I Alone Original Soundtrack
| Composed by | GaryAshiya |
| Published by | 株式会社トリクスタ |
| Release type | Film Score - Official Release |
| Format | 1 Digital - 17 tracks |
| Release date | January 30, 2015 |
| Duration | 00:41:08 |
| Genres |
| 1 | Bullet Armstrong (Youth Version)Hiroshi Ito (airstrike) | 03:49 |  |
| 2 | Living In IdlenessGaryAshiya | 01:14 | |
| 3 | Theme Music For YondaibunmeiGaryAshiya | 00:50 | |
| 4 | Living In Idleness 2GaryAshiya | 01:38 | |
| 5 | PremonitionGaryAshiya | 01:08 | |
| 6 | The Beginning of Extraordinary DaysGaryAshiya | 03:28 | |
| 7 | Escape From the Drudgery of Daily LifeGaryAshiya | 03:04 | |
| 8 | Trap KidnapperGaryAshiya | 01:46 | |
| 9 | ChaseGaryAshiya | 03:06 | |
| 10 | FriendshipGaryAshiya | 02:22 | |
| 11 | No Way OutGaryAshiya | 02:26 | |
| 12 | Bullet Armstrong (Acoustic Version)Hiroshi Ito | 01:49 | |
| 13 | Solid FriendsGaryAshiya | 01:18 | |
| 14 | Attacking the Municipal OfficeGaryAshiya | 04:34 | |
| 15 | Cutthroat BattleGaryAshiya | 02:00 | |
| 16 | ConvergenceGaryAshiya | 02:48 | |
| 17 | Bullet ArmstrongHiroshi Ito | 03:48 | |
