Two OVA episodes bundled with the 16th volume of the manga. One of the included episodes is based on the story from the 15th volume, while the other contain an all-new original story. (Source: ANN)

In a dying world, there exists an ancient legend: when the world ends, the gateway to paradise will be opened. This utopia is the sole salvation for the remnants of life in this barren land, but the legend also dictates that only wolves can find their way to this mythical realm. Though long thought to be extinct, wolves still exist and live amongst humans, disguising themselves through elaborate illusions. A lone wolf named Kiba finds himself drawn by an intoxicating scent to Freeze City, an impoverished town under the rule of the callous Lord Orkham. Here, Kiba discovers that wolves Hige, Tsume, and Toboe have been drawn in by the same aroma. By following the fragrance of "Lunar Flowers," said to be the key to opening the door to their ideal world, the wolves set off on a journey across desolate landscapes and crumbling cities to find their legendary promised land. However, they are not the only ones seeking paradise, and those with more sinister intentions will do anything in their power to reach it first. [Written by MAL Rewrite]

Low on luck after a series of unfortunate events, You Keika works part-time to try bringing himself out of a life of poverty. After a strange encounter with a white-haired man in a junkyard, You wakes up to discover that he was killed in a sudden accident and has become a spirit. The man he had encountered, Tanmoku Ki, is revealed as the 13th Youmeshi of the Tanmoki, the highest-ranking exorcist family of China. Noticing the wandering spirit, he offers You the opportunity to form a pact: he will offer You protection from humans and in return, You will have to become his spirit shadow, keeping him safe and guarded at all times. From then on, the two face untold challenges in the spiritual world, striving to keep those around them safe from harmful spirits. Along the way, the pact they formed grows into something more; a bond that neither of the two ever expected. Behind their roles as master and servant, a lingering admiration begins to emerge. [Written by MAL Rewrite]

Texhnolyze takes place in the city of Lux, a man-made underground city that has crumbled after years of neglect and lack of repairs. Citizens of Lux have come to refer to their home as simply "The City" and treat it as though it has a mind and will of its own. Three major factions battle to control Lux: Organo, a group of "professionals" who collaborate with the criminal underworld that controls Texhnolyze (prosthetics), the Salvation Union, a populist group that seeks to disrupt Organo's business, and Racan, a collection of young individuals with Texhnolyzes that use their abilities for personal gain. Ichise was once an orphan who has made a place for himself in Lux as a prize fighter. One day, a fight promoter grows angry with him and the altercation that follows results in Ichise losing an arm and a leg. Before death can take him, Ichise is found by the scientist Eriko Kamata, who uses him as a test subject for her newly designed Texhnolyze. With these powerful new limbs at his disposal, Ichise begins to work for Oonishi, the leader of Organo. He soon meets a mysterious young girl, Ran, who has the power to see possible futures. Together, they soon realize that Lux is on the brink of war and collapse, and that they may be the only ones who can save The City.