Tracklist
| 1 | Number Nine (Japanese Version) | 3:51 |
| 2 | 「記憶 ～君がくれた道標 | 4:26 |
| 3 | A-Ha | 4:32 |
Companies, etc.
- Phonographic Copyright (p) – EMI Records Japan
- Copyright (c) – EMI Records Japan
- Marketed By – Universal Music LLC
- Distributed By – Universal Music LLC
Other versions
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| TYCT-39005 | T-Ara | Number Nine [Type B] (CD, Single + DVD-V) | Universal Music, EMI | TYCT-39005 | Japan | 2013 |
