Following the release of its theatrical conclusion earlier this year, the ripples from the decade-long Free! – Iwatobi Swim Club franchise will still be felt next year at a 10th-anniversary event that was just announced for August 13, 2023 at Saitama Super Arena, starring voice actors Nobunaga Shimazaki (Haruka), Tatsuhisa Suzuki (Makoto), Mamoru Miyano (Rin), Tsubasa Yonaga (Nagisa) and Daisuke Hirakawa (Rei).
In elementary school, Nanase Haruka, Tachibana Makoto, Matsuoka Rin, and Hazuki Nagisa attended the same swimming class together.
Soon enough, Makoto and Nagisa also rejoined the group, and along with a new classmate, Ryugazaki Rei, they established the Iwatobi High School Swimming Club.