The idea was originally found in A_Bored_Reader Undertale ideas for stories that hit me like the brick called Reborn! I asked permission to use it. Read the original if you're interested, but it contains quite a few spoilers for this story.
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[For Halloween, here are two examples of Dream's bad dreams.
I warn you, there will be a few stronger scenes.
I think it is likely, that I will later use these dreams in one of the later chapters and if that is the case, I will take this extra off, what are your opinions about this?]
It was another wonderful day; Dream was playing with his friends in the village. He received a lot of sweets as a gift, even on the way to the tree, he could eat them happily.
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His brother was waiting for him by the tree, Dream waved at him cheerfully.
– Nightmare! Nightmare! – cheerfully. But the mood dropped and the world almost shattered for Dream. Nightmare was holding the negative apple in his hand and held it up ready to bite.
– Don't! Please, don't do it! – Dream with an almost pleading voice, dropping the sweets, already struggling with tears, ran towards him while reaching for him. But all his effort was in vain, it was like the distance was insurmountable, he couldn't get closer to his brother. The darkness painted the landscape around his brother, like a threatening waterfall. The colors turned purple, as the darkness touched Nightmare's bones.
– Don't bite into it – Dream screamed from the top of his throat and even the non-existent organ was filled with pain, because of the heartbreaking scene. The darkness flowed like little rivers over his brother's skull, hands and even from his eyes.
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And Nightmare didn't let go of Dream's despairing gaze for a moment, as he bite into the apple.
– No! – he cried in vain, and his tears became unstoppable. Cracking bones echoed throughout the landscape, as the darkness made its way. While his brother was still struggling with the darkness, that was breaking out, the tentacles coming to life began a bloody rampage. And Dream couldn't do a thing, just watch the darkness tear his friends apart before his eyes.
The screams and pleas of the young white bunny Mirin filled the world, as the tentacles pulled at its limbs in slow painful way. The screams became louder and more desperate, as the tendons began to tear. One snapped after the another, until the flesh was torn and one of the legs was separated from its torso in a bloody mess. But the pain was nowhere near over, when another tentacle wrapped around the bunny monster right hand, and began to break its bones into tiny shards.
