Super Junior Leeteuk recently revealed his back muscles, surprising fans.

On Sunday, Leeteuk wrote on his Twitter saying, "An outfit revealing my back. You didn't know right? I'm going to delete it soon so look quick" and revealed the photo above.

In the picture Leeteuk is seen posing, showing off his bare back and muscles, revealing his muscular body.

Her surprised viewers with his toned body, flaunting his manly charms and attracting his fans.

Internet users commented on the photo, "After seeing his back muscles, I realize that he is manly," and "Looks like Leeteuk has been working out hard."