Real pacifist (undertale reader insert)

Spear of Justice

"7, 7 human souls and we will be free, 6 that's how many we have thus far and with just 1 of your souls, king ASGORE will become a god! But as it is customary for those who come this far I will tell you the tragic tale of our people, it all started long ago... wait, you know what?" Undyne took her helmet off " SCREW IT! WHY SHOULD I TELL YOU THAT STORY, WHEN YOU ARE ABOUT TO DIE!? Ready, humans? Here I come!"

Your souls flitted in front of you and Undyne struck. You automatically put your hands in front of you for protection and scrunched your eyes, but when you felt no stroke you opened your eyes and lowered your defensive stance. You saw that your soul had a green aura, and you couldn't move apart from pivoting. You realised that Undyne had used her soul magic on you and Frisk. Undyne then threw a few simple attacks at you which you pivoted to block, you ducked one which then hit Frisk.
"Ouch, that hurt Y/N! Please just block next time."
"Sorry Frisk, I'll do that on the next attack." You saw a spear coming to you from your side which you swiftly blocked.
"You're better than the other humans I have fought. It's like you know what I'm going to do! I'll just make it harder than. NGGGAAAHHH!"

A flurry of attacks came your way, which you tried to block but missed a few, which hit you, this fight was a lot harder in real life! You heard heavy breathing as Frisk clutched her chest while she decided to act.
"Undyne, we do not want to fight you, please we're trying to free monsterkind too!"
"You think I'm going to fall for such a pitiful lie? You punk! You are going to pay for that!" A spear flew at Frisk, she put her hand up to block, but her soul aura was now red again and the spear hit her, reducing her HP to zero.

"FRISK!" You ran to Frisk as her soul shattered into tiny shards before your eyes, her body started to turn to dust.
"What in the underground?! Humans don't dust, nor do their soul break when they die, now her soul is useless for Asgore!"
"No" you put your hand to your mouth "Frisk, I'm so sorry, I should have never have put the idea on your head to come down here, now your dead and it's all my fault."
"Y/N... don't worry... sacrifices are needed... for freedom. I'm determined that you... will free monsterkind... I'll always be in here." Frisk put her hand to your chest before crumbling to dust. "No, Frisk, you can't be dead, please, your my best friend, please! No!" You moved your hand through Frisks dust.
"I might be trying to destroy you, but I want a fair fight, you have an hour to mourn, punk! And don't think of going anywhere, or there will be no mercy!" Undyne shouted in your direction, however, even she seemed to be slightly moved by what Frisk had said.

You sat and cried your heart out until you could cry no more, then you just wished that Frisk was still here, that you had never come to the underground, that you were all safe. Then out of the corner of your eye you saw a golden twinkling.

Frisk soul shards flew towards it and cemented back together. Then her dust flew towards her newly formed soul, slowly remaking her body right before your tear-stained eyes.
"Frisk!" You ran towards her slowly forming body "You're alive? But how? Is this determination?" Frisks body had almost fully formed and she nodded with tears in her own eyes and smile on her face.
"I'm here, Y/N, and always will be." You pulled Frisk into a bear hug.
"What, you can come back to life!? You really are a punk! I can still kill the other one though, NGGGAAHHHHH" your soul had a green aura again and you had to be very nimble to dodge all the spears, luckily Frisk had your back and you only got hit once.

You had low HP so you had one of the cinnamon buns. Frisk then noticed the green aura around your souls had gone and pulled your arm.
"Run!"
"HEY, GET BACK HERE YOU PUNKS!!!" You were half way across a bridge when your phone started ringing, you stopped to take the call.
"Y/N keep running!"
"But in the game you get a call and..."
"This isn't a game! This is real life!" You realised your mistake and continued to run, also talking on the phone, to Papyrus.
"HUMANS, I WAS WONDERING IF YOU WANTED TO COME TO UNDYNE'S HOUSE LATER?"
"Thanks for the invite Paps but we're kinda running away from her right now!"
"OH, MEET ME AFTER YOU GET PAST HER THEN! SEE YOU SOON!" You hung up and realised you were half way past the 'welcome to Hotland' sign,
when Undyne caught up with you, you tried to keep running but she turned your soul green before you could go much further.
"Gah!" You fell over because of your momentum from running but got back up again and prepared to continue fighting.
"STOP RUNNING AND FACE ME LIKE MEN, ahh WOMEN, children?" Spears came from both sides, luckily Frisk was able to block on the right and you took left, also going front as Frisk went back. With the system you had going it was a lot easier to block the spears, and they were definitely getting faster. Finally your souls aura returned to normal and you and Frisk ran into Hotland, going past Sans, who was sleeping at his post, much to Undynes' frustration, and the two of you went over the bridge and had to stop to catch your breaths. You saw Undyne was coming over the bridge, albeit slowly and attempted to run again but were desperate for a rest. Just as Undyne had almost passed over the bridge, she collapsed out of exhaustion. Frisk ran to the water cooler to get a cup of water, she then ran over to Undyne to rehydrate her. Undyne still seemed dehydrated so Frisk and you both got some more water and offered it to her. Undyne shook a bit and then got up, slowly, she looked at you with a different expression to what she had worn before and then walked away, but you heard her mumble;
"They really do remind of someone else I met, though who I don't remember, it was ten years ago after all." Frisk saved and you decided to meet Papyrus at Undynes' house to try to form a relationship with Undyne, then you remembered something.