After the Ancient Demon Lord Awoke, the Three Realms Shut Themselves Away

[Strong Female Lead + Ensemble Cast + Female-Centered Story + Strong Woman, Weaker Man + Decisive and Ruthless] Ren Shuanghan is the most powerful Demon Lord in the Three Realms. While others aim to save all living beings, her goal is to rule the Three Realms. After awakening from a thirty-thousand-year imprisonment, Ren Shuanghan's first order of business is to reclaim her throne as Demon Lord. Her second is to take revenge on Huai Jing. But she never expected Huai Jing to be dead. Thirty thousand years ago, Huai Jing, the Immortal Realm's God of War, used his divine soul and the Kunlun Divine Jade to forge a Spirit-Locking Pestle. He sealed away most of his spiritual power and placed himself in a long slumber underground. Now that Huai Jing is dead, who will break the seal on her? Wait, there's hope after all! She's found Huai Jing's reincarnation! … A few content warnings for readers. The heroine is a demon, and she will remain one, in life and after death. Though people misunderstand her as cold and cruel, she does kill more readily than most, even if she doesn't kill indiscriminately. But the best part of this book is that the heroine is the strongest in the Three Realms. If she doesn't like someone, she'll take them on until she does. Usually, though, villains with any sense won't provoke her, unless they don't know who she is. The male lead has yet to be decided. I'll write him according to the character's inner nature.