Everyone calls that true love.

The daughter of a prestigious noble family, Rachel, was supposed to be engaged to the prince. The shadow on that promise began two years ago. In a country where the doctrine of "mutual sincerity between husband and wife" has taken root, the romance between Rachel's fiancé—who speaks of an exceptional "true love"—and his commoner lover began to be celebrated by the nation. Intoxicated by this fervor, they—those who should be more versed in the doctrine than anyone—are swept up in the dance once more. As if being manipulated by something.