, I recommend the following novels to you. It seems to be similar to the strongest Berserker Upgrade: 1. [Hegemonic Evil Emperor System: The main character can allow those who submit to me to prosper and those who resist me to die. Killing monsters can give you experience points and leveling up can give you stronger abilities.] 2. "Unlimited Upgrade System": The protagonist transmigrated with an unlimited upgrade cheat. With a violent slash, leveling up to 999 levels per second was no longer the limit. Killing monsters dropped equipment. I hope you like this fairy's recommendation. Muah ~๐