| Track Name | Track Artist | Album Artist | Album Name | Official Purchase/Artist Link | Album Genre | Source Track(s) |
|---|---|---|---|---|---|---|
| Ancient Lake | heric | Undefined Field | Nostalgic Girl | Link | ルーネイトエルフ | |
| Nostalgic Girl | heric | Undefined Field | Nostalgic Girl | Link | ラクトガール ～ 少女密室 | |
| Sunless Library | heric | Undefined Field | Nostalgic Girl | Link | ヴワル魔法図書館 | |
| For Friends | heric | Undefined Field | Nostalgic Girl | Link | 亡き王女の為のセプテット | |
| Time Walker | heric | Undefined Field | Nostalgic Girl | Link | メイドと血の懐中時計 | |
| Magician's Dream | heric | Undefined Field | Nostalgic Girl | Link | 紅楼 ～ Eastern Dream... |