No one can say he isn't a trooper.

Despite a doctor's order that he should take three weeks of rest after a torn ligament in his shoulder was discovered, JYJ singer Park Yoochun is reportedly planning to continue shooting the political drama "3 Days," slipping on a sling between takes.

"Park Yoochun felt pain in his shoulder while he was filming '3 Days, so he went to the hospital and received an MRI." a rep for JYJ's record label C-JeS Entertainment told the Korean media outlet Newsen on Thursday.

"The MRI results showed that there was a problem with his shoulder ligament. He needs about three months of rest, but with the first episode broadcast ahead of him, he decided to continue filming as he can't fix his schedule around."

"To make sure his injury isn't strained, he's wearing his sling whenever he's not filming," the rep added.

"As for rest, we think it'll be possible after the drama's end."

"3 Days" was written by Kim Eun Hee, whose past credits include the television dramas "Sign" and "Phantom." Director Shin Kyung Soo is best known for his work on the drama series "Deeply Rooted Tree."

"I chose the drama after reading through the scripts," Yoochun told the publication eNEWS earlier this month.  

"I thought, 'Kim Eun Hee doesn't let anyone down,' and I had my trust in the drama's production team, including director Shin Kyung Soo. I've been working hard to do my best in the performance."

"3 Days" premieres on the Seoul Broadcasting System television network on March 5.

The plot revolves around the South Korean president disappearing while on vacation after several gunshots are heard fired. As his head of security, it is the job of Yoochun's character to find the politician.