If you loved Yu Yu Hakusho: The Movie - The Golden Seal, try Black Butler: Book of the Atlantic
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

Yu Yu Hakusho: The Movie - The Golden Seal
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Black Butler: Book of the Atlantic
What they share
Both films are directed by Noriyuki Abe, and they both carry the foreign gem, playful mood tags, and they sit in Action / Animation / Comedy territory. If that's the register that drew you to Yu Yu Hakusho: The Movie - The Golden Seal, the second film will land in a comparable space — through a different lens.
foreign gemplayful
What Black Butler: Book of the Atlantic is
Mid-Atlantic. Steam whistle. Empty deck chairs. A clandestine society promises resurrection; Ciel investigates, alongside his butler, Sebastian. Ciel's fiancée, Elizabeth, also boards the luxury liner. A theatrical horror anime, spiked with shonen tropes.