"Osu! Tatakae! Ouendan (押忍！闘え！応援団, Osu! Tatakae! Ōendan?, lit. "Hey! Fight! Cheer Squad"), sometimes referred to as simply Ouendan, is a rhythm video game developed by iNiS and published by Nintendo for the Nintendo DS handheld game console in 2005, for release only in Japan. Ouendan stars a cheer squad rhythmically cheering for various troubled people."
Source: Wikipedia, "Osu!_Tatakae!_Ouendan," available under the CC-BY-SA License.