Sato Toguchi (里 戸口) is the secondary antagonist of The Karate Kid Part II. Sato is the uncle of Chozen and was the owner of Sato's Karate, the biggest dojo in Okinawa. Sato was Miyagi's enemy until he saved his life.
Sato was born 1925 in Okinawa, Sato's father was the richest man in his village, who was best friends with Mr. Miyagi's Father, this caused Miyagi to be best friends with Sato they were taught Karate by Miyagi's father thus breaking the tradition of only father and son Miyagi members should be taught.
In 1943, Sato's father arranged him to marry Yukie, but Miyagi made a big speech infront of the whole village about breaking tradition of arranged marriage so he could marry Yukie, Sato felt disgraced and challenged Miyagi to fight to death to save his honor, but Miyagi not wanting his best friend to die left Okinawa by boat.
By the end of World War II, Sato 's father bought in a big commercial fishing boat and within two years all the fishes were gone: because of that most people went to Naha City for employment, while Miyagi's father and the other residents went into vegetable business. Sato owned the farms, which were rented by the village.
The Karate Kid Part II
Despite his coldhearted and cruel behavior, he is able to maintain his honor. When Miyagi's Father died in 1985, making clear that his last wish was for his son and Sato to reconcile, Sato set his revenge with Miyagi aside for the time being and gave him three days to mourn for his death as a way of honoring their teacher. He also honored his teacher by attending his funeral. Daniel is perplexed by Sato's insistence on honoring his sensei, to which Mr. Miyagi tells Daniel that deep down inside, Sato still knows wrong from right.
Another aspect of Sato's dual attitude was when Chozen threatened Daniel to break slabs of ice in a rough bar in Naha. Mr. Miyagi bet a lot of money that Daniel could do so (likely to get Chozen to back off), causing Chozen to protest he could not cover a bet like that. Sato, just having entered the bar, took out a wad of bills and told Chozen he will cover the bet. Daniel won the bet, causing Chozen to call off the bet, saying foreigners like Daniel and cowards like Mr. Miyagi do not deserve to win bets. An angry Sato pays off the bet, and sternly tells his nephew never to dishonor the family name again. Once again, Sato sets his hatred for Miyagi aside and does the right thing.
Sato's actions prove three things: 1. He values honor above everything, even his grudge against Miyagi, 2. He has self-control, 3. He is not truly a bad or evil person.
Sato, despite his anger and thirst for revenge, is unwilling to sacrifice his honor for the most part. He has been more than willing to do the right thing, even if it meant prolonging his revenge against Miyagi. Sato is truly an honorable person, unlike young Chozen, who boasted about his honor but all his actions showed him being dishonorable.
After Miyagi saves Sato's life during a terrible storm, Sato redeems himself by rekindling his friendship with Miyagi, helping rebuild the village, and rebuking Chozen's vicious and dishonorable behavior.
He and Miyagi support Daniel during his fight with Chozen by utilizing a daiko to help Daniel use the drum technique.
Cobra Kai Season 3
After Daniel and Miyagi's departure, despite his disgust towards his nephew's actions, Sato chose to help Chozen rather than abandoning him completely, preventing him from committing suicide. Sato saving his life and subsequent teachings helped to make his nephew a better person, one who also gave up on anything but a rather humorous revenge against Daniel and who dedicated his life to teaching others the things that he had learned.
Sato had also modified Tomi Village to become a tourist attraction sometime after Daniel and Mr. Miyagi's departure from Okinawa, as well as its reason to solve the drought that hit upon the village. His business decision boosted the local economy before his passing. For his action, Tomi Village's inhabitants hold his memory in high regard, as thanks to him they were finally free from the poverty Sato's own father brought onto them decades before.
- In The Karate Kid Part II, Miyagi says that him and Sato are the same age, placing his birth year around 1925.
- "Toguchi" (戸口) translates to "door" or "doorway" in English.