"Hey, you got 500 won?" Taehoon Seong (성태훈, Seong Taehoon) is a main supporting character from the Webtoon known as How to Fight/Viral Hit. Taehoon Seong is the son of 'Taekwondo legend', Hansoo Seong. Since young, he was considered a prodigy in the sport, having even made an appearance in a KBS show, where he beat a high schooler while still in primary school. He was nicknamed 'spin genius' because of his talent for executing spinning kicks in a fight. He had been training in Taekwondo since he was young in his father's dojang, who was a former gold medalist.