From Yen Press:

Rena Ryugu has made a lot of great friends since returning to Hinamizawa a year ago. But the happiness of playing with her classmates can hardly make up for the sadness she feels at home. Her father’s new lover spends more and more time at their house, making Rena feel that she is no longer as needed as she was when her mother first abandoned the family for another man. Rena thought that coming back to the village would end the curse that tore apart her family and her mind, but she can’t shake the feeling that more heartbreak is in store…

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

Note: Renapan will be counted as part of both Eye Opening and Atonement arc instead making a separate entry. As per description says, it's a gift for those buying volume 3 from each series. Technically it's still an extra story. Not standalone like other Higurashi titles.