If you loved Shakugan no Shana: The Movie, try Overlord: The Undead King
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
Theyboth carry the foreign gem mood tag, and they sit in Action / Animation / Fantasy territory. If that's the register that drew you to Shakugan no Shana: The Movie, the second film will land in a comparable space — through a different lens.
foreign gem
What Overlord: The Undead King is
You wake to find yourself undead in a world that won’t log out. The NPCs ache with feelings you never coded. Now a skeletal sorcerer, you rule allied creatures by sheer will. The simulation fraying, you hunt the truth behind the shutdown. The game keeps changing, monsters kneel, people scream.
Ask 
ChatGPT
Claude
Grok
Le Chat
Perplexity
for a deeper bridge
ChatGPTClaudeGrokLe ChatPerplexity