Absolute Duo

is a Japanese light novel series by Takumi Hiiragiboshi with illustrations by Yuu Asaba. Media Factory has published seven volumes since 2012 under their MF Bunko J imprint. It has received two manga adaptations. An anime television series adaptation by 8-Bit started to air from January 4, 2015.

Plot
The story begins with Blaze—a weapon that is the manifestation of a human's soul. Tooru Kokonoe happens to be qualified for this, but for some reason his Blaze is not a weapon, but a shield. Moreover, he enrolled in a school that teaches combat skills, and thanks to the school's Duo partner system, he ends up living with a beautiful silver-haired girl.

Official

 * Absolute Duo at Comic Walker (Japanese)
 * Official Anime Website (Japanese)