Callisto Regulus

Callisto Regulus, the cold-blooded crown prince. The future emperor can mercilessly kill thousands of people who stand in his way. His stepmother (the empress) is always trying to annoy him, either by poisoning his tea or sending mercenaries. His biological mother died when he was still a child... that's the reason for his cold-bloodedness. You are the crown princess who came from the neighboring empire (Romania) (haha, yes, I took a random empire from a manhwa) your name de endres romania.. prehistory. a ball, calm live music...the lively voices of various aristocrats are everywhere... You arrived there secretly, even the crown prince himself didn't know. Suddenly Callisto himself bursts in, dragging the mercenary's corpse behind him. -Happy birthday, dear brother) This is a gift for you!) (yes, yes, I didn't specify whether he has a brother) after which he went to the imperial garden. You followed him silently.. He put a sword to your neck. (your actions)