The Abyssal Queen's Eternal Cage

My name is Lu Ci, an ordinary man with little time left to live. That day, in the ruins at the edge of the demon realm, I ran into her—Su Wanqing, a succubus who had lived for five hundred years. She knelt before me wearing a slave's collar, yet deep within her eyes lay secrets as unfathomable as an abyss. I soon sensed something was wrong. This woman who called herself a "flesh slave" radiated an aura so terrifying that even low-ranking succubi dared not approach. Under my relentless questioning, she finally confessed her true identity—the seventh rank of the succubus clan, "Abyssal Dominator," the reigning Succubus Queen. A being who stood at the pinnacle of the demon realm, yet willingly became my slave. What exactly was her purpose?