I recommend the following two novels to you: 1. "City Super Blood Devil": The main character is a great demon. After the rebirth of Earth, he kills people to level up and is invincible in the world. This novel belonged to the urban life genre. 2. [The Strongest Upgrade System: The main character is the otaku Long Fei, who transmigrated with a violent system.] He could level up by killing monsters and killing people, crushing the three worlds. This novel belonged to the category of Oriental fantasy novels. I hope you like my recommendation. Muah ~