Time to get some warnings out of the way. This prologue contains mentions of gore, vomiting, and death. If you're still interested in reading but you want the non gorey version PM me and I'll give you a brief synopsis. This fanfiction is and AU and is based on my personal headcannons, so if you don't like them, don't read it. Toby Fox owns Undertale and the cover photo. Thanks for tuning in and I hope you enjoy the prologue.

Frisk's world drew into focus painfully slow, restoring from whatever black abyss of unconsciousness they had previously been knocked out in. When their eyesight fully returned to them, they attempted to push themselves up from their huddled position on the floor. A wave of nausea rippled through them and they were forced to halt their actions until the spell passed. Frisk's head pounded with the mighty beat of a determined heart pumping life through their veins; to say the least they had a torrential migraine.

They sat up fully and allowed their muddled mind began to first thing that hit them was the rust and rot as strong and as pungent as if there was a corpse in the room. What Frisk could only assume to be blood in the dim lighting was soaked into the carpet and splattered across the walls. Another rush of nausea crashed down upon Frisk, and unlike last time, they broke under the weight and doubled over, spilling the contents of whatever they had just recently ate onto the floor.

After they were finished, they righted themselves. The afterthought of bile still coated their lips, so Frisk brought a sweatered arm to their mouth to wipe it away. Frisk stopped dead in their tracks. Covering their sweater and hands was blood. Blood. They felt it underneath their fingernails and coating their body like paint. Still warm, the blood covered the entire front of the child. "I think I'm going to be sick again," Frisk thought in alarm, holding back another bout of vomiting.

Taking deep breaths, Frisk calmed themselves down. Surveying the room, the eerie silence began to sink in. There was no sound coming from anywhere, not even Toriel's room down the hall where she was surely sounds asleep. "Something is very, very wrong. I have to find Mom," Frisk thought. They stood up on shaky legs and began to hobble towards Toriel's bedroom, leaning on the walls when they were available.

"M-M-Mom?" Frisk called out unsure. "Are you there?" There was no response. They began to walk faster. The hallway was typically covered with photos of fond memories and family, but now they were disfigured. Every face of Frisk's friends was crossed through with a big red "X". And Frisk, their eyes widened, each picture of Frisk had a creepily vacant smile plastered to his face. Frisk began running.

"Mom! Mom! Where are you?" Frisk cried out in desperation, racing down the seemingly endless hall. They had never remembered it being this long. Something gleamed in the dim light on the floor in the corner of Frisk's eye. They came to a screeching halt, nearly tripping over themselves at the sudden change in movement. Spinning around, their eyes found the object that caught their attention. A knife. Covered in blood and shining threateningly on the ground. Horror filled their chest, they spun back around and began to sprint once more.

And finally, mercifully, Toriel's door was there , slightly ajar, to their right. Frisk threw it open. There on the floor lay Toriel, unmoving and cold, in a dark puddle. "M-M-Mom?" Frisk choked out. They collapsed to their knees. Frisk crawled across the floor to Toriel. When they got close enough, it became apparent that the pool of liquid surrounding their mother was blood. It framed her head like a grotesque halo. Tears began to well in their eyes. Frisk began to shake. "M-M-Mom? Please, please tell me you're not…" Frisk broke into a fit of sobbing; they buried themselves in Toriel's chest which was covered with knife wounds. They cried and cried, and did not cease until the laughter of a child, perky but menacing, interrupted them.

"Oh Frisk," The voice beckoned. Frisk looked up. There was no one in the room but themself and the mangled corpse of the monster who had cared deeply for them. "Don't be such a cry baby! It's not like this should come as any surprise to you."

"Who are you?" They called, sniffling.

"Why don't you come find out?" The voice asked as it seemed to flow from behind Frisk and fade down the hall. "I'll be waiting by the mirror in the dining room…"

Frisk didn't want to leave Toriel's side. They were scared and alone and just wanted to see their mother alive and well again, but Frisk, unwillingly, stood up on shaky legs and began to make their way to the door. "I don't want to go! I want to stay! Why am I moving?" Frisk's body, however, trudged on. They made their way down the deformed hall, which seemed much shorter in retrospect from before, and to the dining room, which was adjacent to the living room.

A large mirror framed in gold hung on the wall, Frisk stopped in front of it, but their eyes did not meet its reflective surface. Unease churned in Frisk's stomach; they wanted to be back with Toriel, something ominous and menacing lurked here. "Look at what a good kid you are! You listened carefully and followed my directions," The voice from earlier began again. "Now why don't you just take a look at the pretty reflection of yours. I think you'll find a brand new, better you!"

As if Frisk were a puppet, they once again felt some invisible force tugging their body without their consent. Frisk's eyes locked in the mirror. There, in their reflection, stood a child much like Frisk, but with a dark, twisted smile and crazed eyes. A scream fought it's way out of Frisk but died before it reached their lips. They stood rigid, unmoving, and even though every instinct of Frisk pleaded to run far, far away from this beast, they found that they remained frozen, feet rooted to the carpet.

"Oh don't look so scared, Frisk," The child cooed. "There's nothing to be afraid of! It's just little ol' me." The reflection then began to move independently. It drew closer to the glass, and placed a hand softly on the only thing separating Frisk from whatever horrible fate this creature intended to inflict on Frisk. As if the surface where made of water, the child began to push through it. First their hand broke the surface and grasped the golden frame of the mirror, then the other followed suit. The child then pulled his head and torso through the glass until they were just inches from Frisk's face. Frisk felt their heart pound painfully against their ribs. "Aww Frisk, don't be so dramatic!" The child leaned in closer until his lips, curled into a menacing smile, were at Frisk's ear. The thing whispered, "I am a part of you after all."

Frisk suddenly felt the rigidness leave his body and gravity pulled him hard to the ground. He stumbled away from the hellish child who was crawling out of the mirror. "W-who are you?" Frisk choked out, alone and afraid.

The child laughed in response, now fully out of the mirror. "Oh you silly Frisk! Why ask such a question when we both know you know the answer."

As if the answer had always been there, as if it's name was their own, Frisk remembered. "Chara," They whispered, just barely audible.

The child giggled. "That's right! You're so smart Frisk. Now why don't you come here so we can finish what we started." Chara took a step towards Frisk.

"You mean Toriel?"

"Ding! Ding! Ding! Right again Frisk. We did it together! Now be a good kid and stay still."

"No! Stay away," Frisk screamed, scrambling away. Chara scowled as they continued to approach the helpless child.

"Frisk, you're really starting to tick me off. Stay still so I can-" Chara abruptly stopped in the middle of their sentence. "Great. It's you."

A familiar presence had entered the room. It was warm and inviting and reminded Frisk of moments spent in endless laughter and joy, but their was something darker teetering at the edges of the soul that Frisk knew so well. It sent shivers up their spine which made their voice shake as they turned and called out for the one person they thought could protect them.

"S-s-sans?"

Hello again! My name is Roxy and this is my first fanfiction on my new shared account with my bestie Jane. If you're into Homestuck go check out their stuff on this account and if you're interested in reading some REALLY old stuff of mine I have two other older accounts Kanari Glemmens and Nana Bananas if you want to read really terrible fanfiction. That's all for me. Stay tuned for the new chapter!

Love,

Roxy