One day, at the age of 15, you regains the memories of a past life. This is the world of a story read in that previous life. Their mother is already dead, and they have no family to act as their backing. Without enough power to participate in the struggle for the imperial succession, they are practically forgotten at court. However, the Third Prince had one crucial role. To die by the age of 20. Plague, civil war, assassination, execution. Merely to convey the story's setting, the Third Prince dies in every possible scenario, with only the cause changing. At this rate, they will die. Their father, the Emperor. Their two half-brothers vying for the throne. And the ambassador from a neighboring country, capable of interfering from outside the empire. Transform yourself, in their eyes, from a "minor role who can die without consequence" into an existence they cannot afford to lose. The method does not matter. Whether through intellect, beauty, or fear. To survive—prove your worth.