What if?

5 years later

5 years later

"Mommy!!!!"

*Gasps* "Oh my seriously, S/nnn~."

Hi my name is y/n and I'm 23 years old, well I'm turning 23 today. This is my son(s/n) he's 4 years old and he just made a big mess.

"Darling, please stop messing with the paint, I've told you so many times not to do that." Y/n said scolding the 4 year old.

"Sorry, (s/n) was bad, is mommy mad at me?" He said, making a sad face.

"Wha- oh darling I'm not it's just mommy has a lot in mind and it would be a little nicer if you were behaving a little," Y/n said put her hand on his head.

"Okay then I'll make mommy happy oh and Happy birthday Mommy!" He said hugging her.

"Haha Thank you, darling!" She said hugging back.

"Alright we have to have a lot of fun today! Mommy is not on her computer more often now, so let's go!!" y/n said cheering.

"Mommy don't be too childish." He said.

"Child, don't grow up on me.." Y/n said whining.

They were going to spend the whole weekend with each other and s/n was really happy. Y/n was often busy but she had finished her projects and was going to go to college now. Kiyoko and Tanaka agreed to look after s/n and if they weren't able to, then Yachi who looked after s/n. She was so thankful for her friends, they all were kind of busy today but they still sent gifts to y/n for her birthday. S/n wanted to go to the National to watch the Black Jackals and Schweiden adlers. He was actually a fan of Kageyama and Atsumu and he could never choose who he liked more. They went inside the national gate. Since Y/n knew kageyama she wanted to surprise s/n by bringing Kageyama to him but she wanted to do that after the games. At the games s/n was not really cheering for any teams and it was hard for y/n to look at the games because it was very intense. Atsumu looked so unapproachable, if looks could kill it was like if anybody came near him he would eat them alive. His expression had changed so much but on the other hand, She was dying about how Kageyama's hair was like now. The game ended and the Black jackals won. After a lot of people had left, y/n grabbed s/n's hand and held him.

"Okay I know mommy was busy a lot and mommy wants to make darling happy, So mommy has a surprise for darling okay?" Y/n said looking at him.

s/n nodded, he loved surprises and he was excited. She went downstairs and she covered s/n's eyes. The teams hadn't left and Kuroo was also cleaning up. Y/n wispired. From far away Atsumu's eyes widened when he saw his former lover with a child. Is she married now? Did she really forget about me? Is she with Tobio? These questions filled his mind. Kageyama nodded and y/n slowly opened his blindfold.

"SURPRISE!!" Y/n said taking off the blindfold.

S/n eyes widened and he looked at y/n.

"Mommy?" He said holding on to her dress.

"Haha, Darling didn't you say you wanted to meet Tobio?" Y/n said bending down on his level.

S/n nodded with a blush in his face, he was excited.

"Hi s/n, I'm Kageyama Tobio but you can call me Oji-san (Uncle) or anything you like.

"Um, do you know mommy?" He asked.

"Yeah, Y/n the scary big sister." Kagayama answered with a fear on his face.

"HEY!" Y/n yelled.

"Then can I call you onii-san." S/n said.

Kageyama was so happy that you could see it in his face and he nodded. Y/n was talking to Ushijima about how s/n always wanted to meet kageyama and him.

"Happy Birthday boke" Kageyama said to y/n. He was holding s/n on his arms.

"Happy birthday y/n" Ushijima said.

"Aww thank you guys!" She said.

"WAH- Y/N-CHAN!! HAPPY BIRTHDAY!" Hinata said, running towards their side.

"OI BOKE STAY ON YOUR SIDE SHE'S HERE TO SEE US!" Kageyama yelled at the wing spiker.

"Tobio don't be such a grinch" Y/n said rolling her eyes.

"HI SHOYO!!" Y/n said waving at the male. Hinata ran and hugged her,

"DID YOU SEE MY AMAZING SPIKE??" He said jumping.

"Yes it was so awesome shoyo!! You've gotten so good and taller!" Y/n said cheering the orange hair.

"y-you think I've gotten taller." Hinata said pointing at himself and y/n nodded.

"Sho-kun!" Atsumu said coming there.

"I'm sorry guys I have to go, We have plans this evening." Y/n said and signaled s/n but he held on tight to Ushijima and Kageyama.

Ushijima was holding him now and talking but s/n didn't want to let go.

"Darling we have to go, please mommy wants to take you somewhere else too and you can visit them tomorrow." She said but he hugged them even tighter.

Y/n sighed, "Okay then looks like mommy is spending her birthday alone." She said, making a sad face.

Atsumu was some feets away from her looking at the change of expressions she makes and how she looks like now. He remember that day of Graduation and the ring he had, he was going to purpose to her, right in front of everyone. That's right the team was waiting for him to take out the ring but instead they had to watch Atsumu cry.

"Fine then mommy is leaving, darling can stay with Wakatoshi-sun and Tobio." Y/n said turning around.

Then s/n came jumping and held on the y/n. "Noo mommy Can Nii-chan come with us too?" S/n said pleading y/n.

Y/n sighed, She looked at Kageyama and Ushijima. Kageyama nodded and said, "I have free time."

"I as well have free time." Ushijima said.

S/n was beaming with happiness and y/n smiled at them. Atsumu was concerned, he had so many question and one of them was, did she cheat on me? That baby looks about 3 or 4 years old.

She waited outside with s/n for kageyama and ushijima to come out. Atsumu was walking out of the gym when suddenly s/n tugged on his leg.

"Oh Hi little guy, wha're ya up to?" he said picking s/n up.

Then y/n came to where they were, "Darling please stop running around." Y/n said putting one of her hand on her head and sighing.

"Mommy look it's the cool and scary setter." s/n siad pointing at Atsumu.

"O-oh Darling be respectful.." Y/n said reaching for him but s/n held onto Atsumu.

"S/n please stop with the grabbing onto strangers." Y/n said sighing. "But he doesn't feel like a stranger." S/n said looking at y/n.

Y/n's eyes widend because she was shocked, yes it's true that s/n is Atsumu's child but how? S/n is only 4 years old and he thinks that Atsumu is not a stranger?

"Y/n let's go." Kageyama said.

Luckily in time kageyama and Ushijima had came out of the locker room. When Atsumu saw Kageyama his aura became dark. "Oh tobio-chan see ya around." He said smiling and left.