It opens like a municipal promo video, because it is one, and that is exactly the joke that lands. Mitora Ootsuchi works the tourism desk at Ootsuchi Town Hall, and the first stretch is her and her coworkers rehearsing a sightseeing pitch, hitting the Gensui River and Kozuchi Shrine like they're filming B-roll for a pamphlet. Then a demon beast shows up and the pamphlet becomes a battlefield, and the show cashes in every tag it's carrying: mecha, supernatural, the whole overblown Chou Kagura Dai Hammer of it. Eleven minutes of local-government earnestness weaponized, with a heroine whose stake in saving the town is that promoting it is literally her job. Fans who found it call it slept on, and they're right, because nobody expects a regional tourism ONA to swing this hard. Watch it, then look up whether the shrine is real.
Mitora Ootsuchi works in the tourism bureau of a sleepy coastal town, spending her days rehearsing promotional performances and guiding visitors through local landmarks. Her routine shatters when a massive demon beast emerges from nowhere, threatening everything she's worked to protect. With her coworkers suddenly thrust into an impossible situation, Mitora discovers that salvation won't come from conventional means. Instead, she and her team must pilot a colossal mechanical hammer, an ancient defense system tied to the town's spiritual heritage, to stand against the creature. What begins as a quirky slice-of-life comedy transforms into high-stakes action as ordinary office workers become unlikely warriors. The supernatural threat forces them to combine teamwork with raw determination, wielding both humor and heart as they fight to keep their home safe. Part comedy, part mecha spectacle, and entirely unexpected, this wild premise turns a mundane workday into an all-out battle for survival. It's the kind of story where bureaucratic teamwork meets giant robot mayhem, and small-town pride becomes the greatest weapon of all.