The Long Goodbye
Nagara and Rajdhani arrive in a world called "Filmmaker," and discover a movie filmed entirely from Nagara's POV. Mizuho discovers a stray dog by the name of Yamabiko, claiming to be another castaway who attended the same school as the other students.
Aired 20/08/2021EP 6 - The Long Goodbye
2021
Sonny Boy
It’s an ordinary summer vacation...except for the fact that Nagara’s high school has mysteriously drifted into another dimension. As the students begin to develop strange new powers, will they work together to survive the alien environment and find a way home, or will their newly formed factions and rivalries turn on each other?
(Source: Funimation)
Note: The first episode received an advance release on YouTube on June 19, 2021. The regular TV broadcast started on July 16, 2021.