I'm pretty sure that bit at the end implied that another version of themselves was left behind on the train and died some sort of terrifying, horrible death.
So like... that conversation that Kozakura heard. That was definitely their voices from an alternate timeline or something. Like if they hadn't been able to get away from the monkeys or something.
I know that her power fading was a great thematic choice, but also it's a shame they can't have raunchy sex in public while time is stopped. That would've been extremely based.
Damn did Himeko get raped again? And not even by Chikane? I'm getting into this a lot and I know its just going to end it heartbreak. Why goddamnit, why.
Hmm, it was more impactful in the LN. Since we've already seen a spiral monster it wasn't quite as gross and scary. But it was still a great chapter. Art looks fantastic and the translators have done a really good job too.