Since the catchphrase reads "Abe no Seimei to Onmyoji" (Abe Seimei and the Yin-Yang Master), I thought it would be an action story about battles against monsters. Still, it was more in the category of a mystery novel.

The Shirogumi, Japan's premier VFX studio, wanted to depict a battle between a monster and a human never seen before. This visual had never been seen before in a monster movie. Unlike Monster Verse, this film was also a highly accomplished human drama.