A boy and his unlicensed monster cat show up in Meiji Kyoto and accidentally become the center of a turf war between bureaucrats and rebels, all while the actual plot twist is that he's already won before the show started. The comedy lands because nobody's actually evil, just stubborn about which law matters more. Moeyo Ken treats a youkai licensing system like it's the most serious administrative conflict in history, then makes you care about it anyway.
Ryunosuke returns to Kyoto with Nekomaru, a youkai companion, only to find the city transformed by a strange new reality: monsters now require licenses to coexist with humans, and those without papers face capture. The Kidou Shinsengumi, a corporate enforcement division, hunts down unlicensed youkai with military precision. Standing against them is the Tsubamegumi, a scrappy resistance group that rejects the licensing system entirely. Caught between these two forces, Ryunosuke discovers his own ties run deeper than he anticipated. His bloodline connects him to the Shinsengumi's leadership, making his position impossibly complicated. Nekomaru needs that license to stay, but helping the hunters means betraying those fighting for youkai freedom. The Meiji Era reimagined here blends historical adventure with absurdist comedy, where bureaucratic monsters prove just as troublesome as the literal ones. What unfolds is a chaotic blend of sword fights, political scheming, and the kind of humor that doesn't take itself seriously. Perfect for anyone wanting samurai action mixed with heartfelt friendship and the absolute weirdness of a world where paperwork determines a creature's right to exist.