Three Girls and The Mansion Of Skeletons ( Reader X AU Sans and Papyrus)

Chapter 30: Sibling Rival

As you were walking in front of the others you were still thinking about that nightmare you had, actually, you haven't stopped thinking about it since. How did Ego know Red and Horror? what even was she? What-

"Y/N!!"

You gasped as you were pulled back by Buc, seconds later a car came speeding past. "Fuckin' hell Y/N! Be careful, you almost became road kill!"

Suzy shouted you were still dazed, but wait, was that.. your sister's car?

"The car didn't even try to stop at all... hmm." Stretch mumbled, sockets focused on where the car had disappeared.

No... while your sister probably hated you now for taking Tilly away from her and her stupid boyfriend, but she wouldn't hate you that much to hurt you... would she?

As you all got home you were kinda getting worried now, you haven't really spoken to your sister in almost three months, to be honest, you didn't wanna talk to her. She broke your trust and she slapped you, which hurt you more than just physically.

You went into the kitchen, seeing that Mae was home. You smiled as she looked up and smiled back. "Hey... how was the festival?"

"It was good, I got the vegetables for you." You said as you placed the bag on the kitchen table.

Mae's smile brightened. "Aww, thank you for getting them." She said happily, taking the bag of veg off the table and placing them in the cupboard for later while you nodded and smiled. "No problem Mae."

You really wanted to ask her about any monster plants that made monsters go hostile since G Pap gave her some books for her that she's been reading over the past week. "Hey Mae? I wanted to ask you something." You said as you sat down.

"Sure, what is it Y/N?"

"Well, at the festival. G found a strange looking plant? It was making him and the other skeletons with us act all hostile and snarling, growling at each other..."

Mae gave you a confused look for a second before it changed to a serious one. She then stood up and held up a finger. "Hang on, I'll be right back..."

Mae went over to the bookcase in the living room. Huh... guess she did have a book of monster stuff then?

Mae came back with an old looking book with a symbol on the front that she placed on the table in between you and her. You looked at the book closely, it kinda looked like something out of a fairytale. "Did G Pap give you this?" You asked, running your fingers over the cover.

Mae shook her head. "No, I've had this book a while, he's just been teaching me about souls and gave me a book about them."

Souls huh? I wonder what G Pap told her?

Mae flipped through the pages trying to find the flower that holds the power to make monsters go hostile. Her eyes lit up as she found it "Ah-ha found it! It's called the Periculo calor..."

Periculo calor? "That's Latin." You pointed out, raising an eyebrow in interest.

"Yes, but for what?" Mae continued to read. "This flower grows in the autumn time in damp dark patches. Periculo calor has thick thorns and six curled petals that glow the colors of the monster soul it effects. Can only affect monsters at close range but can affect others close around as well, Male monsters are more affected than females."

Yep, that was the flower G found.

"Pretty flower, but I need to find out what the English translation is of its name. I'll be in the library if you need me." Mae said as she picked up the book and went into the library, noticing that she had a concerned look on her face, something was wrong...

You, on the other hand, suddenly had your own problems to deal with.

Your sister was sending you angry texts all of a sudden, and threats along with them. You sighed in annoyance, you really didn't want anything to do with her anymore, so you blocked her number and put your phone back in your pocket.

You then went up to your room, seeing that it was starting to get dark early now. You were just putting your pj's on you then noticed movement in the garden. You moved closer to the window, peeking out through the curtains, was someone outside? Or was it Maes dog? You then heard barking.

You shook your head and laughed a little at yourself, it was just Maes dog, so you closed your curtains and went to sit on your bed.

You woke up to the sound of glass shattering. "What the..." You mumbled tiredly as you slowly got out of bed and made your way downstairs, you could hear talking coming from the kitchen.

"Get out of my head, get out of my head..."

Wait no... was that "S-sis?" You frowned, the hell was she doing here?

She stopped talking once she heard your voice, seeing that she was twitching and she had glass stuck in her... something wasn't right here, she would be in agony right now...

You took one step closer. "Sis... are... are you ok?" You didn't like this at all.

"I finally found them..."

Her voice sounded like she had two and you flinched when her head turned impossibly fast to face you. Your eyes widened, her eyes... they were glowing pink and black, and she had black veins around her eyes. "My god... what's happened to you?"

A familiar laugh escaped your sister's lips, the one from your nightmare. "You like my new puppet Y/N? I found your disgusting older sibling." You stepped back, trying to process what was going on. "Oh? Don't you remember me? Hehe.. the masked lady in your nightmare and the monster hater? I told you I would find where the skeletons are, didn't know you lived with them though." She said lowly as she stepped closer to you, your sister's body twitching, glass falling off her skin and landing on the floor and blood, so much blood, dripping from her arms and legs. "So much hate your sister had. I could sense it in her soul... so... corrupted... so powerful! I haven't felt that much hate since the first child..."

First child? What did that mean?

Your sister smiled, wide and horrifying. "So... beTRAYED!"

You gasped as she grabbed you by the throat and lifted you up, feet winging uselessly beneath you. "ACK! S-sis... please..."

Your sister brought your face closer, smile still in place. "Your pathetic sister isn't here anymore... it's just Ego now... HAHAHAA!"

You closed your eyes and whimpered; this wasn't your sister... no, she would never try and kill you, no matter what!

"I don't need anyone in my way, that means you pathetic worthless little girls!"

You grunted as you back hit the wall hard, the breath knocked from your lungs. "Ugh..." You looked up slowly, your vision blurry and swimming, all you could see in the darkness was a menacing pink glow and also a single red glow... wait, red glow? "H-Horror..." You half gasped, trying to suck in a breath.

A deep rumbling growl echoed in the kitchen and came from behind your sister, she just giggled. "Is that the beast I hear? Come to save your precious human?" Suddenly Horrors hatchet came swinging down. "Go on, do it." Your sister chuckled and your eyes widened.

"Horror! No don't! That's not my sister talking!"

"Huh?" Horror stopped what he was doing just before the hatchet touched your sister's neck.

Horrors head was then slammed onto the floor, you heard a sickening crack, which was really not good. "Hehe... my you've changed a lot Horror, taking orders from prey?"

"Grrrr... Ego.." Horror growled, claws scrabbling for his hatchet.

"The one and only!" She grinned.