Humans fight to protect their land from invading demi-human tribes in relentless battles. As his world is engulfed by intense warfare, Kai, a village boy from Lag, joins the fight to defend all he knows. After Kai’s comrades fall one by one and he’s injured, he suddenly recalls memories from another life. A fantasy tale unfolds as a village boy explores a world of magic, mystery, and heroism.
| Writing | Tsukasa Tanimai | Novel |
| Sound | Kenji Fujisawa | Original Music Composer |
| Writing | Tomoyasu Okubo | Series Composition |
| Visual Effects | Kōichirō Kawano | Character Designer |
| Directing | Kunihiro Mori | Series Director |
| Art | Kiyotaka Yachi | Art Direction |
| Art | Emi Toya | Art Designer |
| Visual Effects | Eri Oga | Color Designer |
| Camera | Ryou Kujirai | Director of Photography |
| Editing | Ami Ishii | Editor |
| Sound | Yuji Tange | Sound Director |
| Sound | Takahiro Yamanaka | Music Producer |
