He had done it. He had used his ability "Overwrite" to make his own Au.
Y/n hides behind XGaster while frisk and chara held XGaster's hands. They all looked down at the city that XGaster had made.
Y/n, frisk, chara, and XGaster were all now standing in front of the city.
Y/n: You ready dad?
XGaster: Yes. This will surely give them the perfect home.
You look at XGaster worrying.
Y/n: XGaster you don't have to make a story just for them. You can have your happy ending too.
XGaster: While it is quite tempting...
XGaster summons the Overwrite button.
XGaster: I was made to give you kids the best lives.
XGaster presses the button as hundreds of souls appear in the sky.
Y/n looks at his "Father" with a worried look on his face before looking at the souls.
* Seeing life be created fills you with DETERMINATION*
Multiple monsters and humans all stare at you, XGaster, frisk, and chara. But they all look happy to see you.
Sans: You must be Y/n. Nice to meet ya.
Sans puts his hand out for you to shake.
Y/n: And you must be sans. It's nice to meet you.
Y/n reaches his hand into sans open hand and was about to shake it. Then he heard a loud fart sound.
Y/n:...
Sans: Old whoopie cushion in the hand trick.
Sans winks at y/n with a huge grin.
* Getting pranked by a skeleton fills you with embarrassment *
Y/n walks towards XGaster before he just stands behind him.
XGaster: Is something of the matter y/n?