Trinity Seven is a short, 12-episode anime that had a well-ended story. Honestly, I think that it would've been for the best to leave the ending of the episodes to leave it as it was, but the short movie was an exception. It focused more on the relationship of Ayata-whatever and that one red-haired girl (curse my vague memory), and added extra fan service with the other cute girls being involved with this story extension. Honestly, if you enjoyed Trinity Seven a lot, I would recommend watching this. If you didn't like Trinity Seven, well, you can watch this, but you'll be disappointed with it'srushed timing and scrambled plot. That's, also, of course, if you're an anime extremist who takes every aspect of the anime into consideration other than your enjoyment.
This, in my opinion, was an awesome after story—or addition—to the original season. It allowed us to see the final development between all of the characters combined, and to see how dynamic they all had become. I thank the publishers of this movie for giving me the chance to view it. 10/10