Higurashi no Naku Koro ni: Meakashi-hen (ひぐらしのなく頃に目明し編, When the Cicadas Cry: Eye Opening Chapter)Volume 1 is the eleventh volume of the Higurashi no Naku Koro nimanga as well as the first volume of the Meakashi-hen story arc.
ABOUT THE "EYE OPENING ARC" THAT WHICH EXPOSES "THE UNDERSIDE"
Based on the contents of the "Eye Opening Arc", you could easily call it the "Shion Arc".
Shion Sonozaki is Mion's younger twin. At the same time, she is the other side of Mion— or rather she is a character positioned on the other side of the story. She is the only one of all the heroines who doesn't live in Hinamizawa; She's not even allowed to live in Hinamizawa. While she is the spitting image of Mion, her existence is the exact opposite. So I think you'll understand that writing Shion's story is basically the same as depicting the underside of the world of Higurashi no Naku Koro ni.
The "Eye Opening Arc" starts in 1982, one year before the main story's setting in 1983. What underside will this arc expose? ...I sincerely hope you will continue to enjoy it.
When everything in the "Eye Opening Arc" is revealed...maybe it will spectacularly betray some of your speculation or your deductive reasonings or your expectations. but please, don't be afraid of that. Because those of you who experience that feeling are the ones who will have enjoyed the "Eye Opening Arc" most of all.