S3E03 First Swim in Another Country!

First Swim in Another Country! (異国のフィストスイム！ Ikoku no Fisuto Suimu！) is the third episode of Season 3 of the Free! anime and the twenty-eighth episode of the overall series. It aired on July 25, 2018.

Synopsis
While training in Sydney, Australia, Rin Matsuoka meets Natsuya Kirishima, Ikuya Kirishima's older brother, who is currently racing in international relays for cash prizes. Natsuya wants seasoned coach, Mikhail Makarovich Nitori, to become his coach, but Mikhail says he lacks the proper muscles and that his focus seems to be elsewhere. Rin doesn't hesitate to point out Natsuya's unhealthy habits, while Natsuya teases Rin about his divided thoughts regarding certain friends. Their camaraderie leads to a race aborted by rain with Natsuya returning to Japan for Ikuya, as well as to seek out Nao Serizawa, his own close friend since middle school. Meanwhile, Haruka Nanase, Makoto Tachibana and Asahi Shiina try to figure out a way to talk to Ikuya.

Source: Wikipedia, with author's permission.

Characters
List of characters in order of appearance: