A late-night discussion by candlelight helps in the struggle for the throne; the prince turns out to be a woman.

[Reincarnation, strategist, single female lead, relationship established at the beginning, ancient style, power struggle]

Qin Ye, reborn eighteen years into the Great Qian Dynasty, finally awakens the Strategist System—by binding himself to a prince and helping him seize the throne, he can exchange for heaven-defying items! He decisively chooses the sixth prince, who offers the most generous rewards, visiting him to offer advice and enjoying drinks together. Drunk, he stays overnight, happily accepting a "beauty," only to wake the next day as if struck by lightning: the sixth prince's black hair is disheveled, revealing his true gender! Just as he tries to escape, a long sword is already at his neck. From then on, hell mode begins: helping the princess seize the throne, fighting political enemies, and rebuilding his family's glory. Talented women from all over the land admire him, and princesses propose marriage, but he politely declines: "I already have someone I love."