Yuki

then leave tf the majority of the story revolves around the effects of his passing

I'm leaving when I'll lose interest, not the case at the moment but the point I mentionned could make me leave when I'll decide. I can make decisions for myself so I don't need your advice (or order idk).
Oh and I get the story you know, but it doesn't mean I like how the author is doing it in every chapter and in every page... I thought that was obvious, my bad
Also for you it's about his passing for me this a story about getting over his passing, I get we have to know the past to grasp the present but to me the past (Yuki) often overtakes the present, I feel he's more present than Uenoyama which I don't like (excuse me once again for not liking something)
But then the need to get over his passing is an effect his passing, oh ... it's just we have different take on this story... doesn't seems normal to you, but sorry that's called subjectivity.