How to Survive as a Doomed Prince

He awakens in the body of a prince fated to die in a fantasy world. With no choice but to survive, he searches for a way back to Earth—only to discover that every time he dies, the world loops back. If his death is inevitable, then why does it feel as though the world itself refuses to let him go? Worse still, the villains who were meant to oppose the protagonist... are now hunting him.