Isekai Quartet: The Movie – Another World

Isekai Quartet: The Movie – Another World is a 2022 Japanese animated film featuring a crossover between the chibi-style characters of the light novel series Overlord, KonoSuba, Re:Zero, The Saga of Tanya the Evil, and The Rising of the Shield Hero, which were published by the divisions of Kadokawa Future Publishing. Produced by Studio Puyukai and distributed by Kadokawa Animation, the film was written and directed by Minoru Ashina. In the film, a wormhole brings Class 1 and 2 students to another world where out-of-control golems exist.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.