Azumanga Daioh (2002)

S1E4 Pool, Pool, Pool!

In the episode, we’re introduced to Kimura-sensei, the unsettling Classical Literature teacher for the girls. During gym class, the girls gather at the school pool, revealing their physical challenges and showcasing some of their unique personalities. While Nyamo attempts to instruct her students on swimming techniques, Yukari barges in with her usual rudeness. At Yukari's urging, she and Nyamo compete in a relay race in the pool. Following the race, the girls discuss the results and later spot Kimura in the park, sparking curiosity about what kind of person he truly is.