Okay. I know these two split up and everything, but in this story they're just living together.

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So here's how they arranged the schedule for the baby: Asgore and Toriel gets the baby on Monday, Sans and Papyrus gets her on Tuesday, Undyne and Alphys gets her on Wednesday, Mettaton gets her on Thursday, and Frisk gets her on Friday.

It's been a month and everyone's already attached to the small bundle. Toriel was in the kitchen making pie, while baby (Y/N) was in the high chair playing with a small wooden spoon and bowl full of cheerios. She picked a few out, and ate them with her sharp teeth.

"Hm?" Toriel turns too see her eating the cereal. "Hungry, aren't we? Well don't worry the pie is almost ready. I know babies don't usually don't eat pie, but your able to grow teeth, so it wouldn't hurt to give you a small piece."

The pie finishes but Toriel sets it in the fridge. "While we wait for the pie to cool, would you like to hear some stories?"

Minutes passed and Toriel read her 4 stories, she was on her 5th story.

"Hickory, dickory, dock,
The mouse ran up the clock;
The clock struck one,
And down he run,
Hickory, dickory, dock."

(Y/N) giggled.

"That is a funny story, isn't it?" Toriel asked. "Hmm...I think the pie is ready."

She picks (Y/n) up and carries her to the kitchen. She sits her down in your high chair and takes out the Pie. She then cuts a slice out for her.

"Well you do have retractable teeth, so it shouldn't be hard for you to eat." Toriel said as she set the plate in front of her. She went to get a plastic fork from the kitchen drawer, only to come back to see that the pie was gone and half of it was on the baby.

"My, you were a hungry one, but now you need to be washed." She picked you up and carried you to the bathroom. As she finished washing you she put you in a very soft towel.

"Now how about we read some more stories?"

The baby squeals happily.

------Time skip ------

(Y/N) was going on a trip to the flower garden with Asgore. When they make it, they see other humans and monsters.

"My, they have a lot people here today." He said, holding the small one in his arms. She looked at variety of flowers. Asgore bent down to look at yellow flowers. "Look at these buttercup flowers, aren't they just lovely?" She noticed them and tried to put them in her mouth.

"No, no (Y/N)" Asgore quickly backed away from the flowers. "Those are not for eating, you'll get sick if you try to eat those. Trust me..."