If you loved Heart and Yummie, 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.
What they share
Both films are directed by Masaya Fujimori, and they both carry the foreign gem, outsider mood tags, and they sit in Adventure / Animation territory. If that's the register that drew you to Heart and Yummie, the second film will land in a comparable space — through a different lens.
foreign gemoutsider
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.

