Countless genocides routes... they were just too fun, you have done dozens of those by now, to the point... it was repetitive, you already knew exactly every dialogue... every character... every monster... you had even already made a trade with Chara to trade your soul to have the Undertale world all for yourself, you kept killing them, again, and again, and again, not really hoping anything would change but... it just felt so liberating to act this way, but this time something changed...

After another completely decorated Sans fight you won barely taking any hits, killing the King Asgore, and then Flowey afterwards, they appeared, once again

"You're back once again partner..."

Chara said while standing on the darkness

"Don't you have any other plans except keep doing this over and over? you really are wracked with a perverted sentimentally."

Chara tilts their head a bit

"... Anyways, if you do or not... it's not important, remember how now I have your soul? well... it's time for certain certain positions to be renewed, if you get what I mean, partner..."

Chara's usual smile grows bigger

"You want to keep the Undertale world for yourself? I can do that, for a trade."

Chara's eyes and mouth start to melt

"You either agree to being my fart cushion or your little underground playground will be taken off from you, and don't try to come up with another solution out of this, I already have your soul, nothing else matters to me..."

Chara opens their left hand, which had your red determination soul floating above their hand, showing they still have it under their possession

"So... how will it be, partner?"