Hidden Heir

An overlooked, underestimated, or secret individual who possesses an unacknowledged but completely rightful claim to a position of supreme lineage, birthright, or institutional power.

The thrill of destiny revealed, the shock of sudden legitimacy, and the satisfaction of seeing the overlooked rise to their rightful place. It's the feeling of a secret truth coming to light, transforming the protagonist's world and their place within it.