If you loved Puella Magi Madoka Magica the Movie Part II: Eternal, try Puella Magi Madoka Magica the Movie Part I: Beginnings
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.
You already loved

Puella Magi Madoka Magica the Movie Part II: Eternal
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Puella Magi Madoka Magica the Movie Part I: Beginnings
What they share
Both films are directed by Akiyuki Shinbo, Yukihiro Miyamoto, and they both carry the dread, foreign gem mood tags, and they sit in Animation / Fantasy / Thriller territory. If that's the register that drew you to Puella Magi Madoka Magica the Movie Part II: Eternal, the second film will land in a comparable space — through a different lens.
dreadforeign gem
What Puella Magi Madoka Magica the Movie Part I: Beginnings is
The last cicadas of summer, a vending-machine hum in a dead mall. Kyubey slides a contract across the counter; Sayaka’s fingers smudge the ink before Madoka signs. A fever-dream of bullet-time runs backwards.