Well but, Tsubaki isn't at fault, the ones who compare them were other people.
I'm talking from experience here, I'm the elder sibling and my younger brother always gets compared to me, he obviously doesn't like that, but he's got confidence enough to tell me to my face that he hates it, and I'm honestly against he being compared to me, I mean we're two different people. We have our complicated relationship, but we love each other because no one else understands us better.
The thing with Tsubaki and Hiiragi is that they don't have that bond/confidence to talk things trough, resulting in Hiiragi hating Tsubaki for smth she didn't even do
Anyways, thanks for the chapter, as you said mycropen this us one of the bests for now