A Man Called God
신이라 불리운 사나이 (original)
He left Korea a helpless child. He has returned possessing lethal skills. His enemies' days are numbered.
Starring Song Il-gook, Han Chae-young, Jung Dong-hwan, Yoo In-young, Cho Jin-woong, Nam Da-reum, Choo Ja-hyun, Lee Bo-hee
It's a drama and action & adventure show, and has a rating of 6.2 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from United Kingdom.