The female character(The Herione) on the side of the poster kind of looks like she is looking over them- with her eyes closed which conceivably implies that she either doesn’t lo

And this suggests that this is a drama, melodrama or even a tragedy, as the colour black dominates the poster and can connote mournfulness.
These aspects indicate that the movie is about a serious matter and something that will affect the audience which is what most Art House Film set out to do. Demographically the audience for this can be A or B