I mean, considering how it was already pointed out the last time that these two were at the wedding, I don't really get why so many people are surprised that we're getting an arc about them making up with Yuzu - and coming to accept her sexuality.
Oh, come on—there are so many unresolved issues concerning the main group of characters still hanging fire after dozens of chapters, but we need to go off on a tangent about the most obscure named characters in either series?
I mean, this is an author who disposed of the fully developed complex central conflicts of the original series in a handful of wordless single panels. How Yuzu got back on speaking terms with her semi-asshole middle-school friends is hardly a burning question.
Oh, you're not wrong, and Citrus + really was supposed to be about expanding on all of that. But while I would have understood the surprised comments the last time, they do seem out of place now after we already started on this road in the previous chapter.
Well, right--these guys are a bit like Closet-Case-Kendo-san & and her Nene-Knockoff partner---(for some of us against our better judgement), we do care about the core cast, but the question arises as to why exactly we're supposed to give a fuck about these newcomers? (And the middle-school duo might as well be complete newcomers, since their brief previous appearances are buried so deeply in the original series).
Ultimately both pairs of characters do relate back to Yuzu specifically, but there's already plenty of dithering and uncertainty about how the core characters feel and what they plan to do in the future without the need to import more from the far reaches of the Citrus-verse.