This is a show that commits completely to its absurd premise and never apologizes for it. The art direction carries the entire weight, character designs so confident they make you forgive the animation collapsing under its own budget constraints. Virgin robot pilot energy in alternate-history Japan sounds ridiculous because it is, and the show knows exactly what it's doing the moment you stop expecting traditional spectacle and start watching for the weirdness instead.
When foreign warships threatened Japan's shores in the 1860s, an ancient giant robot called Onigami rose from legend to drive them back. Now, in a Japan that never modernized beyond the shogunate, a young virgin warrior discovers he's the chosen pilot of this legendary machine. His virginity isn't just a quirky detail, it's the source of his power, the key to piloting Onigami and defending the nation from new threats. Caught between honor, destiny, and the absurd circumstances of his calling, our protagonist must master his mechanical guardian while navigating a world frozen in time. Political factions vie for control of Japan's future, foreign powers circle hungrily, and the secret behind Onigami's origins remains hidden. As battles rage and the stakes escalate, he learns that his connection to the robot runs deeper than anyone imagined. This is mecha action filtered through a uniquely Japanese historical fantasy. Fast-paced combat sequences mix with a premise so ridiculous it somehow works. Expect over-the-top humor colliding with genuine mechanical spectacle and a protagonist whose greatest strength is his most embarrassing vulnerability.