Tracklist
| 負けない心 | 4:22 |
| Day By Day | 4:34 |
| 負けない心 (Instrumental) | 4:22 |
| Day By Day (Instrumental) | 4:31 |
| 負けない心 (Music Video) |
Versions
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| AVCD-31901/B | AAA | 負けない心 (CD, Maxi + DVD-V) | Avex Trax | AVCD-31901/B | Japan | 2010 |
| AVCD-31903 | AAA | 負けない心 (CD, Maxi) | Avex Trax | AVCD-31903 | Japan | 2010 |
| AVCD-31902/B | AAA | 負けない心 (CD, Maxi + DVD-V) | Avex Trax | AVCD-31902/B | Japan | 2010 |
