[Guess] Whose sexy back is this?, Korea , Kpop

https://top-korea.blogspot.com/2012/02/guess-whose-sexy-back-is-this-korea.html

Do you have any idea who is showing off his sexy back in the photo above???

Please make a smart guess,answer will be revealed soon!

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Do you have any idea who is showing off his sexy back in the photo above???

Please make a smart guess,answer will be revealed soon!