From Yen Press:

After a year at boarding school, Shion Sonozaki flees the oppressive institution and secretly returns to her hometown in the mountains, telling only her twin sister Mion of her arrival. Though the Sonozaki family has kept the sisters apart to prevent conflict over who would become the next family head, Mion and Shion have remained close — enough so that Shion can easily impersonate her identical twin. When Shion encounters Satoshi Hojo in town, he is completely taken in by her “Mion” disguise. And Shion is quite taken with him…

The story of Higurashi no Naku Koro ni is divided into a total of eight chapters: four "Question" arcs and four "Answer" arcs. Each chapter keeps the same main characters, but ends in a different way. However, each chapter gives valuable answers, hints, and clues to the previous one, while at the same time bringing forth even more mysteries.

The question arcs are:

1. Higurashi no Naku Koro ni - Onikakushi Hen
2. Higurashi no Naku Koro ni - Watanagashi Hen
3. Higurashi no Naku Koro ni - Tatarigoroshi Hen
4. Higurashi no Naku Koro ni - Himatsubushi Hen

The answer arcs are:
5. Higurashi no Naku Koro ni Kai - Meakashi Hen
6. Higurashi no Naku Koro ni Kai - Tsumihoroboshi Hen
7. Higurashi no Naku Koro ni Kai - Minagoroshi Hen
8. Higurashi no Naku Koro ni Kai - Matsuribayashi Hen

The side story arcs are:

• Higurashi no Naku Koro ni - Onisarashi Hen
• Higurashi no Naku Koro ni - Yoigoshi Hen
• Higurashi no Naku Koro ni - Kataribanashi Hen
• Higurashi no Naku Koro ni Kai - Utsutsukowashi Hen
• Higurashi no Naku Koro ni - Kokoro Iyashi Hen
• Higurashi no Naku Koro ni - Hirukowashi Hen
• Higurashi no Naku Koro ni Jan - Tsubamegaeshi Hen
• Higurashi no Naku Koro ni Rei - Saikoroshi Hen