Kibutsuji Muzan x Daughter Reader

Ending Chapter

"Happy 10th Birthday, (Y/n)" everyone from the infinity castle greeted.

It's been four years since (Y/n) lived in the infinity castle with Muzan and the upper moons. The upper moons didn't like her at first, but now, they were celebrating her birthday together and adored her so much.

"Make a wish," Akaza said. (Y/n) closing her eyes, thinking about her wish.

"I wish that I could be with dad and the upper moons forever. I hope that they will always love me because I love them too" she prayed and blew the candles.

Douma couldn't help to tear up "That is so sweet, little one," he said while covering his face with a fan.

Muzan sat beside her and hugged her "Of course we can be together forever. I will always protect you and love you" (Y/n) hugged back and smiled at him. "Me too, dad"

"This is my best birthday ever! I hope we can be always like this forever"

Later on, they proceed to the celebration by spoiling her expensive presents.

They celebrated until she got exhausted, leaning on Akaza's lap. "Why Daki and uncle Gyutarou didn't come on my birthday?" she mumbled and made everyone surprised by that statement. "I haven't seen them and I miss them"

The truth is, the siblings got killed before the day of her birthday. Muzan chose not to tell her because he doesn't want to ruin her excitement.

Muzan shifted her head to his lap "Sweetheart, something came up to her village. But, she handed me this present for you" He gave her a cat hairpin. "Pretty. I hope she will do my hair again" then she drifted to sleep.

Muzan carried her, walking to her room. He laid her down on the bed and wrapping a blanket on her. "Happy Birthday, sweetheart" he whispered.

"I will always protect you even it will cost my life. I don't know why am I like this to you. But I'm glad that I am your father and you are the only one who makes me happy.  I cannot believe that we get along so much to the point that you exposed my soft side to you" he didn't realize that his tears were streaming down on his cheeks.

Eventually, he realized it so he wiped them instantly. 'What am I crying for?'

He kissed her forehead and left her room.

* * *

(Y/n) woke up in a cloudy place. It was just all blue and cloudy. Then, she heard a male voice calling her. "(Y/n)!" she walked around trying to find that voice.  That voice was familiar to her.

"(Y/n) dear!" A female voice called. She turned around and she tears up from what she saw. She ran to them and hugged them.

"Mama, Papa. I miss you so much" she cried. "Happy Birthday" they knelt to hug her back. Her mother pulled away to wipe her tears. "Mama, Papa! Someone's taking good care of me"

"He is Muzan, right?" her dad asked. "How did you know?"

"Because we've been watching you" her dad smiled.

"Are you not angry? That I'm with a Demon?" (Y/n) asked.

"We are not. As long as he taking care of you, we will not be angry" her mom smiled.