| Kokoro Biidama | |
| Cover: | kokorobiidama.jpg |
| Type: | single |
| Artist: | Rythem |
| Album: | Mugen Factory |
| B-Side: | M, Negai (Asayake ver.) |
| Released: | March 1, 2006 |
| Genre: | Pop |
| Label: | Sony Music Japan |
| Prev Title: | '20 Tsubu no Kokoro' |
| Prev Year: | 2006 |
| Next Title: | 'Negai' |
| Next Year: | 2006 |
is the J-pop duo Rythem's ninth single.[1] It was released on March 1, 2006 under Sony Music Entertainment Japan label.[2] The title track was used as the sixth ending theme for the anime Yakitate!! Japan making this their second and last tie-in with the said anime series. This single peaked the #53 spot in the Oricon weekly charts.
The item's stock number is AICL-1732.
Composition/Lyrics: Rythem
Arrangement: CHOKKAKU
Composition: Kaori Kishitani
Lyrics: Kyoko Tomita
Original singer: Princess Princess