Ninja samurai Onimanji, who has been sealed in a cursed urn for 631 years and 59 days, is resurrected in the modern era by the assassin-for-hire company, Kika Company. The odd team of Kika, Shigeru, a bumbling assassin, and Onimanjii perform a series of dark jobs and must still compete with rival company Nutmeg.
Still reeling from the events of a zombie apocalypse, a young woman, along with a group of allies, makes her way across a dystopian Japan in search of her mother, the Zombie Queen.
Yuki lives at home in peace until one day a unit of assassins breaks in and kill her mother. In order to revenge herself Yuki becomes a demon of vengeance by donning gothic lolita clothing, using a parasol as a deadly weapon, and executing the guilty in God's name.
In future Tokyo, a young woman in the privatized police force tracks down her father's killer while battling against mutant rebels known as engineers.