Honestly...this was so funny.
Don't get me wrong: I think the story could be quite interesting, only if it wasn't squished into 30 minutes. It has great potentional value for a BL series - something like Peach of time, but horror.
My main issue with the storyline is that Minwoo hasn't got a single understandable reason to curse Hajun. Minwoo was portrayed a bit manic and crazy, but I didn't get his intention and reason to do the voodoo sh*t to Hajun. Also we have no idea how did Minwoo get into voodoo or whatever witchcraft he is into.
The relationship between the ghost and Hajun is basically only sexual. They make it look like they fell in love, but it is nowhere to be based on in the film. I can't even tell that they had any feelings towards eachother. The sexual scene was...something else tho. It is veeeery veeeeeeeery in close ups. The butt detail scene actually made me laugh out loud. It was so close up!
I feel like this would fit very well into a whole series, rather than an amateur short film. The characters didn't get enough time to show what they're really like, the whole reason behind Minwoo cursing Hajun is nonexistent basically and the love between Hajun and the ghost is nowhere to be found.
Overall it could be really fun to watch while you're drunk and with friends, it has a potential in this way.
I would not watch it sober again tho :D