Nao Serizawa

As a third-year student at Iwatobi Junior High, this dedicated athlete serves as the swimming club's co-captain while simultaneously leading the library committee as president. He shares a close bond with Makoto and Haruka, witnessing their arrival as first-years. Following his time at Iwatobi, he transitions to Soufukan High School before moving to Tokyo to pursue a degree in sports medicine at Oudoukan University, marking his evolution from a school leader to a specialized medical student.