The live-action version of Kengo Hanazawa's manga “Under Ninja” tells the story of a secret ninja organization in modern Japan and the rebels who break away from it. Directed by Yuichi Fukuda, the film stands out for its strong action scenes and the cast's passionate performances. However, Fukuda's trademark comedy style clashes with the manga's original tone, disrupting the film's overall balance and introducing challenges that influence how the story unfolds.

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.