Ouroboros: Kono Ai Koso, Seigi. ORIGINAL SOUNDTRACK
| Composed by | Hideakira Kimura |
| Arranged by | Hideakira Kimura |
| Published by | Anchor Records |
| Catalog number | UZCL-2065 |
| Release type | Game Soundtrack - Official Release |
| Format | 1 CD - 22 tracks |
| Release date | March 04, 2015 |
| Duration | 01:13:02 |
| Genres |
| 1 | No One -Main Title- | 03:03 | |
| 2 | years ago -まほろば- | 03:20 | |
| 3 | A Way of Life -日常- | 02:16 | |
| 4 | Hangin' Out -第二署- | 02:54 | |
| 5 | Too Close -匂- | 01:37 | |
| 6 | Recollection -想- | 03:09 | |
| 7 | Childhood Memories -結- | 04:05 | |
| 8 | Missing Link -密- | 03:34 | |
| 9 | Untraceable -潜- | 03:25 | |
| 10 | Research -究- | 03:30 | |
| 11 | Don't Say a Word -信- | 04:02 | |
| 12 | Suspicion -裏- | 03:44 | |
| 13 | Get Out of Here -際- | 03:29 | |
| 14 | At the Haunted House -零- | 03:07 | |
| 15 | NO One -Guitar & Strings Quartet version- | 03:34 | |
| 16 | The Guy with the Gold Watch -金時計- | 02:31 | |
| 17 | Violence -暴- | 03:46 | |
| 18 | In Love -好- | 03:49 | |
| 19 | Impending Judgment -忌- | 03:11 | |
| 20 | In Love -Piano version- | 03:57 | |
| 21 | Finale -焉- | 02:37 | |
| 22 | No One -Reprise- | 04:22 |
