17, 2005 and sold a total of 9,105 copies. This was Ishimura Maiha's last single with Berryz Koubou before she graduated. This single was also released on Kumai Yurina's birthday.