Chapter 1: Well, kinda confusing at first but once you grasp the storyline, you will be able to understand what's going on. ^^
This genre requires the readers' deep imagination and emotion, so most probably the interpretaion will depends on how one preceives it.

At first, it reminds me of the series Angel Eyes, because of Chaerin's special condition...but towards the end, it could be something as far as Pure Love (49 days). Nice fic. ^^