I'm on a mission to finish the books I'm still 'reading' on here, so I finally knocked out the last chapter today after reading the first three in June! Weirdness typically of Sayaka Murata, but pretty interesting. I like that it was split into four stories. If/when it gets an English translation I'd read it again. There were some really thoughtful premises that I'm not sure I was able to 100% wrap my head around.