"Mr. Temporary" will tell the story of a mysterious murder that occurs at an elite high school and a lawyer that goes undercover to uncover the truth and secret behind this death case.

Jun appeared as the lead character in the story named Yoo Beom who is part of a four-member friend group and is perfect in every ideal way. Jun shared, "The filming felt short, it was to the point that I wondered if it was okay for it to feel this short. After it was over, I felt sad and mixed feelings. I worked with such good people that I did not want the project to end. It was nice overall."

Regardless of being his first starring role in a drama industry, Jun still showcased his outstanding acting skills and he perfectly portrayed his character who has this drastic mood swings in the story.

"I was lucky and got to work with really great people, I didn't even have time to feel satisfied. I worked with good people and felt especially grateful to Yoon Kyun Sang despite being older than me he approached me first and worked hard to tear down the wall between us a senior and a junior. So my respect for him grew more. If I had to express my satisfaction, it had to be 100 percent. It was my first time appearing in a drama of this genre, and I was satisfied because I became more detailed at building a character. I was shocked in the middle of the drama when I found out that my character was criminal. Your acting is different when you do not know versus when you know the criminal. In the beginning, I acted while thinking that I wasn't the criminal. After learning that I was the criminal, I felt like I was the criminal no matter what I did while acting." Jun once again stated after knowing that his role will be a criminal in the story.