A/N: So… Undertale fanfic! Really good game. This is an OC story, that sort of replaces the main character, Frisk. Frisk is in it though… obviously (look at this chap). Everyone else will also be in it. Nyeh heh heh! Sorry, I had to do that.

This chapter is the prologue, the end of the genocide route. It's also the only chapter in third person P.O.V. And the only one that focuses mainly on Frisk. This chapter is actually part of the story the main character wrote, but it was written by Frisk themself. The main character wrote the rest themself. It'll make more sense at the end.

Cover's by me, but silverinkstripe on DeviantArt drew an awesome cover. Go check it out! As well as that, I'm also doing art for this story. My DeviantArt is iHateFridays. Lots of stuff there.

~PROLOGUE~

Frisk gripped the dust-coated knife in their clenched fingers. The knife that had slaughtered their friends. Their face was empty and pale. It looked like it hadn't emoted for many years. They stood before the entrance to the throne room. It was surrounded by grey walls and grey leaves. A SAVE point was to the right. Frisk saved, filling themself with determination. Determination. The thing that had pushed them this far.

The child walked into the throne room. The floor was covered in a lush garden and random spots of sunlight. Golden flowers were gathered in the middle, surrounded by green leaves. A throne was placed in the center of the room. The King of Monsters was standing before it, back turned. He towered above the small child, but they showed no fear. Fear had long since vanished with their other emotions. They approached him slowly.

"Curious," Asgore observed, watching his garden. "I've never seen a plant… cry before." He seemed to sense Frisk's presence. He turned around and faced them. "...huh?" he asked, not recognizing their humanity. But who would? That seemed just as dead as their friends. "You must be the one that flower just warned me about." He smiled courteously. "Howdy!" He frowned. "Erm… what kind of monster are you…? Sorry, I cannot tell. Well, we can always-"

Frisk ignored his courteous invite and initiated a fight. The old king looked surprised.

"Now, now," he said calmly. "There's no need to fight. Why not settle this… over a nice cup of tea?" Frisk swung their knife. Not this. Not when they were so close. Their single blow almost killed the king. "Why… you…" Little white bullets that were so familiar to Frisk surrounded the king. They closed in and turned him to dust. Only his white, upside-down SOUL was left behind. The bullets closed in… and destroyed the SOUL.

"See?" Flowey- the living golden flower- asked, popping up. He seemed nervous. "I never betrayed you! It was all a trick, see? I was waiting to kill him for you!" His expression changed to his real form's- Asriel's. His dialogue built up speed. "After all it's me your best friend! I'm helpful, I can be useful to you. I promise I won't get in your way!" His voice was shaky. "I can help… I can… I can…" Tears formed in his eyes. "Please don't kill me."

Mercy was nothing to Frisk anymore. Neither was their compassion. They were dead inside. They had nothing left. Nothing but determination. So they did it. They killed Flowey. Mercilessly. They swung until he was nothing. They didn't feel shock, pride, sadness, or happiness. They felt nothing at all. Even a human who killed for malice would feel some sort of emotion. Frisk had gone beyond 'human'. They didn't feel emotion anymore.

A human child with a green-and-yellow-striped sweater appeared in front of them. They had short brown hair and pink cheeks. Their skin was pale.

"Greetings," they greeted Frisk. "I am Chara." There was a brief pause. "Thank you. Your power awakened me from death. My 'human soul'. My 'determination'. They were not mine, but YOURS. At first, I was so confused. Our plan had failed, hadn't it? Why was I brought back to life?" Another pause. "You. With your guidance. I realized the purpose of my incarnation. Power. Together, we eradicated the enemy and became strong. HP. ATK. DEF. GOLD. EXP. LV. Every time a number increases, that feeling… that's me. 'Chara'.

"Now," Chara said, staring intensely at Frisk. "Now, we have reached the absolute. There is nothing left for us here. Let us erase this pointless world, and move on to the next." Frisk, for the first time, felt a slight bit of emotion. Excitement. It seemed they had got the ending they were searching for. They were tired of this world. It would be… exciting to see it gone. They agreed to erase the world.

"Right," Chara approved. "You are a great partner." Their eyes turned into blackness. "We'll be together forever, won't we?" A slash cascaded down the world. And then everything was gone.

Darkness surrounded Frisk. Nothing was there. Nothing. The world was gone. They had destroyed the world. They'd got what they wanted. Their perfect ending. But… something inside them wasn't satisfied. That feeling. That feeling that led them to keep holding on. Keep killing their friends. Reset so many times. It still wasn't satisfied, even after erasing the world.

Chara noticed this feeling. "Interesting," they observed. "You want to go back. You want to go back to the world you destroyed." They paused. "Or is that the reason at all? It seems you are not satisfied with this 'ending'. I've seen what you're doing. You're trying to achieve something 'better'." They paused. "Perhaps. Perhaps… there is a way to get your 'perfect' ending. Perhaps there's something more you can do."

"What's that?" Frisk asked. The little emotion they had allowed them to be intrigued.

"Your best friend," Chara answered. "Your best human friend. They have a strange power. A power no other human has. If you give them your soul… they can help you get your desired ending. You will become powerful. Strong. You will become the god of this world. You will be able to create your perfect ending." Chara paused. They observed Frisk. "It seems you are intrigued. Wonderful. But… there are a few prices you must pay. If this plan is to succeed… you will have to kill your best friend. But… you've killed your others. That won't be hard for you, will it?

"You will have to sacrifice everything for this plan," Chara continued. "If you lose… your SOUL will be trapped down here forever. And if you win…? You may not be satisfied. And you cannot go back if so." They paused. "If you agree to this plan, I will bring back this world. I'll let you return to the Surface to see your best friend… and give your SOUL to them. I'll also explain more about their 'power'. So…" They stared at Frisk. "Will you partake in this plan? If you do, there is no going back."

"Yes." Frisk answered, feeling determination rush through them.

"Then it is done." Chara confirmed.