If you loved Fullmetal Alchemist, try The Relative Worlds
A bridge between a film you've already seen and one most people haven't. The Relative Worlds has roughly 8.9× fewer votes than Fullmetal Alchemist — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.
What they share
Theyboth carry the bittersweet mood tag, and they sit in Action / Fantasy / Science Fiction territory. If that's the register that drew you to Fullmetal Alchemist, the second film will land in a comparable space — through a different lens.
What The Relative Worlds is
High school mopes get an inter-dimensional upgrade when a parallel Shin drops into their lives just as they’re about to graduate. Kotori must now babysit two identical boys while Shin recovers from jet lag from a reality hop. The universe waves goodbye by dumping emotional baggage on everyone.

