The ending was a little dull (and you could argue unsatisfying though I dunno if I'd go that far), but the actual core of the story was already wrapped up a few chapters in advance, so I'm not sure why people are complaining it's sudden. If the manga had continued, this would've been the start of a whole new shift in the story, so I'm happy that we at least got a properly finished product in the end.
Having a girlfriend and a girl friend may not be dramatically super satisfying but it is reasonable and realistic, so.
Thanks as always, Osis : poppray: