Dead Dead Demon's Dededededestruction Zenshou

The second film of the Dead Dead Demon's Dededededestruction duology.

As the world is threatened by the sudden appearance of a mysterious alien mothership, best friends Koyama Kadode and Nakagawa “Ontan” Oran carry on about their high school life. But as they grow up, they face existential questions, learning adulthood’s complexities and that the true threat may not be from above. Note: Includes Episode 0, which chronologically occurs between episodes 16 and 17.

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.

Many years have passed since humanity was driven to the brink of extinction by the sudden emergence of the unknown life forms Gadoll. Those humans that survived now dwell in a 3000 meter-high mobile fortress Deca-dence built to protect themselves from the Gadoll threat. Denizens of Deca-dence fall into two categories: Gears, warriors who fight the Gadoll daily, and Tankers, those without the skills to fight. One day, Natsume, a Tanker girl who dreams of becoming a Gear meets surly Kaburagi, an armor repairman of Deca-dence. This chance meeting between the seemingly two opposites, the girl with a positive attitude who never gives up on her dreams and the realist who has given up on his, will eventually shake the future course of this world.