In the year 2010, the Holy Empire of Britannia is establishing itself as a dominant military nation, starting with the conquest of Japan. Renamed to Area 11 after its swift defeat, Japan has seen significant resistance against these tyrants in an attempt to regain independence. Lelouch Lamperouge, a Britannian student, unfortunately finds himself caught in a crossfire between the Britannian and the Area 11 rebel armed forces. He is able to escape, however, thanks to the timely appearance of a mysterious girl named C.C., who bestows upon him Geass, the "Power of Kings." Realizing the vast potential of his newfound "power of absolute obedience," Lelouch embarks upon a perilous journey as the masked vigilante known as Zero, leading a merciless onslaught against Britannia in order to get revenge once and for all. [Written by MAL Rewrite]

Unaired anime-original OVA bundled with 12th volume of the Hitsugi no Chaika novel.

Takehito Kumagami's clairvoyance leads his group of friends to another child with supernatural powers: Iori Sekiguchi, a mind reader. However, as they try to approach her, they realize her power makes her nearly impossible to pin down. Having been chosen by the club to handle this case, Nao Tomori and Yuu Otosaka must find a way to get around the child's unique ability before it is too late. [Written by MAL Rewrite]

A special animated commercial to celebrate the release of the manga's fifth volume. The full length version of the commercial was released on Kodansha's official YouTube channel the day after the short version was released on TV. It features the anthropomorphized cells of a human body, with the protagonist being a red blood cell named AE-3803.