I don't really recall much of the book, just that I was so in awe of it and could possibly feel the way I felt when I read it the first time. Especially the forest/hill scenes. I think in the forest/hill, the dead comes back to life? One day, the kid (a girl I think) who lives in a small village nearby, goes to the forest/hill at night for something I don't really recall. There is a bridge that connects the village and the forest/hill. She has to go back to the village before the sunrise.
I am eighteen now and I was in elementary school when I first read it (around 2010-2012) so it might be a very old novel. It's by a Japanese author and not part of any series. I read it in Bahasa. The overal theme I remember is kind of a mix between horror, mystery, and adventure. Of course there are fantasy and folklore as well.