Haikyuu One-Shots and Head Cannons

Sakuatsu

"NO NO NO!!!" Atsumu screamed painfully. "Why?!" He was crying so unbelievably hard, why wouldn't he the love of his life just died.
"Atsumu, it's going to be okay." Osmau tried to comfort his brother.
"HOW?! HE IS DEAD! GONE! WE WERE GONNA HAVE A LIFE TOGETHER!"

Months passed and Atsumu became distant and cut off until...
"Hey Honeybee."
"Omi Omi?" Atsumu questioned the voice that called to him.
"Yes, love?" Sakusa said softly back.
"B-but I watched you flatline." Atsumu was crying.
"I did, I'm so sorry I left you but how you are acting right now isn't you. I want to watch my honeybee be the person I fell in love with. Please try to be happier."
"I-I will but don't expect me to move on."
"I don't. I will see you again one day my love. I'll wait for you."
"I can't wait Omi Omi."

Atsumu woke up with tears in his eyes. He knew things had to change now. He is now going to love his life to the fullest and be as happy as he can be for his Omi Omi.

About a year after the dream Atsumu had become as happy as he could be but he vowed never to move on from his Omi Omi. He knew he couldnt love again and not like that. In Atsumu's mind if he did that he would be cheating. But he did find a different kind of love again.
"Kiyo, come on you have to go to school." Atsumu called out to the young boy.
"Okay Dad." The little boy yelled back running towards the front door with his bag.

Atsumu had adopted the 5 year old boy a few months back, funnily enough his name was Kiyo and it reminded him of his Kiyoomi.

"Dad when I get home can you tell me more about Omi?"
"Of course Kiyo. Now have a good day."

- About 15 years later -
"I'm sorry Kiyo...I'm going to see my Omi Omi now..." Atsumu said quietly and weakly to his son.
"It's okay Dad, I'm going to be Okay. Tell him I said hi."
"I love you Kiyo."
"I love you to Dad. Goodbye."
He had died of a cancer he had been suffering with for a few years.

The machine flatlined and Atsumu woke up in a beautiful field. He realised he wasn't alone and ran towards the figure he had seen. Atsumu looked like he did the year Sakusa had died. He could choose his age in the afterlife I guess.

"Atsu!" Sakusa wrapped Atsumu in a tight hug. "I have missed you so much honeybee."
"Omi Omi! I missed you too!"
They kissed. "Tell me about your life."
"I have a son. His name is Kiyo, he is twenty now and he knows about everything about you. He wanted me to say hi to you for him. I adopted him when he was five and he considered you to be his other parent. He also called you Omi. You would have loved him and he already loved you."
"R-really?"
"Yeah, I never fell in love with someone else, I waited for you. Although I love Kiyo as our son. I think if you survived that crash we would have had a family."
"I already had a ring I was looking at, and always thought you'd be a good dad."
"I missed you so fucking much Kiyoomi."
"I missed you even more Atsumu."
"Do you think we could get married here and wait for Kiyo to come to us?"
"Yeah, yeah I think we can."
"Then let's do it."

Since this was their own personal paradise they made rings and gave them to each other, they designed them themselves.
"I love you Kiyoomi Sakusa."
"I love you more Atsumu Sakusa."
"Want to know something I didn't tell you before?"
"Yea."
"When I adopted Kiyo I gave him your last name."
Sakusa just smiled and kissed his now husband.

Many years later.
"Dad?"
"KIYO!" Atsumu ran towards the young man that had now appeared at their paradise. "My baby I missed you."
"I missed you too dad! Is that him?" Kiyo asked pointing to Sakusa.
"Yea that's him."
"Hey I'm Kiyo Sakusa nice to meet you Omi."
"I'm Kiyoomi Sakusa aka Omi it's wonderful to finally meet you."
"Aww my two favourite boys are here with me. Now tell us about your life Kiyo."

The end.

Nᴏ ᴊᴏᴋᴇ ʙᴀsᴇᴅ ᴛʜɪs ᴏғғ ᴏғ ᴀ ᴅʀᴇᴀᴍ ɪ ʜᴀᴅ ʟᴀsᴛ ɴɪɢʜᴛ sᴏʀʀʏ ɪᴛs sʜɪᴛᴛʏ!