Fill in the darks Lyrics
| Song | Fill in the darks |
| Artist | koushirou |
| Artist | 巡音ルカ |
| Album | Megu-Realization |
YouTube Results (More on YouTube)
| Song | Fill in the darks |
| Artist | koushirou |
| Artist | 巡音ルカ |
| Album | Megu-Realization |