As the Soviet Union marches on Berlin in May of 1945, a secretive group of sorcerers and madmen gathers to perform a terrible ritual. After the war, they vanish and are not heard from again, except in rumour. One day, it is whispered, they will return. And on that day, the world will end. Fear the demons in human form. Fear the Longinus Dreizehn Orden.
Flash forward to present-day Japan. Fujii Ren is released from the hospital after two months spent recovering from a vicious brawl with his best friend Shiro. As Christmas approaches, he tries to rebuild his life, but even that is soon threatened, for the knights of the LDO have returned and brought the apocalypse to his doorstep. Forced to wield the same unholy power as his foes, will Ren be able to protect what is dear to him from the inhuman might of the Longinus Dreizehn Orden?
Inuyashiki has a family, a wife and two kids, none of which care about him. When he learns that he has only three months to live, he realizes that the only one who will miss him is his dog. Shortly after this realization, he is killed in a crash landing by aliens. He is rebuilt by them as a machine with a human exterior. How will his life change now that he isn't human?
A scientist couple has been arrested for conducting illegal studies, allegedly for performing genetic modification on five of their children. The youngest child Dannis is the only one who grew up as a normal human and now has to tend to the rest of his family while trying to find a medicine to turn them into normal humans again.
Dog human, plant gene, spiderweb gene, and mind reading–how will these family members who grew up in a laboratory survive in the outside world?!