The films “The Karate Kid” and “Cobra Kai” all provide an insight into Miyagi’s fascinating life story, beginning with his life in Okinawa. Miyagi’s father was a fisherman by trade and continued the tradition of teaching his son Miyagi-do karate. As revealed in “The Karate Kid II”, Miyagi convinced his father to teach his friend the family skills. This friendship soon went south, and Miyagi chose to move to the United States rather than fight him. He met his future wife in a Japanese detention center, where they married. He then fought in World War II and was awarded the Medal of Honor. Upon returning from the war, he discovered that his wife and their unborn child had died, leaving him alone (per Screen Rant). Not much else is known about Miyagi’s life until he meets Daniel LaRusso four decades later.
Ralph Macchio, who plays LaRusso, gave an exclusive interview to Screen Rant, with the publication noting that while “Cobra Kai” fills in some of the blanks in Miyagi’s backstory, so much remains unknown. When the topic of a prequel series came up, the actor said, “How can we not explore the backstory and origin of Miyagi-san? And what happened? What brought him to this place, to work in this apartment in Reseda? What was his life like before that? I think that would be fascinating.”