Its premise follows a war between nations that deploy giant dragons as weapons, where dragon dentists protect the creatures' teeth from cavity monsters known as mushi; the teeth carry spiritual weight tied to death, resurrection, and fate. The narrative centers on original characters Nonoko, selected as a dentist through in-universe dragon mechanics after accepting a foretold death, and Bell, a resurrected enemy soldier, as they navigate battles and confront destiny.

Themes draw directly from Buddhist philosophy on mortality, the cycle of life, and the spiritual burden of war, with no identity politics, systemic oppression narratives, or critiques of traditional norms present in any plot points or character arcs. Casting features entirely original roles with no established-character race, gender, or sexuality swaps and no DEI mandates, as confirmed by the absence of any source material comparisons or cross-sex casting in the Japanese production. Creator statements and content show zero indication of progressive ideological intent, keeping the focus on traditional fantasy war storytelling and dragon mythology.

Audience reception centers on the animation quality and the unique premise rather than any social commentary, aligning with the complete lack of thematic centrality for contemporary activism. Casting evidence: Casting research is incomplete or contains unresolved comparisons; overall casting fidelity has not been established. Documented credits include Fumika Shimizu as Nonoko Kishii (voice); Nobuhiko Okamoto as Bernard 'Bell' Octavius (voice).