If you loved Magical Girl Lyrical Nanoha: The Movie 2nd A's, try KanColle Movie
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Keizo Kusakawa, and they sit in Action / Animation / Science Fiction territory. If that's the register that drew you to Magical Girl Lyrical Nanoha: The Movie 2nd A's, the second film will land in a comparable space — through a different lens.
What KanColle Movie is
You wake aboard the Mikawa Fleet during a moonlit naval skirmish, searchlights slicing the dark, when Kisaragi surfaces from the wreckage—alive but blank-faced. A girl without a fleet to call her own stumbles into your command. The Pacific keeps what it claims.

