Swimwear, Etc.
It's swimming time! Naturally, the boys can't stop trying to take a peek at what their female classmates look like in swimsuits. However, something unnatural is going on with the sizes of the girls' bodies... Literally.
Aired 03/11/2021EP 4 - Swimwear, Etc.

2021
KAGINADO
Laughs and shenanigans are on the horizon in this crossover! Fan-favorite characters from Kanon, Air, Clannad, Little Busters!, Rewrite, and more start the school year together in a new world where anything is possible. With so much personality in one anime universe, every day feels like a new kind of dream.
(Source: Funimation)