I saw the poster, I also saw the trailer...
Alas there is no stylistic unity between the two.
Poster: slogan "One More Step ' in a sunny day
Trailer: Candle & rainy day, a girl is crying and probably wants to commit a suicide .
A very "optimistic" trailer, ideal for a festival in full summer

Smart guys, for that is necessary the unitary vision of a screenwriter - Creative consultant ~~~