Winner of multiple gold medals, Daiya Seto is a professional swimmer from Japan. He specializes in individual medley, butterfly, breaststroke, and freestyle competitions. At the 2012, 2014, 2016, 2018, and 2021 world short course championships, as well as the 2013, 2015, and 2019 world long course championships, he won the gold medal in the 400-meter individual medley. In the 200-meter short course butterfly and the 400-meter individual medley, S...