Heavenly Prison Sign-In: A Heavenly Demon’s Sacred Body from the Start

Lin Xuan transmigrates to a fantasy world and becomes the deposed Crown Prince of the Great Xia Dynasty. But he is framed, his cultivation is crippled, and he is thrown into the Heavenly Prison. Rumor has it that countless demons are imprisoned inside, including an ancient monster. The entire prison is filled with demonic energy. Lin Xuan is on the verge of being overcome by that energy and dying inside the prison. At the critical moment, Lin Xuan activates the God-Tier Sign-In System. “Ding! Sign-in successful. Congratulations, Host, you have obtained the Heavenly Demon Sacred Body!” “Ding! Sign-in successful. Congratulations, Host, you have obtained the god-tier cultivation technique, Heavenly Demon Divine Thunder Art!” “Ding! Sign-in successful. Congratulations, Host, you have obtained the heaven-tier divine weapon, Crimson Demon Sword!” … Years later, countless Heavenly Demon troops suddenly pour out of the Heavenly Prison. Emperor Xia: “Could the ancient monster be about to emerge?” Guard: “No... that’s His Highness the Third Prince!” After Lin Xuan emerges, he discovers that he has become invincible under heaven! The demonic body awakens, and ten thousand demons emerge!