If you watched Higurashi no Naku Koro ni and are thinking about watching Higurashi no Naku koro ni Kai, you definitely should. The series is really incomplete without watching both of them. I loved this series so much. The story was really amazing. The only problem with it was that the art wasn't that great. Mostly because the heights of the characters kept changing a lot. XD But it's easy to get over that.