Gou Matsuoka

Gou Matsuoka is a first-year student at Iwatobi High School. An energetic classmate of Hazuki, she brings a bright presence to her school days. Despite her cheerful disposition, she carries a deep concern for her older brother, Rin Matsuoka. Her personality is defined by her devotion to him and her constant focus on his well-being as she lives alongside his intense swimming journey.