Watch Online Free on Watchseries. Osaka Tough Guys stars Kentaro Nakakura and Yoshiyuki Ohmori. It tells the story of two hoods forced to take on paid work when they run out of money for booze, who end up being drawn into the spiderweb of the yakuza. Gaijiro Saito and Sei Hiraizumi co-star. ~ Nathan Southern, Rovi