It’s not that it’s a different crown prince, it’s that in the previous life, only the crown prince’s wife was killed in what he believed was a trap set by the West.
Now what if, and hear me out here, this coming arc is not, in fact, a damsel-in-distress arc, but a character development arc for Sakura. Kai stays where he is under house arrest, and nothing bad happens.
I know that's not on the TL, but I'm sorry, "LWTCBF" is not an abbreviation. that's a full 8 syllables for 6 letters, for a 7 syllable name. something like "Cherry Blossom Falls" is an easier shortening than that...