A hero's soul (bnha and undertale crossover, reader insert)

Picnic

'Normal' ~ thoughts
"Italics" ~ speech
*all* ~ A/n
*I DO NOT own any of the characters apart from OCs or any of the pictures I upload unless I say otherwise. I know when you read fanfics you hear this a lot and it might get boring but you guys understand why this is done.
Anyway enjoy this story. I also want to state that I'm sorry if there are 4th wall breaks in this but sans did cause a few in the actual game.*

•____________________•

(Y/n) POV~

"SANS!!!"
I woke up from papyrus shouting at sans. He probably told another pun, or he still didn't pick up his sock. I want to go back to sleep, I was having an amazing dream about humans with superpowers and a school for heros and...' *sigh* , I have to get ready for a picnic Frisk had prepared. Apparently, they had a surprise. I lazily shuffle downstairs to eat breakfast (which was probably spaghetti like always)!

"AH (y/n) YOU'RE AWAKE, DID YOU HAVE A NIGHTMARE?" Papyrus asked
"I don't think that (y/n) got a nightmare. If that was the case, I bet they would be awake earlier! " Sans commented.
"No nightmare but a strange dream, I was too intrigued to wake up" I gave them a closed eyed smile then sat down so I can eat papyrus' now edible spaghetti which Frisk, Toriel and I taught him to make.

____Time skip____

Sans POV

(Y/n) has been really happy when we left the house. Maybe the nightmares of the genocide runs aren't appearing anymore, or maybe it's because dad is back.

____Flashback____

"Umm... Frisk, what do you mean we can bring Gaster back? I thought there was no way to get to the void!"

*well there's this door I've seen in a few timelines. Once I opened it out of curiosity and I saw Gaster, but he was looking away. Maybe if we can get one of us through, we can pull him back* Frisk signed

"Alright, let's do this!" (Y/n) exclaimed with a hint of caution in their voice, 'they still didn't trust Frisk I don't blame them considering what happened but (if I had guts I would call this a gut feeling) I feel as if Frisk wasn't themselves.'

____End Of Flashback____

After we got dad back, Frisk has been hanging out a lot with him. I wonder why?

(Y/n) POV~

I put my (f/c) hoodie over my black and white striped shirt making sure my golden locket showed, I slipped on my black fingerless gloves before tying the laces of your (s/f/c) shoes. walking out the door, you are stopped only to be greeted by a golden flower with a face.
"Azzy!? I umm...mean Flowey "

"Geez, even after all the resets you still call me Azzy! Anyways I heard Frisk set up a little surprise. Can I tag along with you? I won't bother anyone I just want to see, this timeline is different you know, very different! " Az-Flowey asked. He seems to not be telling the whole truth!
"Sure, why not maybe we can ketchup on things while we can."

"Not you too. I'm going to kill that smiley trash bag!" Flowey groaned at the pun.

We started walking to the meet up spot, where the others will be waiting before we head together with undyne, apparently the way to the picnic has been blocked of due to some maintenance and most of us don't know Waterfall very well, luckily we have undyne to show us a different way to the spot. The walk with Flowey is quite but it's a comfortable one. I think he doesn't want to say anything, I don't blame him. After everything that has happened, talking about past timelines isn't a good idea. I still haven't gotten over seeing my brothers die. I wish I was stronger, but it doesn't matter anymore they are safe now and that is all that matters.

____Time-skip____

Frisk Pov~

Since Gaster has come back we have been trying to make an artificial soul for chara and possibly Flowey if it all goes well. Making an artificial soul is dangerous and it requires rare items to make. Gaster informed me that when he was in the void he could see many alternate universes and timelines, when he saw an AU making some he studied how they accomplished it so he can make one for Chara and Flowey.

____Time-Skip____

I am currently setting up the picnic and the surprise for the others before they arrive.

I'm nervous but excited; will this work? If so, how will everyone react? But what if it doesn't?! Ughh I have so many questions in my head right now.
After adjusting the finishing pieces and admiring my work, I hear someone call out to me.

"Hey, Frisk!"

I turn around to be greeted by everyone, including Flowey.

???PoV~

Frisk said I had to wait until she gave the signal for me to surprise everyone. It's so boring to wait around.

___Time-skip___

Alright, it's show time, but how will mum and dad react? What if they are mad about what I did? What if... No, I can't think like this they will be happy to see me again it's been so long.

(Y/n) Pov~

Everyone has been enjoying the picnic and having fun. It's been ages since we last did this.
*Everyone listen up! I have a surprise to show you.* Frisk was holding what looked like a... Soul. Suddenly there was a blinding light and when I looked back I saw the familiar face of someone whom I thought I wouldn't see again.

"Chara!"

Hey guys hoped you enjoyed the first chapter and give me your thoughts on it this is my first fanfic and I'm excited to finally upload the first chapter if there are some mistakes let me know so that I can correct it.
Until next time, bye!