| Title | Artist | Time | ||
|---|---|---|---|---|
| 1 | the prologue ~ the Birth of em | Billlie | 0:21 | |
| 2 | back to the world (the $UN pal | Billlie | 1:10 | |
| 3 | RING ma Bell ~ the howling mem | Billlie | 1:22 | |
| 4 | the anonymous hide and seek | Billlie | 0:34 | |
| 5 | B@ck 2 where we Belong | Billlie | 1:01 | |
| 6 | who’s the Joker ~ overture t | Billlie | 2:17 | |
| 7 | snowy night before the end of | Billlie | 0:36 | |
| 8 | B-B’rave | Billlie | 1:34 | |
| 9 | RING ma Bell ~ retrogression o | Billlie | 1:19 | |
| 10 | the Birth of emotion and the e | Billlie | 1:55 | |
| 11 | epilogue ~ reprise of the $UN | Billlie | 0:41 |
