寒蝉鸣泣之时 绵流篇
Shion Sonozaki (Higurashi no Koki no Toki)
Twin sister of Mion Sonozaki.
Sonozaki Mion (Higurashi no Ko no Koki)
Club organizer and twin sister of Shion Sonozaki.
The cotton ceremony of the Menryu Festival
A festival held every June. Reina explained to Keiichi that people take cotton from unused bedding, express gratitude to the items that accompany their lives, and then put the cotton into the river; During the ritual, cotton that touches the forehead, chest, abdomen, and knees should be carried away by the water.
Komiyama (When the Cicadas Cry - Flowing Chapter)
During the Wataru arc, he investigates the Okimiya Dental Hospital, finds medical records of Takano Sanshi's wisdom tooth extraction three years ago, and informs Oishi of the discovery.
Mienryu Arc: Police report for the after-night festival
After Keiichi was hospitalized, the police investigation brought by Oishi did not match his own observations: Takano's burned corpse was estimated to have died earlier than the festival, and Shion's fall coincided with the time when Keiichi identified Mion as a girl attacked him.
When the cold cicadas cry, the Mianliu chapter
'When Higurashi Cries: Endless Flow Arc' is the second part of the original work, published in the winter of 2002. The Sonozaki sisters and the taboos in the festival become the center of the story, and Keiichi must recognize another side of the familiar character.