A ninja protecting his childhood friend is standard anime setup until an ayakashi transformation flips the entire dynamic, forcing Matsuri to fight monsters from the body he's suddenly inhabiting. The show commits to this premise instead of treating it as a one-episode gag, letting actual character development happen across 12 episodes while keeping the comedy alive. Fluid action sequences and solid worldbuilding keep the momentum moving, though the excessive censorship (cat stickers doing heavy lifting) undercuts what the ecchi angle is trying to sell. This is what happens when you take a high-concept gimmick seriously instead of winking at the audience about it.
Matsuri dedicates his life as a young exorcist ninja to one mission: keeping his childhood friend Suzu safe from the ayakashi that lurk throughout Japan. These supernatural creatures are everywhere, requiring constant vigilance and combat skills that Matsuri has honed since childhood. His routine of protection and fighting changes completely when Shirogane enters the picture. This ayakashi cat isn't like the others, and its arrival creates a messy triangle of complications that Matsuri never anticipated. Suddenly, the straightforward world of monster-hunting and friendship becomes far more chaotic. Matsuri must balance his duties as an exorcist with unexpected romantic tension, the mystery of Shirogane's true nature, and how to keep both Suzu and this strange ayakashi from spiraling everything further out of control. Action collides with comedy as Matsuri navigates supernatural threats and deeply personal feelings, discovering that protecting the people you care about isn't always as simple as swinging a blade at monsters.