I thought it was a great show, that is until I got to the ending. I suddenly became confused, and I felt like I got and ending that I really didn't want. I was watching episode 12, and I was hoping that 13 would be amazing. I then saw the previews. The last episode was recap? Well, this site lists the show as 12 episode, so it must be an OVA I guess.
This series loves recap. The last episode is recap, and the whole last arc is like an alternate retelling. The movie is also an alternate retelling of the series. I noticed that the special is an elaboration of the Summer arc.