>hinako is actually severely ill like her mother (pic related)
>that's what hinako actually means when she says, she "doesn't want to end up like her mother"
>she rambles on and on about making her own choices on her own term, which the illness doesn't allow her to
>everybody talking about her as if she was already dead now making sense
>the red rot growing everywhere is the tumor spreading (in the dark shrine it's the red mist when she gets the intense headaches)
>shu just tries to heal her or at least ease her pain with the pills (for her "headaches")
>hinako's twin acts hostile towards her (pic related)
>shu's self-trial of the pills only caused meditative lucid dreams
>her delusions (caused both by the illness & the white claudia pills) intertwine, giving her lucid nightmares & interactions with her evil twin
>the game isn't about feminism in the end, but about fate
>the geysir is the true villain, poisoning the whole town
>the 'origami of fox prayers' alludes to how everybody except kotoyuki dies, because he is the only one who left the town and doesn't get poisoned
>girls disappearing from the town don't get 'spirited away to marry a fox', but lured by the rapist in the mountains and killed

actually the story is incredibly dark