| Reach the top, and everything will be yours. At the top of the tower exists everything in this world, and all of it can be yours. You can become a god. This is the story of the beginning and the end of Rachel, the girl who climbed the tower so she could see the stars, and Bam, the boy who needed nothing but her. |
| Name | Character | Episodes |
|---|---|---|
| Nobuhiko Okamoto | Khun Aguero Agnes (voice) | 39 |
| Takuya Eguchi | Shibisu (voice) | 29 |
| Yuma Uchida | Ja Wangnan (voice) | 26 |
| Kengo Kawanishi | Prince (voice) | 26 |
| Kenichirou Matsuda | Kang Horyang (voice) | 26 |
| Taichi Ichikawa | Jue Viole Grace / Bam (voice) | 26 |
| Kenta Miyake | Rak Wraithraiser (voice) | 25 |
| Yoko Hikasa | Hwaryun (Karen) (voice) | 20 |
| Saori Hayami | Rachel (voice) | 18 |
| Jun Kasama | Novick (voice) | 15 |
| Daisuke Ono | Phonsekal Laure (voice) | 14 |
| Hochu Otsuka | Headon (voice) | 13 |
| Kazuyuki Okitsu | Evan Edroch (voice) | 13 |
| Taichi Ichikawa | Bam (voice) | 13 |
| Shizuka Itoh | Black March (voice) | 13 |
| Tetsuya Kakihara | Quaetro Blitz (voice) | 10 |
| Yuu Hayashi | Edin Dan (voice) | 9 |
| Ai Kayano | Ron Mei (voice) | 8 |
| Amatsuki | Vespa (voice) | 7 |
| Yoko Hikasa | Yuto (voice) | 5 |
| Katsuyuki Konishi | Ha Jinsung (voice) | 4 |
| Ayumu Murase | Mule Love (voice) | 3 |
| Koki Uchiyama | Khun Hatzling (voice) | 2 |
| Kazuhiko Inoue | Great Teacher (voice) | 2 |
| Daisuke Kishio | Hansung Yu (voice) | 2 |
| Yoko Hikasa | Yuto / Hwaryun (voice) | 1 |
| Akemi Okamura | (voice) | 1 |
| Kazuki Kyan | Fake Viole (voice) | 1 |
| Kazuki Kyan | (voice) | 1 |
| Jun'ichi Yanagita | Alexei Amigochaz (voice) | 1 |