ZE:A member Hyungshik's 'breathtaking back side' picture is gaining much attention.

A recent still shot of ZE:A's "Phoenix" music video was revealed online.

In the picture, Hyungshik shows off his sexy back line through his revealing outfit.

Internet users commented, "I love how he is so tall" and "This is what you call breathtaking."

ZE:A is currently performing "Phoenix."