I have really enjoyed reading about Obon traditions and looking up pictures (especially of the cucumber/aubergine animals and the odd batmobile) 
As for Yuu, the same things stood out to me as @omk3 mentioned. I am really intrigued to see what his situation is like, but also dread to read more.
As for Kise, Natsuki and the mother… Again, much agreeing with @omk3. I think this week it has become even clearer that the mother actively favours Kise to the dentriment of Natsuki. The choice to return home may well have felt reasonable in the circumstances (though I also suspect the mother jumped at the opportunity, as she never seemed keen to be there in the first place), but the way she responded to Natsuki’s attempts to spend some more time with Yuu seemed overly harsh to me (in the translation it is rendered as “Oh do shut up.”). This matches the way she scolded Natsuki last week, when they were dishing up and handing out the food. And then of course there was the off-hand mention of Natsuki’s mother and sister habitually chucking out her stuff…
I too am wondering if Kise has actual health issues. Her response to adversity seems quite extreme, though extensive bullying and harmful parenting could’ve also caused that…





. Probably unrelated (foreshadowing?), but in any case you might want to spoiler that, not everyone has chosen to look at the trigger warnings.

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