Keiichi goes with Rena to retrieve the Colonel so she can take him home with her. Later, Keiichi and his friends have fun at the festival and watch Rika performing the ritual.

Inside the sacred shed Keiichi learns about the dark origins of the Hinamizawa village and the Festival. The day after he finds out that Miyo, Jiro, and the village mayor have gone missing.

Keiichi learns more about Satoko's painful past, which causes him to care for her even more.

Rika makes a decision; Rika and the club members visit a toy store in Okinomiya.

Satoko finds out that some non-looping people retain a fragment of memory from the loops she lived through. One of those people is her uncle Teppei.

Mion begins to develop feelings for Keiichi. Posing as Shion, she delivers a dinner box to him to thank him for giving her the doll. While working at a games shop one evening, Mion runs into Keiichi and Shion who appear to be on a date. After Keiichi and Shion leave together, Mion becomes tearful and angry. On the night of Watanagashi, Shion and Keiichi sneak into the ritual storehouse while Mion wonders about their whereabouts. Mion begins to scratch her neck after Satoko suggests that the two must be off alone together.

Hanyu reminisces about her past and her relationship with Rika in the Sea of Fragments. Satoko overhears Hanyu telling Rika about a sword hidden inside in the ritual storehouse that can kill someone living in loops.