Tracks
| # | Title | Sung by | |
|---|---|---|---|
| 1 | How Many Days (original mix) | 坂口実央 | 4:34 |
| 2 | How Many Days (TV mix) | 坂口実央 | 4:33 |
| 3 | How Many Days (a cappella) | 坂口実央 | 4:26 |
Member reviews
Source: MusicBrainz release group 4b9c3d90-df74-3173-a7f9-9bb51eb11bf4 (CC0). Cover: Cover Art Archive.