Hyung Kwon fought under Lethwei rules at the "2017 Lethwei in Japan Grand Prix" event, taking on a wiley Burmese slugger in Soe Htet Oo - at the Korakuen Hall in Tokyo. 

For the duration of the contest both fighters opted to engage in a 'rock em sock em' winging wild punches, while Kwon was the one mainly on the receiving end of kicks. After settling in Kwon began to add up takedowns and throws from  his clinch knocking the wind out of Htet Oo, while also finding a home for his power punches against the Burmese veteran as the fight progressed. After 4 hard rounds the fight was declared a draw.