If you loved Trinity Seven: Heaven's Library & Crimson Lord, try Fairy Tail: Phoenix Priestess
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.
You already loved

Trinity Seven: Heaven's Library & Crimson Lord
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Fairy Tail: Phoenix Priestess
What they share
Theyboth carry the foreign gem, playful mood tags, and they sit in Action / Animation / Comedy / Fantasy territory. If that's the register that drew you to Trinity Seven: Heaven's Library & Crimson Lord, the second film will land in a comparable space — through a different lens.
foreign gemplayful
What Fairy Tail: Phoenix Priestess is
A girl with inconveniently blank memories stumbles into the guild that can't say no. She clutches two trinkets destined for apocalyptic delivery. Someone should probably ask which end they go in.