Ren'ai Revolution 21

" is the eleventh single of J-pop idol group Morning Musume and was released . It sold a total of 986,040 copies and peaked at number two on the Oricon Charts. The lead vocals of this single are Natsumi Abe and Maki Goto. This single also marks the last of Yuko Nakazawa before she graduated from Morning Musume to pursue her solo career within the Hello! Project.

Track listing

 * 1) "Renai Revolution 21"
 * 2) "Inspiration!"
 * 3) "Renai Revolution 21" (Instrumental)

Members at time of single

 * 1st generation: Yuko Nakazawa (last single), Kaori Iida, Natsumi Abe
 * 2nd generation: Kei Yasuda, Mari Yaguchi
 * 3rd generation: Maki Goto
 * 4th generation: Rika Ishikawa, Hitomi Yoshizawa, Nozomi Tsuji, Ai Kago