Someone may need to tell 27-year-old JYJ singer Park Yoochun that he isn't actually protecting the president.

Despite a shoulder injury that threatened to derail production of the upcoming Korean television drama "3 Days," in which Yoohun plays the president's personal bodyguard, the actor has fought through the pain and continued filming.

His tenacity has not gone unnoticed.

At a press conference on Tuesday for '3 Days,' which premieres on the Seoul Broadcasting System (SBS) on Wednesday, the show's executive producer Kim Young Sup expressed his deep appreciation for Yoochun's efforts.

"Actually, Park Yoochun is still struggling to film now," Kim said, according to the publication eNEWS.

"He tore his [shoulder] ligament while he was filming an action scene, but has been continuing to film. He received acupuncture treatment and even has a physical therapist at the filming site. He also caught a cold as he filmed the movie 'Sea Fog' a few days ago."

The accomplished producer, whose credits include the 2011 SBS programs "City Hunter" and "Midas" claims Yoochun's hard work has made his job much easier.

"As the show's executive producer, I feel thankful for his hard work and dedication," he said. "Even though he joined the cast a bit later than others, he has been working really hard."

Yet Yoochun is apparently taking the whole thing in stride.

In an interview published Monday in the Korea Joongang Daily newspaper, the JYJ singer-turned actor expressed his fondness for the role.

"I'm glad I was able to get this opportunity to be a part of '3 Days.' I have portrayed various characters in all the different television dramas I've appeared in, but I think the job of a bodyguard is more special," he said.

 "A bodyguard does not hesitate to give his life for the President. That's a rule for him."