A/N: I don't own Undertale, Toby Fox does.
Power.
That's what Frisk was after. And now, They can have as much of it as they want. They discovered how to backup a save file. So whenever they would kill Sans they would save, back up the save and reset. That way, the world wouldn't be destroyed by Chara. Then, when they reach the first save point in the ruins, the restore their back up. Instant 20 L.O.V.E. Rinse and repeat. Fueled by DETERMINATION they ran 20 genocide runs. And when all was said and done, Frisk's L.O.V.E was at 400. In those 20 runs, something always changed. Papyrus would fight them in one. One time, Frisk didn't even fight Papyrus in snowdin. They fought Sans and Papyrus at the same time in the judgement hall. In another timeline Undyne and Sans fought them in the judgment hall at the same time. One time they got to kill Gasters followers. The point is, no matter how small, no two run throughs were the same. With this power, the human could do whatever they wanted. Sans, however couldn't stand it. He and Flowey were the only ones who knew what was going on. The only ones who could stop it. But Flowey disappeared. Sans couldn't blame him. He probably went into hiding. Sans tried everything he could to stop the human. Fight with Papyrus. Fight with Undyne. One time he and Asgore absorbed three souls and tried to kill the human. But somehow the Human convinced them to fight for his cause, and the souls revolted. It seemed that the Human was unstoppable. No one could stop him. The only question on Sans's mind was how long this was gonna go on for. He knew he had to use the device. But no matter what he could never fix it. Until one timeline...
Sans woke up. Another timeline, another massacre. Sans looked at the Clock hanging on the hallway when he walked out of his room.
'Wait. I don't have a clock.' Sans thought. After thinking about it for a bit Sans brushed it off. New Timeline, New changes. 10:00 as always. The human would use to come to snowdin at 11:30. But now it only takes 30 minutes. Only 30 minutes to fix the machine. Sans, who gave up working on the machine countless timelines ago, decided that since there was nothing going to do, he would at least try with the sub-par tools he had available. Sans walked out of his and Papyrus's house and went behind it. He unlocked the door to his workshop and there it was. The machine he spent so long to fix. Sans went to his drawers to reminisce. He took out photo album and the poorly drawn picture he drew. He remembered them. The blue swordsmen, the Purple monster who had a axe on her shoulder, and the green wizard with the pink scarf that was surprisingly fluffy. After Sans had enough of remembering times from long ago, he put the album and the picture in the drawer. He grabbed the blueprints off the counter and studied them, before noticing something shiny sticking out of the third drawer. When Sans opened it he was met with brand new tools and parts. This was it. This is what he needed. Sans worked on the machine, until Papyrus came.
"Sans!" Papyrus yelled.
"What's up Bro?" Sans replied.
"Aren't you going to help me catch the human?"
Sans froze and looked at the handheld clock he put on the counter. 10:20. It was early.
"Sans?"
"Oh sorry bro," Sans said.
"Just bone tired."
Papyrus did not find the pun amusing.
"Well are you going to help me catch it or not?" Papyrus asked.
"Sorry Bro. I gotta work on this."
"I see. Well if you ever need me you know where to find the great Papyrus. Nyeh-heh-heh!"
And out went papyrus with a extra 'heh!' But before Sans could return to his work. Papyrus came back.
"Sans could you come out here for a minute?!" Papyrus asked. Sans got up from the stool he was sitting on and walked toward the entrance. What he saw would horrify him.
The human was hovering. It hovered into the snowdin shop and hovered out. As it got closer sans could see what it was wearing. It was wearing Toriel's dress, Papyrus's scarf and gloves, Monster Kids bow, Mettaton's shoulder plates, It was holding a teacup in one hand and a dead flower in the other. On its back were Undyne's spear and Asgore's Trident. But the thing that rocked Sans to the core is that it was wearing his slippers, smile, and his... his eye. Sans's eye. The eye of power, made for him by a good Doctor and a close friend.
"Papyrus, come inside with me." Said Sans.
He needed to fix the machine right now.
To be Continued...
Authors note: Hey Everyone! Well what do you guys think? After choosing which AU to write about, (Underfell came *this* close) I decided to write about the triple threat AU! I decided to write a undertale fanfic after i got inspired by Starimations "Close to you" animation. (Check that out it's really good!) And Deltarune Chapter 1. And now after 1 month of writing and polish, here we are.
Constructive Criticism and anything else are welcome in the reviews. See you Guys next Chapter!