Back of Park Si Hoo

Park Si Hoo's fans always recognize his back!

Why ?

Because it's special! 

Because it's unique! 

Because it's.....so sexy!^^

Camparison is cruel but let's do it just once!^^

Now...this is the most recent one!

Don't say you have no idea, which back is his!

How about yourself, Park Si Hoo?^^

Huh! What about my back?
You guys talking behind my back again!

Credit : Jundool3535, thank you!