SECRET LETTER Lyrics
| Song | SECRET LETTER |
| Artist | TINKERBELL SOUND LABEL |
| Artist | Sake |
| Album | 蒼の煉獄 |
YouTube Results (More on YouTube)
| Song | SECRET LETTER |
| Artist | TINKERBELL SOUND LABEL |
| Artist | Sake |
| Album | 蒼の煉獄 |