After the murder of their parents, 11-year-old twin brothers Thor and Rai Klein are sent away from their home planet. They find themselves awakening on the terraformed planet of Chimaera, where carnivorous plants dominate and the few humans who live there are divided into four groups known as "Rings." Soon after, they meet a young man by the name of Zagi, and the twins learn that only the "Jyu Oh Sei"—the one who conquers these four Rings—is allowed to leave the planet. Driven by the desire to return home and discover the truth behind the death of his parents, Thor resolves to survive in the harsh, merciless environment of Chimaera. However, he quickly learns there is more than meets the eye in this strange ecosystem. As Thor is swept up in the politics that entangle the Rings, he uncovers more about his parents' murder, and ultimately, humanity's fate as a whole. [Written by MAL Rewrite]

Kei Asai lives in the oceanside city of Sakurada—a town where the inhabitants are born with strange abilities. On the school rooftop one day, he meets Misora Haruki, an apathetic girl with the power to reset anything around her up to three days prior. While no one knows when she has reset, not even Haruki, Kei can retain everything before the reset thanks to his own ability: photographic memory. After they successfully help someone by combining their powers, they join the Service Club to aid others in their town. However, their club becomes involved with and begins completing missions for the mysterious Administration Bureau—an organization that focuses on managing the abilities in Sakurada and manipulating the town's events for their own ends. They may find out that there are more things at work in Sakurada than the machinations of the uncanny organization. [Written by MAL Rewrite]

A catastrophic earthquake has left Tokyo, and most of the Earth for that matter, under the sea. Aika is a salvager who retrieves various remains from the watery ruins. When Aika accepts the dangerous mission of locating and obtaining the mysterious Lagu, she discovers that she's not the only one after it.

At the pinnacle of his gymnastics career, Joutarou Aragaki—nicknamed Samurai for his signature hairstyle—suffers a shoulder injury following his wife’s death. Five years later, he continues to push the limits of his body as a member of the Japanese gymnastics team. However, Joutarou's strenuous training fails to show any progress. His coach, Noriyuki Amakusa, advises that he retires. Together with his exuberant and supportive nine-year-old daughter, Rei, Joutarou takes a trip to Ego Wonderland to break the bitter news to her. However, their excursion ends in an odd encounter with a peculiar self-proclaimed ninja named Leonardo. He follows them home and interrupts Joutarou’s every attempt at telling his daughter. Upon learning that Leonardo hopes to witness his gymnastics again, Joutarou astounds Japan with his announcement that he is not retiring. With fervent support from his family, friends, and Leonardo, Joutarou dedicates himself to the biggest challenge of his career and prove that the gymnastics world is right where he belongs. [Written by MAL Rewrite]