Saitama arrives just in time to save a severely injured and broken Suiryu from the monster Bakuzan .

Against Suiryu's warnings, Saitama heads off to find Gouketsu . He defeats the massive monster off-screen, returning with only its severed head as proof .

Despite Bakuzan’s transformation into a Dragon-level threat, Saitama defeats him with a single, casual punch that blows away the monster's upper torso .