Kim Sung Cheol said, "First, he is someone I have a lot to learn from as an actor. I am someone who works really hard, but Minho works really hard as well. We had to express that the food was unappetizing in a scene where we were eating a meal, and the food that was delivered was just plain rice. In order to realistically portray I mixed it with sand and ate it. Minho saw this and also tried to do this. That is how great his passion is. Minho got in an accident while filming. He got an injury on his face and that can be scary as an actor. But he tried to recover as quickly as possible in order to return to the film and I thought that was amazing."

Moreover, Kim Sung Cheol also then shared what Minho was like off-camera. He explained, "Minho has the image of an upright man and he is upright like his image but is also very playful in real life, including myself, the actors playing student soldiers are out of their minds. Seeing this, I think Minho was itching to do something. Minho said, 'There are not many people who know what I am really like' and showed a lot of his true self during the filming."

He once again added, "Actors are often careful even among other actors in case the other person will think negatively of them if they reveal their true selves. I was grateful that Minho had an open mind on set. All of the student soldier actors accepted one another other no matter what we did, and we understood each other. We still have a good relationship."

On the other hand, film director Kwak Kyung Taek appeared as a guest on Entertainment Weekly for a live interview. He said, "For three months, I had the mindset that I would do my best to film "Battle of Jangsari" the actors worked really hard too. Out of the lead actors, Minho got injured and still filmed. That is what I am most grateful for."