Life in between the AUs

Hello everyone! My name is Duskmask Girl, it's really nice to finally be here! This is my first time writing fan fiction, so I hope you like this one. Please comment and send feedback so I can make my stories better! Without further to say, let's go!

Cyndi was alone. Broken. Crying. What had she done to deserve this? Was this because she was part monster? Because she had access to ancient power and magic? Because she was different? She didn't know the awnser to any of that. After the humans had sealed the monsters under Mt. Ebott many years ago, she had lost everything. Her happiness, her smile, part of her family. Now she was cursed to live along her human sibling who hated her. Treated her as a freak. Used her as some kind of tool for entertainment.

But it wasn't always like that. Her life used to be perfect in some way. It all started some years before the War: While exploring the woods, a powerful magician who was rumored to have a rainbow SOUL, one with all the human traits combined, met a monster and fell in love with her. They got married and had a girl who also had a rainbow SOUL, and could control various methods of magic. Although not having many human friends, the girl got along with monsters including Asgore Dreemurr and his wife Toriel, who were the Royal Family. She also got along with many of the other monsters; her best friends were a little fish girl with bright red air who loved to fight named Undyne, and the Royal Scientist W.D. Gaster. She was happy. However, her happiness didn't last for long.

One day, war broke between Humans and Monsters. One day, while the battle was tense, they took prisoner her father, accusing him of being a traitor to his own kind. She and her mother hid, but they were found. Before they entered the room they were hiding in, her mother decided to do something to save her daughter. She casted spell on the girl, which would make her age more slowly, handed her a book of spells that belonged to her father, and gave her specific instructions: To stay hidden until the war ended, use her magic to protect herself if needed, and then go look for her father's brother and start living with them as a human. To never reveal her secret to anyone, and to enjoy her life, because it was going to be a long one.

The mother was captured, and sealed underground with the others. She followed the instructions she gave her, and looked for her uncle, who was not in the best mood to welcome someone who caused a loved one to die. They agreed tn take her in, and actually started acting as her second family. But then her cousin came in. He absolutely hated her, and treated her as if she were some sort of old ugly toy. But one day without warning, her uncle and aunt were attacked by a an illness which had no cure. They died some months after that. Now she was alone with her cousin. After he learned about the spell book she had and how she could use magic, her cousin made her use most of her powers to escape life problems and responsibilities.

Her life had become literal hell now. No escape. No hopes of dreams. But despite all of her pain, she stayed strong, Remembering her father's lessons when she needed, staying true to her traits. She stayed DETERMINED.

Little did she know, that freedom would come soon.

One day she was alone reading the spells her mother had left in the book when he came in with his dumb smile.

"Monster! Have you cleaned the kitchen yet?!" He screamed at her "If not, you know what the punishment is right?!"

Cyndi startled

"I-I-I haven't... Yet...I-I'm s-sorry. Please forgive me... I'll do it-"

His smile disappeared. He punched her in the face.

"Stop the polite shit, you freak! You know the rules here right?! When I give you an order, you follow it immediately, got it?! Who was it that accepted you into the family?! My parents right?! The least you can do to honor their death and all they have done for you is to do make my desires come true! You are not supposed to be looking through that garbage book, but being obedient and doing what I say! UNDERSTAND?! MONSTER?!"

She nodded rapidly, but it seemed that wasn't enough. He starting walking towards her with strong fists. Cyndi was hoping that he would forgive her and not hurt her. When he was about to hit her, something stopped his fist. She opened her eyes slowly, and saw a figure standing in front of her. She rubbed her eyes to see if this was a dream, but the figure was still there. The thing returned the punch to her cousin. The impact was so big that it knocked him out of the room. He got up fast and tried to fight back, but the door slammed close. Cyndi was shaking.

"W-who are you...?" She said with a weak voice

The figure turned around and looked at her. After some seconds, she realized the figure was a monster. A skeleton to be exact. He wore a brown scarf, and had strange clothes. In his back he had a giant paint brush with, and had a star in one eye and a little black stain in his cheek. He had smile in his face.

"I'm Ink." He said looking at her "Sorry for the strange enter, but hey, it's better than being punched by some jerk right?"

Ink helped the confused girl stand up

"Anyway, I came her to talk to you" He added "It's something related with your SOUL"

Cyndi got scared. What did another monster want with her soul?

"W-what do you mean..?"

"It's something rather difficult to explain" Ink replied "I need your help for something"

The girl just got even more tangled. He made some black matter appear on his hand and then opened some sort of portal appear. He went in and stared at her.

"Aren't you coming?" He asked

"Who? M-me?" Cyndi replied looking around "W-where?"

"Look, I can't explain right now what's happening. Let's just say that you can either come with me, or stay here and continue being a slave for this guy"

She thought for a moment what to do

"Hey, I can't keep the portal open for so long, are you in or out?"

Cyndi made up her mind. She jumped into the portal and Ink closed it, leaving the girl's room empty and silent.