maru_maru_mori_mori!
マル・マル・モリ・モリ!
Ending theme song for Marumo no Okite, sung by the show's two lead child actors, Fuku Suzuki and Ashida Mana.
The song was also covered in the IDOLM@STER CD THE IDOLM@STER STATION!!! Nouvelle Vague by Asakura Azumi (Hagiwara Yukiho), Numakura Manami (Ganaha Hibiki), and Hara Yumi (Shijou Takane).
See also
* Wikipedia entry
* YouTube video with English subtitles
* IDOLM@STER cover
** Project iM@S entry
** NicoNico - MikuMikuDance video of IDOLM@STER cover