In the 71st year of the True Era, humans have successfully expanded into space and have started living in independent galactic colonies. The world itself is split between two major nations: the Atlantic Rim United States (ARUS) and the Dorssia Military Pact Federation (Dorssia)—superpowers that wage war against each other on Earth and far into outer space. In this war-torn era, a third faction comprised of Japan and Islands of the Oceanian Republic (JIOR), reside peacefully and prosper economically, maintaining neutrality between themselves and their militant neighbors. Kakumeiki Valvrave commences in an outer space JIOR colony, where 17-year-old Haruto Tokishima's peaceful life is turned upside down as a sudden Dorssian fleet breaches the neutral colony. Their objective is to seize the Valvraves: powerful, but rumored mechanized weapons hidden deep within Haruto's school, Sakimori Academy. In the ensuing chaos, Haruto stumbles upon one of the targeted Valvraves. With his friends' lives in peril, Haruto enters the mecha and seals a contract for its power in exchange for his humanity. With the aid of L-elf—an enigmatic Dorssian agent and gifted strategist—Haruto and the Valvrave initiate a revolution to liberate the world. [Written by MAL Rewrite]

Animated Flash shorts based on the light novel series "Haiyore! Nyaruko-san." In these shorts, Nyarlko, an anthropomorphized female version of Nyarlathotep from the Cthulhu Mythos, is constantly being told off by Mahiro, a normal human boy, for all the crazy or stupid things she does. In one of the shorts, Nyarlko is drawing a cover design for a body pillow. It turns out that the pillow's subject is a half-dressed Mahiro in what appears to be a hot and heavy scene with Nyarlko. Naturally, Mahiro proceeds to stab Nyarlko in the hand with a fork and threatens to kill her if she releases the pillow design. Other shorts revolve around various gags and occasionally feature Cthuko, an anthropomorphized female version of Cthugha, who's madly in love with Nyarlko.

Specials released with the anime BD/DVD.

Satoshi "Sasshi" Imamiya believes his life is in shambles, as only a 12-year-old can. Having lost his card collection, his childish dilemmas worsen when he learns that his childhood friend, Arumi Asahina, will be moving away. Suddenly, their issues are dashed aside for the surreal, and they find themselves transported away through bizarre worlds of science fiction, magic, and war. Any attempt to escape only catapults them into another alien land. Soon, the two come to a realization: every world is just a reimagining of their hometown. But there are two unfamiliar faces—the voluptuous Mune-mune and the elusive blue-haired Eutus—and they just might be the key to escaping their predicament. Abenobashi Mahou☆Shoutengai follows Sasshi and Arumi's comedic exploits as they desperately attempt to return home. However, when the pair unravel a tale spanning generations, they begin to wonder if the cause of their situation is more personal than they thought. Is returning home truly what they desire?