Cause of cancer: Uncontrollably fond (you know, when you act, you have to get into the roll that you're playing... and that means a lot of thinking and believing that you're that person. So I believe that caused him to develop cancer.) (Just like the law of attraction.)
But NamShin3 already had feelings -> when he saw human Nam Shin he dropped flowers, so I guess he was surprised?? Or was it a mistake of scriptwriters?
(you know, when you act, you have to get into the roll that you're playing... and that means a lot of thinking and believing that you're that person. So I believe that caused him to develop cancer.) (Just like the law of attraction.)