In Cobra Kai, an adult Chozen is shown to have repented for his past mistakes, and makes amends with Daniel when the latter visits Okinawa during a trip to Japan.

He eventually becomes a sensei of Miyagi-Do, where he helps the dojo fight in the global karate tournament, the Sekai Taikai.

As a teenager, Chozen was quick-tempered, had difficulties with Kumiko, and was Daniel's rival (The Karate Kid Part II).

He tells Daniel that when he was young, he fell in love with a woman named Yukie, who was arranged to marry Sato (his childhood best friend, the son of the richest man in the village, and fellow karate student of his father).

When Sato sees a young girl trapped in the bell tower, he tells Chozen to help Daniel rescue her.

In 2018, after Daniel learns that his business rival Tom Cole has convinced Doyona Industries to cut their business ties with LaRusso Auto Group due to Daniel's reputation being tarnished by Robby's affiliation with Miyagi-Do and actions against Miguel during the school brawl, he travels to Tokyo, Japan to try to persuade them not to.

Chozen praises Mr. Miyagi, says he hopes he will be like him, and becomes overcome with guilt when he recalls his actions and how he treated Daniel three decades ago.

He says that after their fight, he was suicidal, only rescued by the encouragement of Sato to prove himself, and that is what he has been doing ever since, becoming a sensei in Okinawa and passing on the teaching of Miyagi Do to his students.

He then offers Daniel the scroll, telling him "You keep for your collection" (a callback to when he said the same thing to Kumiko, though in a lascivious context, during Karate Kid II).

Daniel has Chozen live in his house as they figure out a way to prevent Terry Silver's Cobra Kai from taking over the Valley.

While Chozen did not personally experience what Daniel did back in 1985, he realizes that Silver is a student of Kim Sun-Yung, a master of Tang Soo Do while watching him spar against an opponent.

However, he knows that Kim Sun-Yung taught a different method, one which he explains to Daniel is based on deception, without honor or mercy, a style considered controversial by other martial artists including Sato.

The next day in the dojo, Silver reveals that he knows Chozen's true identity due to this mistake, and has the remaining senseis attack him.

They follow him to his place of work, a furniture store in Agoura Hills and Chozen waits in the car while Daniel goes to investigate inside.

This results in Daniel destroying some of Stingray's property until Chozen points out that he won't speak because he is afraid.

Anthony gets the idea to put all of the eggs in a basket and work as a team to protect them, successfully fending off Chozen.

While in a party limo en route to another bar with Daniel and Johnny, Chozen finds the car doors to be locked when they seem to be going in the wrong direction and suspects that Silver has kidnapped them.

In the highway, Barnes is revealed to be the hijacker, who wants revenge over his life being ruined after his furniture store was burned, even accusing him, Johnny and Daniel if they're at fault even though they didn't.

When they explain that Silver was responsible, Barnes suggests they get payback on him, which Chozen and Johnny agree to, while Daniel refuses to, and leave him behind in the middle of the freeway.

Chozen ultimately survives and is put into an ambulance, being helped out by Barnes and Johnny just as they arrive at the Cobra Kai Encino dojo where Terry Silver had recently been defeated by Daniel and arrested for his crimes.

Chozen spends the summer in the LaRusso household and the massive wound on his back inflicted by Terry Silver's katana required him to get 80 stitches.

After making a full recovery, he aids Johnny and Daniel in training their students for the Sekai Taikai tournament, which will take place in Barcelona, Spain.

He tries to keep the order whenever Daniel and Johnny disagree on something related to their dojo, such as its official name or each other's opposing training methods.

Before Daniel, Johnny and their six best students depart to Barcelona for the tournament, Chozen schedules a flight to Okinawa to reunite with Kumiko.

Much to his shock, Kumiko is revealed to have already found a boyfriend, causing Chozen to go on a downward spiral and drown his sorrow in alcohol.

He secretly has one-night stand with Kim Da-Eun despite their dojos being rivals and the two of them join Kreese and Daniel as they discover Terry Silver had been freed from prison and become the business partner of Sensei Wolf and his formidable dojo, the Iron Dragons, to get his vengeance on Daniel, Johnny and Miyagi-Do for his downfall.

During the male captains match between Robby and Iron Dragon Axel Kovacevic, Senseis Ivanov and Oksana lead their Tiger Strike students back into the competition, knock out representative Gunther and his fellow chiefs and ignite an all-out war between dojos.

Chozen joins forces with Kim Da-Eun to take down the Tiger Strike senseis and the madness comes to an end when Cobra Kai top student Kwon Jae-Sung fatally stabs himself by accident with Kreese's eunjangdo dagger.

[1] The experience stayed with him, as he noted that "when you play such an iconic bad guy in a successful film, you kind of keep that memory always with you.

But I gave a little bit of input and the writers and also the producers, they really did a great job in capturing the essence of Chozen and how he would probably be after 30-odd years".