‘Cobra Kai’ stars Ralph Macchio, William Zabka and Yuji Okumoto chat with ET’s Ash Crossan about whether their characters’ stories are really coming to an end in the final season of the ‘Karate Kid’ spinoff series, with part 1 premiering July 18 on Netflix. The three senseis weigh-in on the final season’s three-act structure and whether it’s really the end of ‘Cobra Kai.’