Plot
Haruto Tokishima, a student from Sakimori High School living on the sphere's "Module 77", discovers a mysterious and powerful mecha called Valvrave (ヴァルヴレイヴ) and uses it to defend the module from a Dorssian invasion that takes over the rest of JIOR. However, after piloting it Haruto becomes an immortal who requires to feed on others. Once they learn that both Dorssia and the ARUS intend to claim the Valvrave for themselves, with no concern for their lives, the students of Sakimori High declare Module 77 an independent state and abandon JIOR territory. Soon after, several other Valvraves are found inside the school, and some of them are claimed by other students who join Haruto's fight to protect it. Once Haruto is approached by L-elf Karlstein, a Dorssian spy who claims to have the intentions to one day stage a revolution in his own country, both join forces in an unlikely alliance to secure the sovereignty of their new-found nation declared and officially recognized as New JIOR.
The commander of the Dorssia Military Pact Federation, Cain Dressel, eventually leads an invasion to Module 77 and steals the last Valvrave, being revealed as another immortal being like Haruto. Two months later, after Module 77 successfully arrives at the Moon, New JIOR starts receiving international support, albeit carefully overseen by the ARUS government. A group leaves the Moon en route to Earth, with Haruto resolving to locate the Valvrave creators and learn how to revert to becoming human once more before destroying the Valvraves himself. On Earth, Haruto learns the Valvrave absorbs the pilot's memories and will soon kill him. Nevertheless, he decides to keep piloting so that no other bears the burden. L-elf tries rescuing Dorssian princess Lieselotte, who explains to Haruto that a race known as Magius landed on Earth a few centuries ago and began possessing Earth's lifeforms in order to survive. As time passed they created an organization called the Council of One Hundred and One to conceal their existence from humanity while securing Runes for their survival.
After the group returns to Module 77 with the Valvrave's creators (but at the cost of Lieselotte's life) and the capture of Saki Rukino, the Council of One Hundred and One exposes the Valvrave's pilots' identities as immortals by using Saki. With this, ARUS starts gunning down the Module 77 students who expel Haruto from the Module so that the attacks will stop, resulting in Kyūma Inuzuka giving his life to save them and allow them to escape. However, Haruto, Saki, Raizō Yamada, Akira Renbōkoji and L-elf work with Dorssian agents A-drei, X-eins and royalist leader Kriemhild to reveal that the Dorssians are also immortals. In the aftermath, Haruto kills Cain in combat, but dies as a result of the Valvrave draining his memories. The series then moves to a future where the surviving Valvrave pilots are attempting to make peace with unknown life forms, while Haruto's childhood friend, Shōko Sashinami, becomes the pilot of Unit 1 to carry on Haruto's dream of coexistence.
