This is not a BL, and barely qualifies as LGBT. While the perspective character is a gay man, the story is entirely about a woman, and while her sexuality is not irrelevant to the plot, it doesn't revolve around it either.

The poster is really deceptive, and I feel sa if I was tricked into watching it.

It's shot well and the acting is good. The music is minimalist, but does a good job of supporting the film. This was well-done, but when it's over you may ask yourself what was the point of it.