Aspiring samurai Shinsuke Hyoudou's world is turned upside down when he witnesses hermit Jinka Yamato and fox girl Tama Youko slay a brigands' lair in the blink of an eye. Tama happens to be katawara, a magically gifted species, who can share her powers with Jinka through a special ritual. Together, they travel the world as vigilantes to stop evil beings, be they katawara or human. As Shinsuke learns more about this new world, he discovers that monks perform inhumane research on spiritually gifted civilians, in the hope of creating human-katawara hybrids that can fight against monsters. Soon joined by Shakuyaku—a girl they manage to save from the monks’ experiments—and other allies, the group embarks on a quest to achieve their respective dreams.

Nobody asked to be a cat! After dying in a fight against the forces of evil, a knight is shocked to discover that instead of being reborn as a hero of humanity, he starts his new life as a behemoth-one of the most powerful monsters in the world! The only problem is that a baby behemoth looks an awful lot like...an adorable house cat?! Things grow even more confusing when a beautiful elf adventurer rescues him from the brink of death rather than finishing him off. This house-cat-slash-knight's baffling journey is just getting started...

The story circulates around a mysterious and dangerous island referred to simply as "G". A long time ago, a powerful god named Gestalt was banished to the earth and he had found refuge in the island known as G. To utter the name for which it stands is forbidden, for people were so afraid of the wrath of the god that they considered his name a curse. Father Oliver is a priest who has left his order and traveled to the island of G in order to discover the truth behind it. He ends up making the acquaintance of a young girl named Ohri, who turns out to be quite adept in magic. Meanwhile, the head of the order has hired a dark elf named, Suzu, to track down Oliver and bring him back. Suzu finds him easily enough. However, she hadn't anticipated the powerful sorceress in his company, Ohri. The girl disposes of Suzu for the moment, and she and the Father continue on. As if things weren't rough enough, the island of G has it's share of monsters and magic-users to get in the way of their travels.

Remy, a cheerful and tender-hearted girl, lives with her mother in a French country town. One day her father returns to the town after a long period working away from home in a city. Her father tells Remy that she isn't their real daughter, and Remy is almost sold to an evil slave trader. It is Vitalis, a strolling entertainer, who helps Remy. Vitalis discovers her talent for singing and decides to take her in with his troupe.