From Dark Horse: The Apocalypse didn't end with a BANG, but with a whimper. Silently, the "amnesia wind" swept away all of mankind's knowledge. Thousands of years of human civilization vanished overnight as people forgot how to use the tools of modern civilization; who they were--how to speak--everything. Technology decayed as mankind was reduced to an extremely primitive level. Two years after the devastation, a young man explores a nation reduced to barbarism: America. Miraculously re-educated after the cataclysm, a young man is accompanied by a strange woman--somehow spared the obliterating effects of the amnesia wind. Pursued by a relentless killing machine, they search for those responsible for stealing their memories.

The story takes place in the city of demons, Shinjuku, and follows the life of Mephisto, the most powerful demon physician.

In the thick fog that drowns out all sounds and smells, Arama and her brother have the bad luck of running into a group of infamous bounty hunters. These men have gathered in order to hunt an outlaw with a bounty of one hundred million gold on his head. But, who is this man? And can he really be hunted so easily? (Source: Bliss)

In the distant future, a terrifying vampire has become the ruling species of Earth. Only the beautiful black-robed swordsman “D” can compete! 40th Anniversary Project of the Series! Saiko Takaki adapted the ninth novel in Hideyuki Kikuchi and Yoshitaka Amano's Vampire Hunter D novels, "The Rose Princess," into a manga. (Sources: Asahi Shimbun Publications Inc, translated)

Dr. Taima is not your average doctor. A skilled acupuncturist with the ability to use taimashin (needles that control the flow of chi in things and are used to banish demons), he is often called upon to drive demons out of posessed persons. Accompanied by his charming assistant, Togetsu Maki, Dr. Taima travels near and far to deal with these otherwordly maladies--often at the risk of his own life. (Source: ANN)

At the conclusion of their long journey, Shibito and his beloved Yurihime disappear. However, Shibito goes through hell and comes back stronger than ever, ready to fight again in the age of war!

From Digital Manga Publishing: The time is the first decade of the twenty-first century. The place is Tokyo, Japan. Specifically, the ward known as Shinjuku. An 8.5 earthquake shatters Shinjuku, destroying buildings and streets and turning the bustling ward into a haunted ghost town plagued by the paranormal and the bizarre. Scientists and ESP investigators, along with criminals, enterprising yakuza gangs and mutant cyborgs come to “Demon City”; some to study the effects of the Devil Quake, others to commit heinous acts of savage violence, and still others to live freely in this lawless town on the edge of the abyss. This is the world of Demon City Shinjuku and how it all began. It is now 2030 and President Kozumi Rama of the World Federation is attacked by an otherworldly demon Reba Ra, an evil sorcerer of immense power. The only person who can stop Ra is Yogi Master Agni Rai’s former apprentice, Genichiro Izayoi but Genichiro is dead. His son, Kyoya Izayoi, a high school student and the inheritor of Izayoi’s killer nenpo martial arts technique, now enters Shinjuku to try to stop Sorcerer Ra from unleashing the ultimate horror in Demon City. The fate of Shinjuku and the rest of the world hangs in the balance.

Demon City Shinjuku, home to monsters and magicians alike. The warlock Gento Roran has broken his fifteen-year slumber and seeks dominion over the city. Now resurrected from his accursed sarcophagus, he is accompanied by the Hyota, the “small superman.” A secret seal has proclaimed that “Those who control Demon City will control the world.” And so the stage is set for a fateful battle between Gento and Setsura Aki. Meanwhile, Doctor Mephisto, the Demon Physician, is treating a curious new patient, a girl named Mayumi. Any man who has sex with her dies soon afterwards. This deadly cause and effect appears to be nothing more than coincidence at first. But only at first. Assassination squads possessed of the most unusual ways of dealing death come after Setsura. One after the next, he’s caught up in the fight of his life! What is this secret seal? And how is it connected to Mayumi?

After a devastating earthquake that left most of Japan in ruins, the district ward of Shinjuku in Tokyo has opened up a doorway into another dimension—becoming the halfway-house suspended between the mortal world and the supernatural. Setsura Aki, undercover P.I., is considered the best "man hunter" in the business. He allies himself with friend and rival, Doctor Mephisto—a wizard of physical and spiritual surgery. Together, they battle the evil forces that overrun the city. Coming from the deepest and darkest parts of China, four immortal demons, led by the Princess of vampires, have surmounted four thousand years of space and time to seize control of Shinjuku and make it their own. It is up to Setsura and Mephisto to uncover their new formidable foes’dark plans for the city. Can the duo stop them before they plunge the living populace into a new level of fear and slavery none can escape?