Spoiler Warning!! [+/-] Show/Hide Synopsis...
During Rika's ritual performance at the Watanagashi Festival, Shion whisks Keiichi away to sneak into the forbidden shrine warehouse, where Tomitake and his lady friend Takano are waiting. Takano shows them the torture implements inside the warehouse, and explains the history of Hinamizawa and its denizens' demonic blood. After they part ways, Mion finds Keiichi and questions him about his whereabouts. Keiichi lies to her, claiming that he was watching Rika the whole time. The next day, Shion calls Keiichi and informs him of Takano and Tomitake's deaths, which causes him to get scared of Oyashiro-sama's curse. Keiichi blames Shion for dragging him into the shrine, but when she hangs up abruptly, Keiichi suddenly realizes that it might not have been her.