There were many novels that involved the protagonist crossing into the abyss and becoming a demon. Some of the novels might turn the protagonist into an Abyssal Demon Bug and slowly evolve. Here are some examples of novels: " Demon's Eye ": This is a movie where the protagonist is an ordinary human, but at a certain point in time, he transmigrated to a different world and became a demon hunter. In this world, demons existed, and the protagonist gradually became an Abyssal Magic Bug. In the process of continuous evolution, he gradually mastered more demonic abilities. " The Lord of the Abyss ": This was a movie where the protagonist was an ordinary human, but at a certain point in time, he transmigrated to a different world and became the Lord of the Abyss. In this world, the struggle between humans and demons was inevitable, and the protagonist gradually mastered more demonic abilities in the process of continuous evolution, becoming a powerful existence. 3 " Demon's Law ": This is a movie where the protagonist is an ordinary human, but at a certain point in time, he transmigrated to a different world and became a demon. In this world, demons were the supreme existence, and the protagonist gradually mastered more demonic abilities in the process of continuous evolution, becoming a powerful demon. These novels were all about the protagonist who transmigrated to the Abyss and became a demon. The protagonist became an Abyssal Magic Bug and slowly evolved.