Twins Shion and Mion have Keiichi seeing double. But as he grows closerto Shion, their flirty friendship has Mion seeing red. When Shion andKeiichi trespass on sacred ground the night of the Cotton Drifting, astring of gruesome murders and disappearances follow. Are the legendsof Oyashiro-sama's curse true? Is there a demon in Hinamizawa?