Relations between Japan and South Korea have been strained ever since the Second World War, spilling over into other territories such as sports.
In the constantly-growing world of martial arts, the patriotic rivalry between these two nations has played itself out in rings or cages across Asia for almost two decades.
Several traditional forms of martial arts could trace its origins in Japan, but many people tend to forget that the country likewise served as one of the starting points of mixed martial arts.
