Group JYJ's member Yoochun said goodbye to his fans.

"A goodbye to his fans before going into the army," posted CJs Entertainment on its Instagram on Thursday along with a short video.

"A post from Yoochun about going into the army will be released tonight at 9PM through Facebook. #Yoochun #Healthy #armyenlistment," the post said.

In the video, Yoochun says, "I'll be back safe! Goodbye" as he's waving his hand at the camera and smiling.

Yoochun enlisted in the army on Thursday and will finish his service in May 2017.