This manga adapts Hinamizawa Teiryūjo, the unreleased stage play that Ryukishi07 wrote and eventually transformed into the Higurashi no Naku Koro ni game/anime/live-action franchise.

In the recesses of mountain... there's a bus stop at outskirts of a village, it's called "Hinamizawa bus stop". Rika, a female high-school student, together with her junior, Mion visit this place. Twisted relationships that are concerned with the dam construction in Hinamizawa, and the stories of the curse of "Oyashiro-sama" that takes root in this area. What waiting for them is a tragedy, or else...?