Son-in-law Is A King

He was the good-for-nothing second young master who had been ostracized by his clan. Now that he was kicked out of his clan to become the son-in-law of a small clan, the humiliation of his identity had been piled on top of his own. He was reborn in hatred, becoming the King of Assassins, the master of the underworld. These were just his titles. In a unknown organization, he was the King.