S1 Muzan x mother reader (completed)

21

Muzan stood in his room. The big bright moon in the sky, shining brightly. It's glow lightening Muzan's pale face.

His hand clenched. His knuckles turning white. He soon grits his teeth and pushes all of his equipment into the floor. His rage flying all over.

On his table laid a box. It's red ribbon contrasting the f/c box.

"I should've just let mother stay! Now... she's out there! I do not know where she is!!" Muzan thought. His feelings in full view as long as no one was in the room with him or if he's mother was with him.

"This is the second time! Why does this always happen?!" He screamed in his head.

The day that Muzan was supposed to pick Y/n was her birthday. Due to her living hundreds of years, she had slowly forgotten her birth date. But not Muzan, he'd always prepare a gift whenever her day comes. He always makes her busy until he finishes his gift.

He stared at wrapped box. The box he was meant to give her.

Worry clawed at his throat as he thought about the times you both spent together...

"Mother" A 15 year old Muzan called out to his mother. His frail and pale body made him look weak, breaking his already broken pride more.

Y/n turned to him. Dark bags hung under her eyes. She had just finished the never ending stacks of paper work. Her back ached from the long hours of seating on the stiff chair. "What is it, darling?" She asked softly. Her voice soft yet hoarse due to the lack of water.

He stared at her worriedly, though it was unnoticeable due to his already composed face.

"What is it my darling?she asks yet again, not hearing her son continue.

"You mustn't work yourself to death, mother. If you die, no one will love me anymore" he states as he slowly walked infront of her desk.

Y/n frowned at the word 'die'.
"My darling son, refrain from speaking such statements. Everybody in the estate loves you" she informed him. Her yes softening as she stared at his face.

"No one love me as much as mother and no one loves mother as much as I do"Muzan tells her blatantly. To Y/n, it looked so adorable but she knew that once he grew up, their connection will severe once he finds a girl he loves. But to Muzan, it was a serious statement.

Y/n giggles and ruffles his black hair from the other side of the table
"Yes yes, that is true" she played along

He closes his eyes at her warm touch but frowned as soon as she pulled away. The woman leaned back to her chair
" sit down, Muzan. We have something to talk about" she sighed

Muzan stared at her before sitting down
"I wonder what she wants to talk about" he thought

"My father, your grandpa had decided that it'll be a good idea for me to remarry again" she tells him, her eyes boring to the ceiling.

Muzan's eyes widened at this. He bites his inner gum. He didn't want the warmth he had to be shared.
"What?" He asked her.

"My father, your grandfather had said that you cannot live without a father as it'll affect you when you get a family by yourself"

"Me? A family by myself? without mother?" He asks yet again.

Y/n's heart flutter when he had thought about her but sighed, he was a kid after all.
"Yes, once I choose the right candidate for you, you will have to get married and live by yourselves with her family and our family's funds"

"But where will mother go?!" He exclaims, panic rushing in.

"I will stay here, with my new husband—

"No!" He demanded

Y/n paused in surprise. She knew that he was fond of her but they had just began to live together only a month after h/n's death. "What do you mean no? I need to remarry, Muzan. A family cannot be complete without a father—

"No! Mother's not remarrying anyone! Mother must always be with me!" He demands, anger running through his veins. His hands gripped her table's edge tightly.

Y/n sighs
"Go back to your room Muzan. The wedding had been already planned a week ago. I cannot change it" she tells him.

It felt like time stopped for Muzan. She was the only light in his dark cave. He cannot share it no matter what!
"If mother can't change it, then... I will"he thought.

Y/n stared at Muzan who stood up and walked out her office. She frowned, feeling guilt grow in her heart.
"Mother's very sorry, Muzan. I do not like the plans too but...if it's what's for the best then so be it" she mumbles.

—# #—

Muzan caressed the box. His hand running through it with no pauses. Running his hand through his hair, he sighed.
"Poor guy...he didn't deserve mother anyways..."

———

Only a week after the wedding. The man(Michiko) Y/n had married died due to poisoning.

The man(Michiko) (made up family name) was sent to an expedition and a Muzan had secretly added poison on his food that was made from a maid they hired from the man's family enemy(Kotorosu).

Once he died, the Michiko's gave compensation to the Kibutsuji's and the Kibutsuji's gave help on conquering the Kotorosu's. It was a win win for the two families and Muzan.

After the fight. Y/n had refused any proposals her father had given her, much to Muzan's happiness. But Y/n didn't refuse just because of the potential assassins on her estate. She refused them all because of Muzan. Unbeknownst to Muzan, Y/n had known what he did.

At first she thought he really wouldn't go through his plan, but was horrified when he actually did.

"May their families reach peace and prosperity" she prayed in her head as she sends off another refusal letter with a smiling Muzan by her side.