If you loved Saint Seiya Heaven Chapter: Overture, try Saint Seiya: Legend of Crimson Youth
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.

Saint Seiya Heaven Chapter: Overture

Saint Seiya: Legend of Crimson Youth
What they share
Both films are directed by Shigeyasu Yamauchi, and they both carry the epic, foreign gem mood tags, and they sit in Animation / Fantasy territory. If that's the register that drew you to Saint Seiya Heaven Chapter: Overture, the second film will land in a comparable space — through a different lens.
What Saint Seiya: Legend of Crimson Youth is
You train under a dying master when a god resurrects thirsting for annihilation. Your four comrades stand ready at your side yet Athena walks away. This is the war that tests whether saints born from earth can outlast divine wrath. Yamauchi’s 80s anime frames martial ardor against celestial indifference leaving only clenched fists in the void.