He Comes from Ghost Sea City

At the summit of the Demon Realm stands Mount Talusili, said to be the greatest peak in all three realms. Here lies a vast palace complex known as the Heavenly Demon Hall, home to the powerful demon nobles who hold the power of life and death over the realm. In the depths of the Demon Realm lies the Yixiabalu Trench, thirty thousand meters beneath the sea. Here stands the realm's largest prison, Ghost City, where tens of thousands of serious offenders are held. Without exception, these prisoners were wrongly imprisoned for one reason or another. Ghost City treats its male and female prisoners like livestock, abusing and beating them at will and ruthlessly taking their lives. The prisoners suffer beyond words, unable to fight back, for their guards are formidable warriors of the Demon Realm. The guards' mounts, one bloodthirsty demon beast after another, are even more terrifying, leaving the prisoners paralyzed with fear. Then one day, during an off-site labor detail, a reborn man from the human world falls into the hands of a stunningly beautiful sea demon and seizes her immense power. Everything is about to change. He leads the prisoners in overthrowing the warden's absolute rule and breaking out of the Yixiabalu Trench, finally breathing the fresh air above the sea...

As civilization advances through the human, demon, and divine realms, standing out in even one realm is no easy feat. To dominate all three is almost unthinkable, but he did it...