This is a beautiful movie. In particular the interior of houses are cozy with nice furniture. It does not look expensive but quaint and old. Outdoor and nature locations look picturesque, but with no landscape panoramas.
Many special effects seem to be physical, and there are not many computer-made monsters in this horror movie. This makes things look more natural, and it makes the movie seem older than it is.
Music is also added in a tasteful way. I recognized the song Spring Breeze (piano version) from the visual novel Clannad. Maybe the movie bought the rights to use it.
If you want to watch it, prepare to be confused for at least the first 20 minutes. First because there are no sisters anywhere. The problem is not a mistranslation of the title, becuase it literally contains the word "sisters" in Chinese. In China, like in English-speaking countries, it is possible to call a friend a sister or brother, so maybe that is what is meant.
A second source of confusion is that the action in the very first scene is carried out so incompetently that it is hard to understand what actually happens.
After around 20 minutes, the main story stabilizes a bit, but it can still be chaotic or illogical at times. There can be unexpected jumps between locations, or people can show up where they have no reason to be. Not because the plot is intelligent, but because of bad editing and a failure to communicate the action precisely. At least there is no way you can guess the ending.
Maybe the chaos is just a symptom of too many ideas, and that there are many things going on for its length of only around 80 minutes. That is not necessarily a bad thing if it increases the entertainment. Additionaly, the many cute or funny scenes makes it anything but boring.
