Alright, so I just finished the last volume of 'Tonari no Stella' last night and I'm still trying to process it. Honestly? It was a bit softer than I expected given the whole 'jaded salaryman and sharp-tongued college girl' dynamic they built up. They do get together, obviously, but the big conflict in the final arc is less about some huge external drama and more about Akio, the older guy, finally overcoming his deep-seated fear of being inadequate for her youthful, forward-moving life.
It culminates in this really low-key but lovely scene where Stella, after he's been avoiding her out of some misguided noble sacrifice nonsense, just shows up at his apartment, tells him his fears are stupid, and that she chose him and that's the end of the discussion. The final chapter is a time-skip epilogue showing them a few years later, still living next to each other (of course), now both working professionals, and it's just a snapshot of their daily, comfortable life. No grand wedding scene, just making breakfast together. It's sweet, but part of me wanted a bit more fireworks.