Gachinko Battle: Balls-to-the-Wall

Welcome to the 1919th annual Balls-to-the-Wall Tournament, a martial arts competition where the strongest fighters in the mortal realm put their lives on the line for the chance to be granted a single wish. Only thing is that the gods, capricious as they're known to be, tend to tweak their definition of what counts as “martial arts” based on whatever sounds interesting at the time. This year, they've decided to spice things up with a special ruleset: first to make their opponent cum takes home the trophy!