Does anyone knows is this from a manga or is it an illustrator drawing?

Its this one.~ :)
http://www.mangago.me/read-manga/brother_x_brother/

K-drama:

K2.

Descendants of the Sun

Full House

-the girl who sees smell
-doctor stranger
-yong pal
-lets fight ghost
-love rain
-missing you
-my girlfriend is gumiho
-angry mom
-train to busan (movie)
-the king 2 hearts >> my most favorite (=・ω・=)
-scarlet heart ryeo (ongoing)
-jealousy incarnate (ongoing)
-moonlight drawn by clouds (ongoing)
-k2 (ongoing)
,,etc

Thanks Gore Whore. Love the name BTW and thanks to everyone for the kdrama recommendation ヾ(☆▽☆)

No problem.~ :D Haha thank you too! :D