Our Souls Combined Nightmare Sans x Reader

Prologue

A long time ago in an Au called Dreamtale, there was a tree called the Tree of Feelings that was vital for the existence of the entire multiverse. Guarded by two brother guardians, Dream and Nightmare. Through the centuries both guardians guarded their own half side of apples. Dream guarded the golden apples that held positive feelings like: happiness, hope, gratitude, entusiasm, faith and piety while Nightmare guarded the black apples that held negative feelings that were: hatred, resentment, fear, depression and wrath.

Everyone in the village adored Dream because of him being the guardian of positivity and his cheerfulness. But Nightmare...he was different. He was the serious one, and didn't like to play and run like his brother, instead he reads books. But that wouldn't change him from all the negative feelings, because he was made completely out of negative energy, with lots of lonliness, sadness and other feelings that were invading him. 

The villagers didn't like what was different about him so without him noticing they talk behind his back of the tree saying "He is so weird", His name means something bad", "He protects the bad side of the tree", He is evil for sure". But they didn't know that Nightmare heard their conversations and trembled at them being called names. 

So the villagers were able to distract Dream away from the tree leaving his brother alone so they can take an advantage of beating and throwing things at Nightmare calling him names and told him that he was weird and that nobody will ever like and love him. 

Nightmare thought that they were right and lost his hope on being loved the same way that Dream is until one day...he meet her.

He winced in pain as he was recovering from the injuries that he got on his head from the blows that were occurred by the villagers who were laughing at him. While he was distracted a figure came to the tree without him knowing and stood on his side of the tree.

The figure stopped a few inches on away from Nightmare looking at him. Nightmare looked at the figure in fear thinking that they might try to hurt him. The figure reached their hand out towards Nightmare. Nightmare shut his eyes shut readied to be hit again...but, it didn't happen.

He felt a hand on his forehead and his pain was starting to go away. He opened one of his eyes seeing that the figure was a human female using her magic to heal him. He was speechless on what he was seeing right in front of him. After a few seconds the human removed her hand off of his head and gave him a smile. "Do you feel better?" She asked. I blushed"O-oh, yeah I do feel better now, thank you, um? "Oh my name is (Y/N)... (Y/N)(L/N) It's very nice to meet you."