| Track Name | Track Artist | Album Artist | Album Name | Official Purchase/Artist Link | Album Genre | Source Track(s) |
|---|---|---|---|---|---|---|
| 紅空舞踏 | hiroshi | R／K Project | Crimson Septet | Link | ほおずきみたいに紅い魂 | |
| Gatekeeper | hiroshi | R／K Project | Crimson Septet | Link | 上海紅茶館 ～ Chinese Tea | |
| Snow Drop | hiroshi | R／K Project | Re:vival | Link | Original? |