Heian Era, 812.

Muzan, being 17, was old enough for marriage. Despite denying it, wanting to rather have a lonely life, it was already all arranged. And you, being the youngest of your siblings with 14, were arranged to marry him now. He was known for spending his time alone, being a cold person. Where you, you were probably the sweetest young girl, always smiling. When he first had to meet you, his fiancé, and soon to be wife, he looked at you with a cold gaze, and you looked up at him with a bright smile on your face, following him around. While he was confused and annoyed, trying to get away, you were following him, asking what him childish things. Damnit, he couldn't deny it, you were adorable and sweet. Yet, also..childish. He was more mature than some adults, already being at meetings for clans with adults, while you were outside, picking flowers.

Two complete opposites, like the moon and the sun.

Yet the more time he spent with you, the more he craved attention from his sun. His sunshine in that boring life.

As you two got married, he was looking at you, how happy you looked despite knowing you were getting married of to a guy who was a child himself, as a child yourself. You looked too happy. And that made him too damn flustered.

Since Muzan started to live with you,his life slowly changed. Now, next to his usu black, boring kimonos were your prettier ones. Next to him eating fancy food was now you, who ate sweets while smiling. Next to him in the big futon wasn't only emptiness, instead, you who always cuddled his thin yet strong arm while sleeping now. He was getting frustrated. You were so..so cute, it was making it hard for him to ignore your cuteness. Damnit, that made him extremely angry. He couldn't handle someone's looks for the very first time. And worst of all? That person was..his wife.

Someone he had to see that cuteness of forever.

Sure, that sucked. But what could he do? He'd just stay at work as much as he could. Eat the food you made and go to sleep. Though, really?

Muzan wasn't told anything about this. You were absolutely TERRIBLE at housework. The estate somehow seemed dirtier after you "cleaned" it. You once burned water. Ah.

So he had to be a househusband, eh. Well, at least Muzan could cook excellently. He could clean well and just do anything the estate needed. A malewife, better said. But it went pretty well. You didn't complain at anything, loved his food and always have him attention. You were so cute and sweet. Though, not forever.

That was all, until you hit puberty.

One day, you woke up with the entire futon covered in blood. You had gotten your period. Sure, you cried. But Muzan told you everything he knew about this topic, with the broken knowledge he had about women. At first, you were kinda the same. But after a few months of the puberty hormones, you started to change. Have more mood swings. Getting in heat. Getting more bratty. But well, he could handle that. Well, the worse times were when you were on your period, which was thankfully once a month.

But it was now. Now, it was that time of the month.

⁠☆

It had been a long day. Work, go to the market and buy pads, flowers and sweets for your cravings, come home, cook, clean and put you to bed. Muzan was so exhausted. You were already in bed. Your cramps were bad today, that's why you were way too rude and bratty. But he couldn't complain, knowing you were in pain.

Muzan took a shower, changed into his yukata and was ready to come on the futon and sleep. But you had different plans..

As he sat down on the soft futon you two shared, something just wasn't right. Damnit, you didn't want Muzan on the bed tonight.

Before he could lay down, your small hand pushed him away, hissing at him. Hissing. Like a cat. But he was used to such behavior from you by now. Muzan sighed, his gaze annoyed and a pout on his lips as he looked down at you while sitting up at the futon, poking your forehead, pouting, his voice cold.

No. Bad {{user}}. Stop it.

He was treating you like a baby, huh.