Minatogawa Kazuomi

10 years in the past, the city of Tokyo was consumed by an unknown darkness. It started off as a black speck in the sky. As it grew in size, it consumed everything in its path, creating the area known as the "Lightless Zone." Now, from the darkness arises beings known as "Imashime" ("The Warning"), attacking people during the night. Humanity's only weapon against these Imashime are the "Vess," fighting machines equipped with a piercing weapon that can stop the Imashime from regenerating itself. Saginuma Akashi is at the top of his class when it comes to piloting the Vess. Now, he and a select other few have been selected to be the first battalion to invade the "Lightless Zone" for the first time.

Unknown entities known as "Witches" roam the cities. They exist solely to destroy humans and turn them into one of the Witches. There is a sector in the government known as the Suppression Corps that specializes in dealing with these Witches, who are completely immune to conventional weaponry. Hansel Takamine is the leader of this group, and has an extreme hatred towards the Witches. With his sword imbued with the powers to eradicate Witches, he fights to avenge his sister who was murdered by these monsters.

Since a young age, Tenjou Yuuya was continuously bullied. He is staying in his beloved grandfather's home while he goes to school and, as usual, he receives a harsh bullying, and takes an extended absence from school in order to have some time to heal his wounds. While on this long time of absence, he takes the opportunity to clean his grandfather's house and finds a room he never had seen before.Due to this being where his grandfather kept many different objects that he gathered from his travels around the world, it needed tidying! While Tenjou was arranging the objects, he found a door, yet it didn't seem to go anywhere since it was standing upright and not attached to any wall. Out of curiosity, Tenjou opens this door, and what he found on the other side is...Official English Light Novel

As the Soviet Union marches on Berlin in May of 1945, a secretive group of sorcerers and madmen gathers to perform a terrible ritual. They care nothing for the fate of the Reich. To them, the countless lives lost in the battle are the perfect sacrifice to fuel their spell. After the war, they vanish and are not heard from again, except in rumor. 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 wounds suffered in a vicious brawl with his best friend Shiro. As Christmas approaches, he tries to rebuild his life, clinging to what brilliance remains. 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? Adapted from the visual novel "Dies Irae".