This man is such a great actor. His deep voice and facial expression makes touching scenes even more touching and I will start watching ''I summon you gold'' only for him!
In my opinion the ending is very realistic. I mean at the end of the day, everybody can't live in happiness. why? Because this is life. The world we live in is unfair and in Shi Hyun's case, he had too many enemies to escape from. And IF he would have escaped from them, the ending would've been very unrealistic, he fighted against gangesters, you know how they are. This is a perfect drama with a very good and realistic ending. Don't complain. Peace and love! :)