From Idler to Tech Tycoon: Earth - Chapter 156: Recruits

Witnessing her ex-boyfriend and best friend getting together, Isabella Weaver impulsively decided to have a flash marriage!After the wedding, Isabella led a more thrilling life.The neighbor's dog bit her, and the next day the neighbor disappeared and the dog was missing.Her boss harassed her, and the next day the company was emptied and the boss vanished.The principal wanted to expel her, and the next day the school was closed and the principal disappeared.Her biological father hit her, and the next day the house was gone with her father and stepmother both missing!Isabella was a bit panicked. Just who was this husband she randomly picked up on the street?“Sir, could you please introduce yourself? I can't handle too much shock!”The man calmly replied, “My identity, your husband, the rest, unimportant.”(The most pampering and sweetest on the entire internet! There's none like it! After reading this book, you won't need to eat sweets because—you'll be sweetened to death.)

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

A Hentai World is a Dangerous Place, Especially if Your Best Friend is a Hentai Protagonist and You Are a Trap.