This was nice so far, I am curious to see how it continues.
Something that often strikes me as odd is the way these "sisters who grew up apart, so they're not really entirely like sisters" stories are set up. This isn't the first time the plot casually mentions that the parents split up and "went halfsies" on the kids (though I can't recall another story with this exact thing atm I have the feeling I read that before). And then they more or less cut contact, even between the kids (it said they saw each other once or twice a year, which strikes me as ver rare contact for siblings). Obviously I know that things like this happen IRL, but in these stories it's always presented as something normal, something that's totally okay. Which is very weird and sad.
I mean in my generation the kids usually stayed with the same parent (most often the mom) for most of the time, visiting the other parent maybe twice a month.
Nowadays at least the goal is split custody (which is hard to do, but I know people who at least try), so the kids would have equal contact to both parents (and obviously each other). Parents who basically decide for their kids to cut out family of their lives are looked down upon (I can't help myself to think so: If you can't stay with your partner and need to split up that's fine, but that doesn't give you the right to basically separate your kids from them and other family, too).
This somehow always feels like a cop-out of issues that would be worthwhile exploring in a story, what a shame... Is this maybe a Japanese culture thing? That a divorce basically enforces the entire family to more or less pick sides and split "with" the couple?
Oh well, it seems like nice yuri by Konno Kita, so why am I complaining?