May 1, 1945. Berlin. As the Red Army raises the Soviet flag, a group of Nazi officers conduct a ritual using the slaughter in the city to bring back the LDO, supermen whose coming would bring the world's destruction. Their success remains unknown.<br><br> Present day. Suwahara City. Ren Fujii spends his days at the hospital due to a violent fight with his best friend, Shirou. He tries to value what he has left to him, but he is haunted by Shirou's words: "Everyone who remains in this city eventually loses their minds." and a recurring dream of a guillotine, murderers, and the black clad knights pursuing them. <br><br>(Source: Anime News Network, edited)<br><br> <i>Includes episode 0.</i>