Pyocopyoco Ultra (ピョコピョコ ウルトラ; Bouncy Bouncy Ultra) is the 48th Single of Morning Musume. The single was going to be released on December 21, 2011, but was postponed to January 25, 2012. This single marks the debut of the 10th Generation. This is also currently Morning Musume's lowest selling single. This song was used as the opening theme for Suugaku♥Joshi Gakuen.