October 31st, 203X

Undyne POV:

I didn't even care that today was supposed to be a very spooky day for monsters. A day that, to most monsters, was a very bad day, but the humans were happy to share what the day was. Not only was it the day we'd probably be able to destroy the barrier, but it was also the human's holiday of Halloween, where their traditions included dressing up as monsters and other inventive characters and going around and asking for candy.

But for monsters, it was much more grimmer. From the oldest records in history, today was the exact date where the monsters went to war with the humans... and promptly surrendered after just a single battle. After all, humans were much more powerful than monsters, even if they were able to lift up huge boulders while the most a human could lift up would be a child on average.

"Okay, how about we do this, guys?" Chara suggested to everyone who came to the castle to see if the barrier would be destroyed. "When we test the barrier out, if we succeed in getting out of here, then we'll actually have a reason to celebrate today. But if the barrier doesn't break, then we'll just do the human tradition. Where we go out and dress up in different costumes and go around the Underground asking others for candy. Deal?" Chara asked, me smiling at that as did Alphys and Asriel.

"Sure, that sounds like a good alternative, though it would be depressing if it didn't work," I admitted.

"It's just something to test out. And if it does happen to work, then we may finally be able to leave the Underground and integrate back into human society. That would be a very good thing to happen... I miss the fresh air of the surface," Toriel said with a smile.

"Okay, time to go to the barrier and test it out," Chara said as she and all the other humans went through the door that led out of the castle to the surface. And we watched from our position, seeing the barrier was completely white and it was like an endless room.

"Okay, everyone. Use your respective weapons that you've been using. And use them all at the exact same time. We will time it. When I count to three, we all attack at the same time," Coraline said as she held her knife on her person... the one she used when she first arrived. As for Kristof's weapon? It was his guitar, which I now saw was like a scythe of sorts. Everyone else had their own weapons. Chara and Bow had their Gaster Blasters, Mitts had his gloves, Tutie had her ballet slippers (which were actually had pretty sharp heels), and Brian had his notebook. "One. Two. THREE!" Coraline exclaimed, everyone of the humans attacking the barrier all at the same time... and when we saw what happened after, we gasped. The barrier started to break! We could see cracks form all through it! But just when we were hoping that it worked... the unthinkable happened. The barrier healed itself back to normal health and everyone gawked.

"W-What the?! S-Shouldn't it have broken apart from all of us attacking it?" Bow asked in shock.

"I don't understand... there are seven humans, so why didn't the barrier shatter?" Asgore asked with a sigh.

Chara then sighed as she then looked at Kristof and Coraline, and then back at the barrier. "I think I may have an idea about that," she said. "Kristof and Coraline... they're not really the same as us other humans. Not only do both of them come from the future timeline, but both of their souls are now inside of robotic bodies. Maybe the barrier decided that they weren't humans... but monsters instead?" Chara asked, everyone looking at the robotic duo and them frowning.

"That's probably the only real explanation... after all, the barrier looked like it might be able to shatter... but it only accepted five of us as actual humans, so the barrier simply returned to its original state of being," Brian frowned as he pushed his glasses up again.

"So that proves it then... we aren't humans, but monsters?" Coraline asked, her sighing and looking down at the ground.

"What are you talking about? You've got a human soul on you, so that makes you a human in my eyes," Asgore smiled. And then Coraline said something else.

"That's not what you said... in my timeline..." Coraline sighed, Asgore gasping at that.

"W-What did I say?" he asked.

"You only said it if I possessed Frisk in the Genocide timelines, back when I felt no love, no happiness, just emptiness. Frisk and I would've been Level 20 of Violence and, when you saw us, you'd ask what kind of monster we were... and then we'd kill both you and Flowey... before I erased everything... and the timelines reset..." Coraline said with a face of sadness.

"Hey," Chara said as she went to her future self and hugged her, Coraline hugging back after a few seconds. "That's all in the past, Coraline. You're cured of your darkness, remember? You've also got quite the fan following in the airwaves. You're currently beating Mettaton in views, you know?" Chara smirked.

Coraline smiled at that and looked at every single one of us with a small smile. "You're right... I shouldn't think of the horrors of my past... just think about and do what I can to mend those mistakes," Coraline smiled.

"Don't worry, Coraline. Though we may not have been able to defeat the barrier, keep in mind that there are still three more humans on their way down here one day. The owners of the Green and Yellow souls and Frisk. Whenever they are all down here, we can try one more time. And I'm positive that it'd work!" Mitts smirked.

"Yeah! We're sure to have our day in the sunshine at some point!" I smirked widely. And then my fins vibrated again, me groaning as I then grabbed my water bucket and dunked my head in it and breathed through my cheek fins again, it getting easier and easier with each time I did it, but it really annoyed me.

"That's your time of the month, huh?" Tutie smiled at her.

"Yeah... no need for anyone else to share what they go through, I'm already aware," I said with a frown.

"Well, I'll share, since I'm not like the humans," Alphys said, her then whispering it in my ear. "Every month, my skin molts... it's pretty gross," she said, me looking at her with a smile.

"No matter, Alphy, you're still beautiful," I smirked at her as I then kissed her.

"Hehe, you two were made for each other," Asriel smirked.

"Yeah," Chara smirked, though I could see she was looking at Asriel with a blush, but he didn't notice. I smirked as I could feel it in her heart. She felt love. But it was a much more powerful love for Asriel in particular, like with me and Alphys. I then smirked and texted her something, Chara looking at her phone at the text I sent, her gasping and hiding it with even more blush, her then glaring at me. "Undyne, talk. Now," she frowned at me. I smirked at her in response and stuck out my tongue.

"I dunno what you're talking about," I smirked, Chara then approaching me and grabbing me by the cheek fins, me gasping as she drug me out of the room and I simply put up with it as she then took me to Asgore's basement and locked the door.

"What is this text about?" she asked, me smirking at her.

"I could feel your love in your soul, Chara. You're in love with Asriel," I smiled at her, Chara blushing at that and pouting at me. "Hey, don't look at me like that. I'm sure he'd feel the same way towards you, right?" I smirked, Chara sighing and looking to the ground.

"It's... It's kind of hard to say to anyone... yes, I do love him... he's so cute and always so nice... the nicest guy I've ever met... but I don't know if he'd be willing to share those same feelings with me... how do I tell him?" Chara asked.

"Do the same thing I did when I shared my feelings with Alphy. Get someone to back you up and just be honest. And if he says no, well at least you tried, right?" I smirked at her. Chara breathed inwards and sighed, her looking at me with a smile.

"You're right... you and Alphys will be my backup. And we'll meet up at Mettaton's new burger joint for a double date, but I'm gonna tell Asriel it's just hanging out," Chara said with a smile.

"You're talking about going to Burgh's workplace, eh? He's only 12 years old and he already hates that job," I smirked.

"Eh, he's sure to be okay with us eating there. He's quite nice when you get to know him," Chara smirked.

"I know, he just isn't allowed to talk unless you buy something," I smiled back.