The 10-episode plot centers on demonic battles, societal collapse at events like a track meet, and existential horror rather than identity politics. Casting features standard Japanese voice actors (Koki Uchiyama as Akira, Ayumu Murase as Ryo) with no race or gender swaps of established characters.

Thematic elements include explicit exploration of sexuality, puberty, and LGBT identity, with Ryo/Satan depicted as androgynous and undergoing a metaphorical 'coming out' in his true form, alongside other openly gay and lesbian characters praised in analyses for queer romance subplots and subversion of toxic masculinity. These appear as subplots and character arcs tied to the story's broader allegory of fearing 'the other,' but do not drive the foundational narrative of demon-human conflict or the ultimate battle.

Creator Masaaki Yuasa interviews emphasize faithful adaptation of the source's human-nature themes without activist framing. Reception highlights the representation as refreshing yet notes it kills off queer characters and balances sincerity with exploitation, without dominant 'woke' backlash or creator statements prioritizing messaging.