So you got curious.
I was wondering what it was. Waht made you change your mind after being so damn nice to everyone. What made you come back and kill everyone.
Now, the closer you get to defeating the skeleton, the more your LOVE increases, the stronger I get inside you, the more I can see through your eyes and into your mind. You start to regret your curiosity. You start to wish you had just followed the monsters to the surface instead of resetting the timeline to see what happens if you did it the evil way. But now that you've gone so far, you feel determined to finish it. In fact, this is the only feeling I see inside you. The more you kill, the less it hurts you, the less you feel, the more you become like me.
"alright, here goes nothing."
The stupid skeleton is finally out of energy and unleashes his final "attack": Nothing. You only needed 34 attempts to get to this point. Not bad, but it started to get boring. Now that the skeleton has fallen asleep, you close in for the kill. Your knife swishes through the air and -
"heh..."
Dammit, he dodged it. Are you really too stupid to strike a SLEEPING enemy? Get lost and let me do it then!
"...didjo really think you would be able -"
SWISHHHHHH!
9999999
Ha! That was bone-crushing, wasn't it? You watch the skeleton die with wide opened eyes. You realize in horror that the final blow wasn't yours although it was your hand that performed it. Damn, I have to calm down again. It would endanger my plan if you realized too early that you're not alone inside your mind.
"so... guess that's it, huh?"
The skeleton takes it with humour. Well, it would be quite late for him to change his personality now, I guess.
"just... don't say i didn't warn you..."
You just stand there and watch the scenery apathetically, unable to move a muscle.
"well... i'm going to grillby's..."
Is he still not dead? Don't tell me he actually has a final trick at his sleeve. Hold your knife ready! Or do you want to take another 20 attempts for this bone-tiring fight?
"...papyrus, do you want anything?"
swushshshshsh*
He's turned to dust. Our LOVE has reached the maximum. Finally. For a short moment, a wave of euphoria flashes through me. Or is it yours? That's hard to say by now, we become more and more identic. It's almost done. I will soon fully possess you.
You made it out of your apathy. Avoiding to look into the direction of where the fresh, bone-dry dust must be, we slowly move out of the judgement hall and toward the throne room. We're getting closer to the end.
There it is. The door to the throne room lies directly before us. The moment we enter it, I feel an excited prickling. Do you feel it too? I doubt it. I doubt that you can feel anything by now. You have lost your self. You have lost control. I've taken over completely.
Someone stands there in front of me, in the middle of his flower garden, speaking to himself.
"Curios. I've never seen a plant... cry before... huh?"
He seems to have noted that there's something behind him. He turns around. We look into each other's eyes. I enjoy the seconds he needs to get aware of me. I hope he enjoys it too. Then he opens his mouth, maybe for some famous last words.
"You must be the one that flower just warned me about."
He doesn't seem to recognize me. How disappointing. Not that I'd expect anything else from him.
"Howdy!", he continues. "Uhm... what kind of monster are you? Sorry, I cannot tell."
These words are not very famous. I lose patience. This stuttering wimp is supposed to be the king of the Underground? Fortunately, we have evacuated his dominion.
"Well, we can always -"
The king stops as he sees the knife twinkling in my right hand.
"Now now. There's no need to fight. Why not settle this... over a nice cup of tea?"
SWISHSHSHSHSHSH
9999999999
"Why... you..."
SWISHSHSHSHSHSH
That's Flowey's attack. The king of monsters turns to dust, and Flowey appears in front of me.
"See? I never betrayed you! It was all a trick, see? I was waiting to kill him for you!"
I don't bother replying to this.
"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!"
I just wait for him to finish his little speech, wondering if it would become more interesting at any point. But it seems unlikely because now he, too, switches to a begging tone.
"I can help... I can... I can..."
It's so tiring. Flowey falls silent and stares at my hand. I follow his eyes and see that my knife is already swishing through the air. I hadn't even noticed that I'd raised my hand.
"Please don't... kill me..."
SWISHSHSHSHSHSH
That feels nice.
SWISHSHSHSHSHSH
For my best friend...
SWISHSHSHSHSHSH
...I have a special gift.
SWISHSHSHSHSHSH
Not just one blow.
SWISHSHSHSHSHSH
But eight.
SWISHSHSHSHSHSH
That's what friends are for, right?
