In a postapocalyptic future, a human girl and an android travel the world in search of a mythical utopia to protect those they love. Nearly 200 years after the destruction of humanity in World War III, Roue lives a happy life exploring the ruins of civilization with her “uncle,� a robot named Zett. But when their peaceful life is threatened, Roue must trust the mysterious robot Chrome to bring her family together again. Hildr, a command-class military gear, has just won 50 back-to-back fights inside the warrior coliseum of Valhalla. Her 51st opponent: Chrome. As the two face off, Roue is forced to watch helplessly from the confines of a storage room on the lower levels. But while both Chrome’s and Roue’s attention is focused on the battle at hand, Valhalla’s ruler begins to hatch his own sinister scheme. Unbeknownst to her, Roue holds the fate of Valhalla in her hands, and danger is creeping ever closer!

In a postapocalyptic future, a human girl and an android travel the world in search of a mythical utopia to protect those they love. Nearly 200 years after the destruction of humanity in World War III, Roue lives a happy life exploring the ruins of civilization with her “uncle,� a robot named Zett. But when their peaceful life is threatened, Roue must trust the mysterious robot Chrome to bring her family together again. Following the advice of new friends, Roue and Chrome set off to find Heaven Land, a gear utopia, in order to revive Uncle Zett. But when a threatening gear blocks their path, Chrome unknowingly takes on a vicious combat form that frightens Roue. What other secrets might Chrome have that he doesn’t even know himself? And when their next lead on Heaven Land brings them to Valhalla, a coliseum of warriors, what horrors will Chrome unleash when he’s forced to fight once more?

In a postapocalyptic future, a human girl and an android travel the world in search of a mythical utopia to protect those they love. Nearly 200 years after the destruction of humanity in World War III, Roue lives a happy life exploring the ruins of civilisation with her “uncle,� a robot named Zett. But when their peaceful life is threatened, Roue must trust the mysterious robot Chrome to bring her family together again. After Roue accidentally activates Chrome without a base program, what’s essentially his soul, she and Uncle Zett invite him into their makeshift family and encourage him to choose his own purpose. But when an insane machine attacks their home, will Chrome survive, much less find his purpose?

Ninja and animal lover Jiro Azuma's life changes forever when he finds himself in the middle of a war of ninjas vs. demons. Jiro Azuma is descended from of a long line of ninja, and he also can talk to animals. One day, he rescues a very unique black cat named Rago,who also happens to be a powerful unearthly being, and is dragged into a secret supernatural war. Although he may appear rough-and-tumble, Jiro Azuma's compassionate side emerges when it comes to the furry critters he can communicate with. But Jiro's soft spot for animals gets him in major trouble when a suspicious stray cat fuses with him, granting him exceptional power but also dragging him into humanity's hidden battle against powerful demons. An action-packed supernatural ninja story about a young man and his demon cat.

Ninja and animal lover Jiro Azuma’s life is changed forever when he finds himself in the middle of a war of ninjas vs. demons. Jiro Azuma is descended from of a long line of shinobi, and he also can talk to animals. One day, he rescues a very unique black cat named Rago, a supernatural being, and is dragged into a secret supernatural war. In order to save Jiro’s life, Rago pledges loyalty to Amagi, his sworn enemy! But Rago has no intention of letting his power be used by evil forces, and so when he joins Amagi, he leaves all his power behind in Jiro. Outraged at the unexpected betrayal, Amagi unleashes his wrath upon Rago! 

Ninja and animal lover Jiro Azuma's life is changed forever when he finds himself in the middle of a war of ninjas vs. demons. Jiro Azuma is descended from of a long line of shinobi, and he also can talk to animals. One day, he rescues a very unique black cat named Rago, a supernatural being, and is dragged into a secret supernatural war. Inside the illusory world generated by Fuyo, Jiro and Rago face off against a giant mononoke named Amagi. In the Edo period, Amagi attempted to recruit allies to fight back against the newly formed government ninja squad, but Rago refused to join him! What secrets lurk in the depths of Rago's lost memories? And what's behind the sudden string of mass murders happening in the real world?

Ninja and animal lover Jiro Azuma's life is changed forever when he finds himself in the middle of a war of ninjas vs. demons. Jiro Azuma is descended from of a long line of shinobi, and he also can talk to animals. One day, he rescues a very unique black cat named Rago, a supernatural being, and is dragged into a secret supernatural war. With Jiro's ability to fully awaken and use Rago's power, the final battle with Amagi is about to begin. Will Jiro and his friends be able to stop the rampaging Amagi in time? Don't miss the thrilling conclusion!

Ninja and animal lover Jiro Azuma’s life is changed forever when he finds himself in the middle of a war of ninjas vs. demons. Jiro Azuma is descended from of a long line of shinobi, and he also can talk to animals. One day, he rescues a very unique black cat named Rago, a supernatural being, and is dragged into a secret supernatural war. There’s a new squad at the Bureau of Espionage—code name: Black Torch. The squad, run by Shiba, consists of Jiro, Ichika and one more rookie named Reiji Kirihara. However, Reiji has no intent of working with a guy who fused together with a demon! Will this squad ever be able to work together?