Not necessarily. Unless the third prince thinks to himself that he needs to take his kingdom back, then sure. But if he stays on his side of the world and just becomes the king of that kingdom, they won’t need to be enemies. When ML ends up with FL, it will in fact strengthen an alliance rather than cause tension.
But still that's kinda uncomfortable, knowing the ML is the enemy of his mother's nation.
Not really, since (SPOILER)
the ml is the 3rd prince's uncle. He is the former Lionel king's bastard and cherished Idis, the only sibling who was kind to him. The 3rd prince will probably like getting an uncle
It may seem like it since ML did conquer the 3rd prince's maternal home kingdom. But they are separate situations, and it is sad 3rd prince doesnt have his maternal side support bc of ML. But ML did it to gain power and assuming did so to find FL after her mysterious disappearance/death
Ooh that's good to know
So the ml is the enemy of the third prince?