I couldn't agree more with you, Uemarasan.
It may looks rushed but as I said before, you'll never know how love really works. Long relationship doesn't mean real love, most of the times. Nagase and Ayu turns into a brothers alike relationship after so many years. And she focused on her work, until she met Mannie. Maybe he's the perfect match for Ayu
we don't know if they will live together until death or not. I hope they live together with a life full of happiness and love though, but yeah I'm a really romantic girl
so you know I love daydreaming.
However, I'm really really happy for Ayu ^^ and I think she would be really happy as well, if we (japanese and not) fans would support her now.