In the fifth and final loop before Rika calls it quits, Satoko wakes her up in bed as usual, but she has a heavy fever and hurts “all over”. Turns out she’s already dead right out of the gate—she just doesn’t know it yet. In this loop, Satoko is the neck-scratcher, and has already killed everyone else. The Oyashiro-sama in her head has told her the priestess-hood must pass from Rika to her.
What awful sin has caused Satoko to be compelled to disembowel a conscious Rika and hack away at her guts with a ceremonial staff? The simple reason that Rika wished and dreamed of leaving Hinamizawa, abandoning Oyashiro-sama and everyone she knows for a sophisticated life elsewhere. There is no greater sin for a priestess than to forsake their deity thus.
But before she dies, Rika expresses her sorrow and guilt and essentially begs for forgiveness, which Satoko is sure Oyashiro-sama will bestow upon her if she’s serious in her contriteness. The younger and older Rikas converse in an idealized Hinamizawa and wonder why their dreams ever strayed from the village. Then, as Satoko embraces her, hopeful that things will be better next time, Rika closes her pinky and snaps.
Satoko wakes Rika up as usual, only this time outside. Rika’s guts are where they belong, inside her body, and the whole gang is in their bathing suits for a day of summer fun in the river. It’s Higurashi’s version of a beach episode, portraying the Sonozaki twins in bikinis and the other girls in school swimsuits.
As the sun goes down, Rika talks to Satoko about a realization she hand about two very long, very different dreams she was having. One dream was painful while she was liviing in it, but looking back knows it was full of “shining wonders”. In her other dream, she never noticed those wonders, and was punished for clinging to an “ungrateful” dream (the one where she leaves town for a fancy school).
Rika concludes by saying she loves Hinamizawa, and everyone in it, and Satoko, almost serving as a proxy to Oyashiro-sama, embraces her once more, glad to have heard Rika speak such words. With Rika no longer dreaming of being anywhere else, her curse is seemingly lifted. No one gets the neck itch, nobody kills or dies, and everyone watches her perform the Watanagashi dance.
Then Rika spots Tomitake wandering into the woods and she stops him to say something about her and Takano, only for Takano to emerge from the trees. She wants to talk to Rika too. I wonder what about, and if and how this latest loop, so ideal and peaceful so far, will suddenly go sideways.