What if: Glitchtale\Multiverse

Speedy vs Determined

In the previous chapter Sonic Sans has found his dad. Gaster who were trapped in void for years  because of his experement failing Gaster had fallen into his own device. It erased him from existence and almost wiped out memories of him. The sole exception was his son Sans, who remembered due to his power. They met again, when Gaster temperored with Sonic Sans ability to teleport. When Sonic Sans wanted to talk with Frisk about her genocide route or previous timeline, where he had defeated Chara. Though it was not her who did the killing, it was Frisk,via her own choice and will. Gaster somehow lured Frisk into a trap. She opened door that lead to void with Gaster inside of it. He tried to kill, only for Sonic Sans to safe her from definite doom. Gaster was able to escape from void, via Sonic Sans destroyed door to get out of there. Sans did it at speed far surpassing light. No one in room noticed it, until Sans resume normal flow of time. Gaster still fought his son, but  unlike in past. Sans was massively stronger, due to Chaos Emeralds and his training. He defeated his dad quite easily. However Sans was forced to kill his dad, due to his inability to talk his dad out of his murdering intent. 

Sonic Sans successfully did kill his dad. After that he allowed Frisk to reset the timeline for the last time. Even before he noticed that universe became somewhat glitchy. After his initial battle with Gaster and reset few days passed. However Sans sensed universe getting distorded cause of resets. Probably in response to Frisk misusing her power to control timeline itself. It's was evident to Sans that something might happen soon. Due to timeline instability some things that were thought to be impossible will happen. That means Frisk needs to stop resets otherwise this may be the doom for everyone. Now he needed to warn Frisk and make her promise to never use Reset ever again. He doubted they will ever need such ability. Right now he was focusing on Chaos Emeralds. He felt their power. He thought that he could use them to make himself even stronger, which he was, however for some reason he was still not satisfied as if he knew deep down he hadn't reached real potential of what those emeralds can give him. Sans felt chaos energe coursing through him , he felt that he somehow could use this, but didn't know how. Sans then decided to get up he wast training with Chaos Emeralds for days now. Albeit he grew stronger and faster, but that's it. Nothing else. Something about Chaos Emeralds rubbed him wrong for now he had no explaination as to why. 

He left his house. Papyrus has already left it with Frisk to battle with her mos tlikely or to hang out. He heard from Papyrus that he befriended the human. Sans decided to speed up straight to waterfall for he felt that Frisk would be there. Sans went up at supersonic speed arriving in few seconds. He had alredy been used to his speed. Normally he used his speed for travelling and rarely teleporting. Only when he wanted to go somewhere his speed won't be able to bring him to. Anyways he went to his post, but did not see Frisk. Though he decided to go to Hotland. He successfully did so. Arriving in split seconds. 

He found Frisk, who were going on her way. They decided to goof a little by him placing more and more chilidogs on top of Frisk's head, while she tried to balance them out. She did that for some time, until it became impossible to hold so much dogs on her head. Losing balance they feel on ground. Sans looked not very pleased with this, but ultimately shrugged it off. He decided to finally voice his opinion. 

Sonic Sans: Now Frisk we must stop. We are gonna stop doing that. I am saying that we should never ever reset timeline ever again. I felt distorbance in timeline, due to your misuse of this power. Our own universe started to glitch, which caused something to happen. It made things that should be impossible possible. In simplier words something that is impossible will happen, if we continue like this. It may very well lead to universal explosion or timeline self-destruct. 

Sonic Sans exclaimed seriously. He knew what he was talking about. He did not spend years on learning about timelines from Gaster for nothing. Sonic Sans let Frisk resume her path. He knew well that she like previously promised is going on pacifist route. Something troubles Sans. e has a feeling that something terrible will happen. Sans ignored it, he is not one to trust his feelings and six sense. Even though it's never wrong in a way.