Myagi was pretty much a lousy apartment caretaker and a coward
while Myagi taught only one martial art to Daniel, Myagi was pretty much a lousy matinence repair guy at a apartment building and a drunk reclusie who ran away a coward from a personal rivalry from Okinawa.
Maybe if Myagi had stayed put in Okinawa then maybe Sato wouldnt have been so hell bent on killing Myagi due to a rivalry fued over whether Myagi's father or sensei was trying to keep the peace between them