"I'll become the most perfect alpha for you!"
Eight year old papyrus stood there a few feet behind his brother as sans stood in shock.
"W-what...?"
"I said that I'll become the perfect alpha for you sans!"
Sans seemed at a lost of words. He was joking right? They were at least five years apart. Plus, brothers weren't supposed be mates not ever. Sans shuffled on his feet bit as he tried to find a way to turn down his brother lightly.
"Pap...we can't." Papyrus then started getting upset, almost on the verge of tears. Sans winced at the tears. He went to grab papyrus' hand and lead him home but papyrus didn't want to budge and was practically being dragged home.
"Why?! Why can't I be your alpha?! Is it because I'm too young?! I'll get taller-!"
"Pap, that's not it. It's just that we can't, it's wrong. Please understand papyrus, that we can't be like that. You can find another omega I'm sure-"
"No! I don't want another omega! I want you and I won't go home til you say so!" Papyrus then had sans let go of his hand and landed on his little nonexistent rear sobbing. Luckily they were just leaving from playing in the snow in the forest, so there was no one around to see the little skeleton brother cry.
Sans didn't know what else to do.
"Paps, please listen to me, we just can't okay? I'm sorry but it's just the way it is please believe me paps if I could, I would be your omega-" papyrus was having none of it as he began to sob harder. It was obvious that papyrus didn't liked what he heard and would stop crying til he got what he wanted. His dad always told sans he shouldn't be spoiling him all the time. Sans tried again as he went to cup papyrus' skull. "Pap, please stop crying, you can find another mate and even bett-" louder crying came as he tried to explain. Sans then gave a sigh as he decided to pick him up instead. Papyrus flailed a bit, but immediately stopped as the last words were said to finally make him stop. "Okay, okay...you win. You have me out of ideas." Papyrus then started to snuggle into his brother as he was carried home. Sans then chuckled. "You have me wrapped around your little bony finger paps."
"So does that mean you'll love me and only me?" Sans then smiled warmly.
"Yes, of course."
"Then no more alphas for you!" Papyrus exclaimed as he squeezed sans harder. Sans then let out a laugh.
"Yes. No more alphas for me." They trudged through the snow to snowdin where their father waited with a scolding glare for staying out too long.
After a long lecture, sans then carried his baby bro to his room to sleep. As he tucked him in those words that papyrus said to him rang in his head again.
'No more alphas for you!'
No more alphas. Sans kissed the top of his little skull.
'Yes. No more alphas for me.'
Sans walked out of the room with thoughts filling his head.
Sans can't have any alphas.
Besides, He was a beta.