If you loved Mobile Suit Gundam: The Origin VI – Rise of the Red Comet, try Mobile Suit Gundam II: Soldiers of Sorrow
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.

Mobile Suit Gundam: The Origin VI – Rise of the Red Comet

Mobile Suit Gundam II: Soldiers of Sorrow
What they share
Both films are directed by Yoshikazu Yasuhiko, and they both carry the foreign gem, raw mood tags, and they sit in Action / Animation / Science Fiction territory. If that's the register that drew you to Mobile Suit Gundam: The Origin VI – Rise of the Red Comet, the second film will land in a comparable space — through a different lens.
What Mobile Suit Gundam II: Soldiers of Sorrow is
You fight for the Earth Federation, piloting a mobile suit against the Zeon threat. But your vessel, the White Base, is hounded across continents and seas. Tomino's middle act runs leaner, meaner; it suggests a war where growing up fast is the only survival.