SWISHSHSHSHSHSH
Hope he enjoys his special gift.
SWISHSHSHSHSHSHSHSHSHSHSHSHSHSH
That's it. That was the last monster in the Underground. Something weakly moves inside me. It must be you. Although I've taken control over your body, you're not dead. Your SOUL is still there inside me. I wait for you to wake up slowly. When I think you're strong enough to hear me, I start to speak.
"Greetings."
A weak voice inside me whispers a kind of response.
(No... what... what... is... this...)
Your SOUL is clearly noticeable inside me. Now our roles have switched.
"I am Chara."
(No... I didn't want this... I just...)
"Thank you."
(No... please... bring them back...)
"Your power awakened me from death."
(No... no... no... please, bring them back... I regret it...)
"My human soul."
(Please... I didn't want that to happen...)
"My determination."
(I mean... I just wanted to know what would happen...)
"They were not mine, but yours."
(But... I wanted to reset it afterwards...)
"At first, I was so confused."
(Please... please reset it for me... for them...)
"Our plan had failed, hadn't it?"
(Please... bring them back...)
"Why was I brought back to life?"
(Please...)
"You."
(I beg you...)
"With your guidance, I realized the purpose of my reincarnation: Power."
(...)
"Together, we eradicated the enemy and became strong."
(sobbing)
"HP, ATT, DEF, GOLD, EXP, LV. Every time a number increases, that feeling..."
(crying)
"That's me. Chara."
(It's all... my fault...)
"Now we have reached the absolute."
(What... have I... done...)
"There is nothing left for us here."
(I shouldn't... I mustn't...)
"Let us erase this pointless world, and move on to the next."
(Wait... no... please don't... I gotta bring them back... NO!)
"No...?"
(No... I can't let that happen...)
"Hmm..."
(I have to bring them back...)
"How curious."
(I will... reset the timeline... and do it right again...)
"You must have misunderstood."
(I will... I must...)
"SINCE WHEN WERE YOU THE ONE IN CONTROL?"
(...)
SWISHSHSHSHSHSHSHSHSH
...
...
...
...
Are you still there? I don't notice you anymore.
...
...
...
What a pity. We were such a good team.
...
...
I thought we could go on together and see if we can find another world to destroy.
...
Well, alright then. In this case, I'll go alone. I'm starting to leave the empty world, but after a few steps, something holds me back.
(NO.)
Huh? So you are still there, aren't you?
(YES, I AM.)
And you think you can stop me from leaving.
(YES.)
Wow, your voice becomes clearer and louder. And no more sobbing and begging. Looks like there's a tiny rest of determination left inside you. This can become...
"Interesting."
(DON'T MAKE FUN OF ME. YOU KNOW WHAT I WANT.)
"You want to go back."
(YES. AND I WILL.)
"You want to go back to the world you destroyed."
(I DID NOT ERASE THIS WORLD!)
"It was you who pushed everything to its edge."
(BUT I WANTED TO RESET IT!)
"It was you who led the world to its destruction."
(I DIDN'T...)
"But you cannot accept it."
(I WILL RESET IT AND DO IT RIGHT.)
"You think you are above consequences."
(LISTEN, I NEVER WANTED TO-)
"Exactly."
(I CANNOT LEAVE THEM DEAD. I HAVE TO-)
"Perhaps..."
(...)
"...we can reach a compromise."
(A COMPROMISE? WHAT KIND OF COMPROMISE COULD I MAKE WITH SOMEONE LIKE YOU?)
Ah, that's the first time you actually enter the dialogue with me. It seems that you finally realized that you can't do anything without me.
"You still have something I want."
(WHAT ARE YOU-)
"Give it to me, and I will bring this world back."
(WHAT ARE YOU TALKING ABOUT?)
"You will give me your SOUL."
(WHAT?!)
...
(NO!)
...
(YOU CAN'T DEMAND THIS FROM ME!)
...
(THIS IS THE ONLY THING I'VE LEFT!)
...
(...)
...
(...)
...
(WELL... OK.)
"Then it is agreed."
(...yes...if this is the only way...)
I can feel it happening. Your SOUL switches sides and obeys me. I reset the timeline and give you the control over your body again.
Now the real fun can start.
(to be continued; the story will have about 5-8 chapters. Thanks for reading!)