Regardless of whether this would be the last chapter or not, this comic could've easily cut 50 chapters or so without losing anything in terms of plot and character development.
In particular, and this is apparently an unpopular opinion, the character of Rin has been useless throughout the whole story: Ayumu never faltered in front of her, she didn't speed up the run to the confession and Ayumu's feelings were already confirmed so she didn't even support him in this regard. If all chapters focusing on her were to be removed the story would be the same and it would've ended two years ago.
With that said, thank you team for sticking around until now. Even though I'm disappointed I don't regret following this comic till the end.