On December 28th, SS501‘s Kim Hyung Jun shared a sel-ca from the set of the poster filming for his KBS drama, ‘She’s Completely Insane‘.

Fans were surprised to see how much skinnier he had gotten, leaving comments like, “You already had such a tiny face, but it’s become more gaunt,” and “He must be working really hard on his acting, he’s gotten so thin.”

His company revealed that he had actually dropped about 8 kg since starting the drama. “He’s had to exercise a lot to get in character, and that resulted in a 7~8 kg weight loss. Instead of worrying, we hope that people will look forward to the drama, as he is trying his best for the screen.”

Fans need not worry, as Kim Hyung Jun assured that he had been exercising for his health and now had a body as hot as any other ‘best body’ stars.