[Demon Slayer] I Married Muzan and Reached the Pinnacle of Life

Muzan, born frail and destined to die young, obtained a system.

System: I can give you a healthy body and a long life, but you have to win someone's heart.

Muzan: Sure. Who is it?

System: Your husband.

Muzan: ?

System: Given the extremely high difficulty, the system will provide unlimited retries. Please do your best.

Muzan: What?

And then he experienced what it meant to face a hellishly difficult romance quest.

The man he had to win over was not only the unquestioned patriarch of a traditional family, but also his father's superior, the Grand Minister who held the government in his grasp. Rumor had it that even the Emperor intended to offer him a princess in marriage.

Muzan: You want me to win over a close confidant of the Emperor with my frail body as it is?

System: A trial version of a healthy body has been activated. Please be aware of the bloodthirsty side effect.

Muzan didn't take it seriously. He used his handsome looks to get close to his target, and just as their relationship was heating up, he got so hungry he couldn't hold back and ate one of his own kind. He was feasting when the other man happened to catch him.

The man looked down at him, bent over, and lifted his chin with the handle of his fan, lamenting, "...What an unexpected result. You have such a beautiful face, like the moon goddess. Why do something so bloody?"

And so Muzan died, completely bewildered, and returned to the previous night. At the time, the other man had accepted his invitation to tea and was sitting across from him, smiling with elegant warmth as he poured him a cup.

Muzan refused to give up. This time, he secretly ate a few people, sure that he'd covered his tracks perfectly. The other man was just an ordinary human, after all. How could he find out? But when Muzan crept into his room that night, swallowing his embarrassment, the man buried his face in the nape of Muzan's neck and murmured after a long pause, "You smell of blood."

"It's disgusting," the man said, as if looking at a moon stained with filth.

Then Muzan started over again.

Muzan tried countless more times. At last, after overcoming every obstacle, he won his target's heart.

He: ...I can't eat people, and I spend every day drooling over the servants in the house. But as long as I have sex with him, I get enough energy to survive, so I'm not as hungry. And I can live for many years as a demon, then inherit his estate after he dies. I suppose I can live with that.

Every day, Muzan looked forward to his husband's wrinkles appearing. No one wanted their husband to grow old and die more than he did. But every day, he was disappointed. Time flowed by like water, yet his husband remained as elegant and youthful as ever, always caressing his face and whispering in his ear:

"My dear, you look beautiful today, too."

Muzan: ...What a pretentious bastard.

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Legend has it that during Japan's Heian period, there was a Grand Minister who wielded great power and enjoyed the Emperor's deep trust. His name was Sugawara Tsuruha. Historical records describe him as handsome as fine jade and graceful in bearing, and praise him as the most beautiful man of the Heian period.

Sugawara Tsuruha married only once in his life. His wife was a noblewoman from the powerful Ubuyashiki family, named Ubuyashiki Tsukihiko, later renamed Sugawara Tsukihiko. People of the time praised the couple as perfectly harmonious and a match made in heaven, a source of envy to all.

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Nearly a thousand years later, Japan entered the Edo period, and Muzan was still paying the price for his decision back then. His former target, now his husband, was a compulsive neat freak, incredibly fussy, extremely chauvinistic, and strong-willed and difficult to deal with. He was even more of a father to Muzan than Muzan's own father, managing every aspect of his life, from his clothes and food to his daily routine. The man gave him only 500 billion yen and expected him to obediently stay home as a pampered wife.

Still, that wasn't the part Muzan found hardest to bear. What he couldn't accept was that the man's nose was sharper than a dog's. He could smell human blood, which meant Muzan hadn't had a chance to eat human flesh since becoming a demon. He had it worse than even his demon subordinates!

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Please note:

1. The top is an extreme beauty addict and a psychological pervert.

2. Noncon. Muzan has the qualities of a married woman. I started this story because I wanted to make Muzan the bottom. () He's so beautiful and so wicked. He's the rare type I could write a story about him being abused by everyone without feeling guilty.

3. The top is so gay he curls up like a mosquito coil, and is only attracted to men. Muzan is always in a male body during sex, so this is true love.

This story is also known as: How the Foolish Young Master Won Over a Cruel Minister. Muzan-chan is basically a combination of a fool and a villain.

Theme: Evil people are naturally suited to be bottoms for other evil people