Dead Dead Demon's Dededede Destruction

Nobuo Koyama's life is upended by the appearance of a giant spaceship. Falling unconscious in the chaos, he awakes to find eight years have passed.

Three years after its appearance, the spaceship remains static. Despite its presence, Kadode and her best friend Oran go about their school lives.

While the nation reacts to the fallen saucer, Kadode plucks up the courage to ask her teacher a favor. A private company develops a new weapon system.

A journalist investigates rumors of SES utilizing alien technology. Meanwhile, Kiho's boyfriend suspects the government of covering up alien invaders.

During a Christmas party, Kiho tells her friends about her recent break up. The Japanese Self-Defense Force engages with a large cube-shaped ship.

Kadode and Oran spark up a friendship in elementary school. During school camp, they discover a peculiar creature possessing otherworldly technology.

Despite Kadode's intentions to use the newfound alien technology to help people, her actions inadvertently lead to disastrous consequences.

With graduation approaching, Ai's classmate invites her on a date. The two reflect on how the mother ship's arrival has affected their lives.

After graduating, Kadode and her friends discuss their future plans. Despite the dangers in Tokyo, a young woman and her friend move there to study.

At university, Futaba joins Kadode's circle of friends. They enjoy campus life, juggling student clubs and protests in favor of alien coexistence.