In Divorce Attorney Shin, Choi Jun, Sung-han‘s new employee, is forced by Yu-seok to spy on Sung-han, but since he is anything but subtle, he fails to keep this a secret. Choi Juun plays Han Jae-seok.
Choi Jun is one of the minor characters in Divorce Attorney Shin who works for Sung-han. Before working for him, he was interning for one of Sung-han’s greatest enemies — Yu-seok.
Choi Jun refused the position that Yu-seok was offering him at Keumhwa Law Firm and chose to work for Sung-han, who only gained recognition after winning Seo-jin’s case, but Yu-seok was not going to let him leave so easily.
Choi Jun, aka June Man
One night, after drinking with Hyeong-geun, a drunk and upset Sung-han comes across a piano and starts playing it. Someone called “June Man” records him and posts the video on the internet.
The next morning, when Sung-han finds out that his video is going viral, he messages June Man, asking them to take it down. Much to Sung-han’s annoyance, June Man refuses, as this is now one of their most popular videos online.
June Man is none other than Choi Jun, the top intern at Keumhwa Law Firm. As his internship is about to end, Yu-seok gives him one last task; he asks him to find out whatever he can about the case that Sung-han is handling at the moment.
However, when Choi Jun realizes that Sung-han is in fact the Piano Man, he starts admiring him. When Sung-han agrees to represent Ae-ran, Yu-seok makes Choi Jun represent her husband.
Even though he is going to fight Sung-han in court, he approaches him before the divorce mediation to tell him that he finds Sung-han cool and keeps smiling at him during the mediation.
He then quits his job because he wishes to work with Sung-han. Like Sung-han, Choi Jun used to play the piano, but he was not nearly as good as Sung-han.
When he comes looking for a job, Sung-han tells him that they are not hiring anyone as of now. However, Choi Jun knows that it would benefit Sung-han to hire another attorney because he’s been getting several new clients after Seo-jin’s case.
Choi Jun then reveals to him that he is June Man and that he is willing to take down the video if Sung-han agrees to hire him. Sung-han, who has been very frustrated because of June Man, attacks Choi Jun.
Eventually, Hyeong-geun has to come to Choi Jun’s rescue. He acts as a mediator and convinces Sung-han to hire Choi Jun, who finally deletes the video.
Choi Jun is just as strange as Sung-han and his friends. He even goes camping with them, and Seo-jin tells Ms. Kim that another weirdo has joined the three weirdos.
Choi Jun as a spy
When Choi Jun was interning at Keumhwa Law Firm, he was asked to spy on Sung-han. He followed Yu-seok’s orders, but Yu-seok uses this to blackmail him later on. He wants Choi Jun to continue spying on Sung-han for him if he does not want Sung-han to find out that Choi Jun had spied on him earlier.
A confused Choi Jun does not know what to do, and he tells Hyeong-geun everything honestly. Hyeong-geun then takes him to Sung-han and helps him confess the whole truth.
Contrary to their expectation, Sung-han does not get angry. In fact, he asks Choi Jun to be a good spy and not to do it for free. He wants him to charge Yu-seok and then treat everyone with that money. Too eager to please Sung-han, Choi Jun promises to not let him down.
Choi Jun keeps Yu-seok updated on Sung-han’s activities for a while, but when Yu-seok introduces him to Yeong-ju, he tells them that Sung-han knows about the whole affair.
When they ask him if Sung-han has anything that would help him win Chun-seok’s case, he refuses to give them any information without getting something in return. He asks for Yu-seok’s position in the company, knowing that they would never give it to him.
Choi Jun narrates the whole incident to Sung-han and Hyeong-geun because he is loyal to them. This is not the end of his spying activities; he is soon asked to spy on his first client’s husband by Seo-jin.
Choi Jun follows him and finds out that Min-jeong’s husband is not what he seems to be. With this information, Choi Jun and Seo-jin will be able to help her better.
Although Choi Jun is a quirky man who likes telling stories to make himself look like a hero, he was still the best intern at Keumhwa Law Firm. He will soon get to prove that he is a competent lawyer, as he will be seen representing Min-jeong in the upcoming episodes.