God of War's Son-In-Law: My Twin Fiancée

(No cuckold + cool writing with outstanding writing style + top-notch stand-in slap in the face + multiple female protagonists + decisive killing + twin Shura field + son-in-law with the most powerful background) "I have been the husband of Ouyang Xiaofei, the president of Lingyun Group, for ten years and three years. I was forced to marry into a wife but never even held Ouyang Xiaofei's hand. In the end, I was killed by Ouyang Xiaofei's suitor. Brother, you are really useless!" The Rakshasa-level God of Death, Luo Ziling, held the relics left by the licking dog that looked exactly like him, and stepped into the Ouyang family's villa with a sneer. The lives of the twin sisters have completely changed... Ouyang Xiaofei, who had been licked by her original owner for ten years, realized that something was wrong and kicked out the door to catch the adulterer. She saw that her fiancé, who he had always thought was cowardly and incompetent, was holding the business giant's neck with one hand and stepping on the underworld tycoon's back. Her twin sister was dressing his wounds with red eyes. Soon, the entire wealthy circle was trembling: How did the son-in-law who had been ridiculed for ten years become the King of Eternal Night who made the world's big bosses kneel down?