After saying her goodbye to Sans Frisk continued into Waterfall as she passed a large waterfall with rocks flowing down it and a nearby bridge
The last time I was here I didn't check what was that way, maybe there's something that can help me reach the barrier faster. Frisk thought as she walked down the bridge only to reach an Echo Flower.
"I swore I saw something… Behind that rushing water…" the Echo Flower repeated causing Frisk to blink in surprise.
"Something behind the Waterfall?" Frisk asked before going back and carefully avoiding the rocks only to take a deep breath and walk through the rushing water before seeing a tutu on the ground. "Oh, well I can put it in that box I saw earlier."
With that thought in mind Frisk picked up the Tutu and walked back towards the box she'd passed and placed in gently inside before continuing past the waterfall.
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Sans dodged the magically enhanced soap of the Woshua as more monsters approached to fight him.
"Sans, whatever's going on with you has to stop here. ;)" said an Aaron before it started exercising and flexing towards Sans.
"You know, I really didn't want to deal with quite so many of you at the same time." Sans admitted only for his eye-sockets to go dark as he looked down to see a spear had impaled him from behind.
"This needs to stop Sans, and I'm going to make sure it does." Undyne told him as Sans fell to his hands and knees. "Whatever it is you think you were doing, it's over now."
This… why is this happening now? Sans thought weakly. This plan was our only idea to save everyone and now… I can't keep my end of the promise.
With that thought Sans collapsed to the ground only for Chara's SOUL to appear and begin glowing only for him to suddenly gasp as he appeared behind the same Woshua that he had tried attacking seconds ago.
"I'm alive, but how?" Sans questioned only for his eyes to widen in realization. "Wait a second did this SOUL just… well if Undyne will be here soon that would mean I should be more methodical this time."
As Sans said that to himself the Woshua turned around only to notice him and step back nervously.
"Sans?" the Woshua asked nervously. "What are you doi…"
The Woshua never finished its sentence as a Gaster Blaster formed next to it vaporizing it instantly.
No idea how I managed to do that, but if it helps this crazy plan work I guess these are some resets I'll be thankful for. Sans thought before vanishing to await the Aaron and Undyne.
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Frisk closed her eyes and took a deep breath before continuing through Waterfall only to almost immediately end up walking into grass that grew well over her head only to suddenly hear two familiar voices as she quietly smiled.
"Papyrus, report." stated a commanding voice. "You mentioned a human before?"
"Yes Undyne, you see I did encounter a human but…" Papyrus started nervously.
"Then I assume you captured this human." Undyne said simply. "Where is it?"
"Actually Undyne, I wasn't able to capture the human." Papyrus admitted sadly. "I tried very hard, but I was unable to stop them."
"… I see, don't worry Papyrus I'll handle this from here." Undyne told him.
"You mean you'll capture the human Undyne? But you don't have to, you see this human is…" Papyrus started only to suddenly stop. "I understand, I'll help you however I can Undyne."
After saying that Papyrus turned and walked back into Snowdin.
Poor Papyrus, he just wants to make people happy. Maybe once Undyne and I become friends I can ask her to be a little nicer to him. Frisk thought only to take a half step forward and slightly kick a rock.
"Huh?" Undyne questioned before forming a spear as she stared at the grass where Frisk was staying as still as possible only to let out a sigh of relief when the spear vanished as Undyne seemed to disappear.
That was close, we'll be friends later but she still kind of scares me. Frisk thought as she continued walking only to hear someone behind her.
"Wow, did you see her?" Monster Kid asked excitedly. "Who do you think Undyne was talking about?"
"I don't know, but maybe we'll find out soon." Frisk answered.
"Yeah, you're probably right." Monster Kid smiled before running off only to trip and fall.
"Are you alright?" Frisk asked running over to help Monster Kid back up. "You should be a little more careful ok?"
"Alright, thanks." Monster Kid smiled before running off.
"I don't know how long it's going to take, but I promise everything will work out this time." Frisk whispered to herself. "Don't worry Sans, I promise we'll stay up there this time."
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"More dust? This is getting out of hand." Undyne frowned. "That skeleton has gone completely mad."
If only things were that simple Undyne. Sans thought from the grass he was hiding in only to hear the Aaron approaching as he silently worked his magic on it.
"I told Papyrus I would talk with him but Sans is really starting to test my patience, if he keeps this up much longer I'm going to have to stop him by any means necessary." Undyne admitted before her eye widened and she turned to see an Aaron scream seconds before its SOUL turned blue and it flew into the air only for a bone to impale it seconds later.
"I told you didn't I, if you wait at the end of Waterfall I'll tell you why I'm doing all of this." Sans told her. "I can't just stop; believe me I want to but that's just not an option. Heh, I guess this feeling explains a lot."
