What a letdown nothingburger ending. And I loved the manga immensely since chapter one but here I must put my giggles aside a bit (because it's cute, but lackluster).
I'm not talking about some grand reveals like wedding or kids, but at least make some point. Try to end on a higher note. Here the story just... ends? Side characters are going nowhere, main couple basically ended with nothingburger, distance was never an obstacle (and this is a huge lie) and with the almost zero development like this author could've easily end the story righ after the third wheel arc or even after the sex chapter, in all honesty. Nothing changed for them at all since then.
I don't know the reasons why the ending was rushed (was it axe, or health, or other stuff), but puts you into perspective how much better even rushed closures can be (like Sono Bisque Doll by Fukuda).