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. 
 
(Source: Crunchyroll) 
Note: Includes Episode 0, which chronologically occurs between episodes 16 and 17.

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

Chichi, an ordinary office lady who works in Commercial Sector II of the solar system, heads to a space camp for a vacation. However, she crash-lands on a planet that is a "graveyard" for scrapped ships. 
(Source: Anime News Network)

 
Note: One of the four short movies created for the Young Animator Training Project Anime no Tane 2022.

The first film of the Dead Dead Demon's Dededededestruction duology.
 
The Japan Self-Defense Forces are still looking for a way to combat the alien threat, but so far conventional weapons have had no effect. Maybe it’s time to try something unconventional. 
 
Meanwhile, Kadode Koyama and her best friend avidly track the aliens’ movements on social media and less enthusiastically study for college entrance exams. When the end of the world looms overhead, you learn to take things one step at a time. 
 
(Source: Viz Media)

The anime is set in 2045, where the Internet and AI are commonplace even in space, and centers on a group of children stranded in space after a large-scale accident occurs in a space station. By using narrowband, social networking, and a drone that they can manipulate through smartphones and low-intelligence AI, they overcome many crises.
 
(Source: Anime News Network) 
Note: Also released in Japan as a 2-part film series with the same content, the first part showing in theaters simultaneously with the worldwide Netflix release.

Production +h