DEMON LORD 2099

Ten Years ago, Genichirou Izayoi died trying to stop the sorcerer Rebi Ra, and as a result Shinjuku became a playground for demons. And now, the day approaches when Rebi Ra will complete his decade-long ritual to plunge the rest of the world into chaos! As Genichirou's son, it falls to Kyouya to venture into the heart of Shinjuku and put an end to the sorcerer his father couldn't beat. Can Kyouya exceed his father's legacy, or will the demons of Shinjuku create Hell on Earth?

In the year 2024, the world has collapsed. Grotesque monsters lurk amongst the ruins of Japan, while remaining people scrape together what they can to survive. Kiruko, an odd-job girl in Nakano, accepts a mysterious woman's dying wish to take a boy named Maru to a place called Heaven.

The story takes place in the year 2138 when virtual reality gaming is booming. Yggdrasil, a popular online game is quietly shut down one day. However, the protagonist Momonga decides to not log out. Momonga is then transformed into the image of a skeleton as "the most powerful wizard." The world continues to change, with non-player characters (NPCs) beginning to feel emotion. Having no parents, friends, or place in society, this ordinary young man Momonga then strives to take over the new world the game has become.

After his embarrassing defeat at the hands of a brave hero, the Demon Lord is back and ready for revenge… but after ten years apart, the hero, Max, isn’t the dashing do-gooder the Demon Lord remembers. In fact, Max has turned into a shut-in slob with no interest in an epic rematch. Can the Demon Lord whip his former nemesis back into shape, or will he be defeated by the hero-turned-couch-potato once again and join him in his lazy life?