Sousuke Yamazaki

A talented third-year student at Samezuka Academy, this skilled athlete specializes in butterfly and freestyle swimming. As a key member of the academy's competitive swim team, he shares a profound, lifelong bond with his childhood friend, Rin Matsuoka. Having grown up together since elementary school, he serves as Rin's most trusted confidant and remains the person who understands his complexities better than anyone else.