MTL - Nine Realms Sword Master - Chapter 2987 Gods?

A world where people awakened abilities called Skills to those who come of age. The protagonist, Awakened with three godly cheat skills, does he uses them and rise to an existence called a hero or becomes a person who only cares about his own life.

[True to its genre: a creepy, rule-based horror story, highly refined and quality assured, but prospective readers seeking a thrilling experience should think carefully before proceeding.]In order to secure a substantial university life experience grant, Lin Yi and his roommate registered to attend a suburban university.A seemingly ordinary but slightly unsettling set of student regulations;Strange signs in front of the buildings and seemingly normal building rules;Mysterious figures threading through the campus under abnormal weather conditions…As the experience unfolded, more and more bizarre people and events emerged. To survive and leave the campus, Lin Yi had to navigate on the edge of the rules…[Note: The logical chain of this book was deduced by the author before it was written, forming a closed loop. All rules serve as clues, and all the inconsistent, mysterious occurrences will receive scientific (or quasi-scientific) explanations. There are no supernatural events or related phenomena (just kidding), you are welcome to try reading it!]

Legend says, that there is a great demon, who is the human kind’s public enemy. He is the galaxy federations’ nightmare as he wanted to conquer the whole universe. On the first day, he completely took out the human fleet, plunging them into disorder. On the second day, he declared that he will wipe out the whole federation. On the third day, he declared——that the hero who shot him in their previous battle must marry him, or else, he will destroy everything.

The galaxy federation president and the council members had a long meeting after that. They decided to dispatch a soldier, Wu Xing Yun, and marries him off to the arrogant demon. Wu Xing Yun was once a hero who fought for the nebula, and henceforth, he was tasked—— for the sake human race and the universe’s peace, to eliminate mistresses, settle his matters with the mother-in-law, and fix the man’s crooked ways.

Wu Xing Yun was very perplexed when he asked his commanding officer: “Sir, why did it have to be this way?”

Commanding Officer: “Soldier, bear in mind, that this mission of yours, is for the sake of the universe and mankind’s happiness. You must hold on to your husband, and fight other mistresses! Do you have the confidence to accomplish this task?”

Wu Xing Yun, stood straight, saluted, and instinctively replied: “Sir, yes sir! I will accomplish this task!”

- Description from Novelupdates

For the wine to be drunk on her wedding night to actually have been a cup of poison and for the one to poison her to be her husband, who would believe it?