Yes, I recommend you the Divine Weapon Forging System. The protagonist started out as a student, but later turned into the king of the underground city, becoming the world's top mercenary king. The world's number one assassin organization threatened to take his head, but it ended up disappearing like smoke. He had countless legends and endless shocking stories. He could fight against the power of a country alone, making many people tremble in fear. I hope you like my recommendation.๐