Responses
That's cause Charin has enough death flags to cloak a country and the author seems unmerciful. In terms of actual development it's definitely Charin x Jin all the way.
Spoilers
Charin's almost dying words were that he was only pround of two things in his life and both points can be summarized as 'Jin loved me'
Dang I adore Charin x Jin but why do I get the feeling that they aren't going to end up together...