In the Great Sheng Dynasty, prosperity blooms like brocade. After the new emperor, Xiao Yin, ascends the throne, he makes an unprecedented move and appoints the talented Shen Qingni as the first female Seal-Bearer in the realm. She wields the Heart Seal, bestowing blessings upon the people, relieving their suffering, and keeping their hearts steady.
On the surface, this is a supreme act of benevolence that benefits all under heaven. Behind it lies a chilling truth: these so-called blessings use secret spirit-pattern arts to extract the people's joy, anger, sorrow, and delight, refining them into the “heart-energy fuel” that powers the empire. Beneath the song and dance of a prosperous age, humanity is being stripped of its emotions and sliding toward a silent wasteland.
Shen Qingni was once the system's most devoted believer. Then, on the frontier, she witnessed vibrant souls untouched by the Heart Seal's conditioning. In a dark alley, she read the blood-soaked denunciation left by the rebels known as the “Traceless.” And deep inside the palace, she glimpsed the inhuman emptiness beneath the emperor's perfect mask. She began to question the “golden cage” she had helped forge with her own hands.
As her investigation deepens, a truth that makes her shudder comes to light: the ruler on the dragon throne has long since been stripped of all emotion, becoming the puppet most deeply controlled by the Heart Seal. And the foundation sustaining this vast empire is none other than the souls of its people, imprisoned throughout the realm.
Her faith lies in ruins, and the undercurrents are rising. Shen Qingni stands at a crossroads: will she continue as the keeper of the key, maintaining this intricate prison, or become its most dangerous breaker, joining forces with the hidden Traceless to shake an eternal imperial rule that burns human hearts for fuel?
This is a life-and-death struggle over emotion and power, freedom and order. When the maker of the cage resolves to destroy it, the curtain over this age of prosperity begins to tear apart.
