| Track Name | Track Artist | Album Artist | Album Name | Official Purchase/Artist Link | Album Genre | Source Track(s) |
|---|---|---|---|---|---|---|
| Hopeless abyss | Palon | Rigune | Hopeless Abyss | Not Available | U.N.オーエンは彼女なのか？ | |
| After festival | Palon | Rigune | Hopeless Abyss | Not Available | 砕月 | |
| There were none | Palon | Rigune | Hopeless Abyss | Not Available | U.N.オーエンは彼女なのか？ |