If you loved The Black Devil and the White Prince, try Nisekoi: False Love
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 Comedy / Romance territory. If that's the register that drew you to The Black Devil and the White Prince, the second film will land in a comparable space — through a different lens.
foreign gem
What Nisekoi: False Love is
Apparently high school romance can be a real mob scene. Raku Ichijo's life gets complicated when he meets Chitoge Kirisaki, a new transfer student. This fake relationship somehow becomes his reality.

