If you loved Bubble, try Attack on Titan: Crimson Bow and Arrow
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 Tetsuro Araki, and they both carry the foreign gem mood tag, and they sit in Adventure / Animation / Fantasy territory. If that's the register that drew you to Bubble, the second film will land in a comparable space — through a different lens.
What Attack on Titan: Crimson Bow and Arrow is
You wake before dawn to join the cadet corps on the wall’s parapet. A six-meter Titan lopes toward the gate but stops at sunrise, leaving the city unharmed. That evening your armory burns and the wall’s second layer collapses under a second attack. Recruit training pivots into survival drills as the horizon fills with shrieking shadows.