"Explains what?" Undyne questioned turning only for Sans to have already vanished. "This is insane, of all the monsters in the Underground why did he have to be the one to lose his mind?"
With that thought Undyne ran to try and catch up with Sans before he killed any more monsters.
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Frisk couldn't help but smile as she picked up last of the Bridge Seeds and gently floated it across the water and thought back to the last time she did these puzzles as the four of them bloomed creating a path for her only for a horse mermaid to approach her.
"Hey, what are you doing here? ;)" the horse mermaid asked.
"I'm going to see the king, who are you?" Frisk asked with a smile.
"My name's Aaron. ;)" the monster replied only to pause and look at Frisk before its eyes widened. "Wait a second, you're the last one. A human. ;)"
The moment the Aaron said that it began to flex violently while trying to strike her with its arms only for Frisk to dodge them and started flexing back.
I forgot how silly some of the monsters were, but at least it's kind of fun. Frisk thought as the Aaron watched her in surprise before grinning.
"A flexing contest, alright you're on. ;)" the Aaron grinned before flexing even more.
The two of them flexed more before the Aaron suddenly flexed so much he ended up leaving the room.
Frisk watched Aaron flex away before shaking her head. "Definitely silly, but pretty soon we'll all be free."
With that in mind Frisk cross a small bridge before noticing four more Bridge Seeds and smiling walking over to pick them up and solve the next puzzle only to pause and take out her phone.
"Hello?" Papyrus inquired curiously.
"Hi Papyrus, it's Frisk." Frisk smiled. "I just had an idea."
"An idea, what kind of idea?" Papyrus asked only to pause. "Actually, a friend of mine thought she saw you earlier. She wanted to ask if you were wearing a ribbon in your hair."
"Yeah I am, the same one I was wearing when we spent time together." Frisk answered. "Actually, I was talking with Monster Kid and thought maybe I could try and spend some time with Undyne."
"Spend time with Undyne, that's a remarkable idea human Frisk. You both will certainly get along very well…" Papyrus started only to trail off. "Though, her opinion of humans is very…"
"She wants to kill them and take their SOULs, right?" Frisk guessed. "I don't blame her; it isn't fair you're all trapped but maybe I can help."
"Human Frisk… alright I will set everything up so you can spend time with Undyne. It may take a little longer but I will set up everything." Papyrus replied.
"Thanks Papyrus." Frisk smiled before hanging up. Well, that's good but I have to make sure everything works out so we're there when he arrives, right Sans?
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There's definitely something weird going on, I died and I know for a fact I can't cause a reset like Frisk could so how did that happen? Sans thought as he looked around at the increasing number of dust piles he had created. "You went through a real nightmare Frisk, doing this because you chose to or were just curious is one thing but the reason you went through with it… each one must have felt like a stab in your heart."
As he thought that Sans noticed Chara's SOUL only to bring it closer to him.
"A SOUL as determined as hers… is that how? But then how could I remember it perfectly this time when I can only vaguely recall the others?" Sans questioned. "Or is it because of how I got to this particular timeline in the first place, I was there when the world reset."
Chara's SOUL just seemed to glow in response to Sans thoughts as he shook his head only to hear footsteps behind him causing him to shake his head before disappearing as Undyne and an incredibly nervous Papyrus walked up
"There must be a reason for this Undyne, Sans would never act like this. We both know that." Papyrus mentioned hopefully. "Perhaps something happened to him that we don't know about."
Undyne turned to Papyrus and frowned. "I want to believe you; Sans isn't the type to pull this kind of stunt for no reason but you've seen the dust yourself. He's killing them Papyrus, Sans is killing every single monster in the underground and he's taking a methodical approach to king Asgore's castle."
"I know, but what if something is controlling his actions? Or maybe he was brainwashed by someone or something. One of the past humans may have done something before they died." Papyrus suggested desperately.
"I won't rule out the possibility, but Papyrus if something did happen to Sans and he can't control his own actions anymore…" Undyne started only to look down. "We'll have to stop him ourselves." Though if what he told me is true he is in control and he at least thinks he has a valid reason for these murders.
"You don't… I mean, if something has happened to Sans and he isn't in his right mind we won't have to…" Papyrus started nervously.
"If he is that fargone Papyrus… I'll take care of it for you." Undyne answered simply. "If we're lucky he'll stop but there's just no way to know until we catch him so right now that's out top priority."
Papyrus looked down before slowing nodding. "I understand… Undyne."
(Frisk is making her way through Waterfall and is attempting to set up an opportunity to spend time with Undyne and become her friend while Sans has somehow reset and is working on continuing his genocide. Next chapter Sans and Frisk will both keep moving through Waterfall. As always any reviews or critique is appreciated.)
(Author's Note: With Frisk dead the individual with the most Determination is currently Chara but since Sans is technically the one in possession of her SOUL it's his death that allows resets.)