Falmercia sighed and sat on the floor.

"What do you mean you're in?" Flowey protested, "You more than anyone knows that Falmercia can't be trusted!"

Sans sighed, "i'm tired. look, we know that she can't lie, and i have a feeling that there's something going on that we don't understand. the deal seems good, so why not trust it?"

Sans caught Falmercia sneaking a glance at him, confirming his suspicions. Something was up, that noise earlier didn't come from nowhere.

"DEMON, YOU DIDN'T ANSWER ME, ARE YOU ALRIGHT?" How was it that Papyrus, naïve as he was, managed to be more perceptive than him?

Sans caught Falmercia wincing, "Heh, I'm only in agonising pain, nothin' that you need to worry about." Falmercia dismissed.

Agonising pain?

"I know we didn't deal enough damage to you to cause that much pain. Not with the stats you have." Chara pointed out, eye's narrowed.

Sans CHECKED Falmercia, Chara was right. He stared at Falmercia to prompt an explanation.

Falmercia remained silent for a good minute before breaking, "Ugh, look, Papyrus here somehow managed to deal a lot of damage to a fundamental part of my soul. Damage that has never been done to any demon before, so please, accept the deal so I can check it out!" Falmercia spoke quickly in frustration, fear lingering in her voice.

"welp, i'm in." Sans accepted the deal.

"Me too," Frisk said quietly.

"I, THE GREAT PAPYRUS, ALSO ACCEPT!" Papyrus joined in quickly.

Chara stared at Falmercia for a moment longer, before accepting, "Fine, I also accept, but if you hurt any of them, I swear…"

Flowey looked at everyone in disbelief, "You're all IDIOTS, but fine, I accept."

Falmercia nodded impatiently before waving her arm, a familiar looking sloth-stained soul appeared in front of her, "It's technically not exactly the same a Boss Monster soul, but it's the best I can do." Falmercia explained before flicking her wrist at Flowey.

Flowey glowed so brightly that all the mortals in the room had to look away, when the light died, Sans looked back to see Asriel looking like he was in his old body.

Next, Falmercia reached in Undyne's direction, Undyne fell to her knee and Sans frowned. He almost raised an attack on Falmercia when he saw a red soul force its way out of Undyne's chest and into Falmercia's hand.

"And like that, the contract is broken," Falmercia said bored. Undyne's armour disintegrated away into dust that blew away to reveal her normal armour. Undyne blinked a few times before falling unconscious from exhaustion.

Probably for the best, Sans realised. He didn't want to have to deal with Undyne right now.

"And now that I have Frisk's soul and its DETERMINATION, I can do this." The RESET button hovered in front of Falmercia and for a flicker of a second, Sans worried that Falmercia just might betray them and press it, but instead, she smashed her hand through it, the button crumbling into nothing.

"And that's all, you can't hurt me, and I can't hurt you." Falmercia looked around the room, looking for objections, there was none.

She raised her hands to her chest and brought out a black soul, with one chain wrapped around it, and a second crumbling away.

Sans narrowed his eyes at the sight and moved closer. Falmercia instinctively flinched away but allowed him to get closer.

"i'm guessing it's not supposed to look like that." Sans pointed out the obvious.

Falmercia shook her head, "The chain's broken."

Sans stared at it a moment longer, watching as Falmercia tugged the remains of the broken chain off of her soul and it faded into nothing.

"and, what did it do?"' He asked.

"Each of the chains has a different purpose," Falmercia explained in a rushed voice and obvious discomfort. "The first chain, the one that broke, stops demons from feeling emotions like you mortals do, the other here, stops us from feeling remorse."

She said it so simply, but the implications blew Sans away. So basically, up until now, Falmercia was a sociopath, but now she could feel like a regular person. Could he even judge her as the same person? Yes. Yes, he could, this wasn't like Flowey and Asriel, she could still feel, if not on the same level.

Still, Sans watched as Falmercia fearfully put her soul away, sighing in relief as it went out of sight. Falmercia had never experienced emotions on this level before, so she pretty much had the emotional maturity of a seven-year-old. How old was Frisk again? Oh yeah, twelve. Frisk was more emotionally mature than this centuries-old demon.

Sans sighed, why was the universe making it so difficult for him to hate the 'bad guys'?

Sans heard heavy footsteps enter the throne room and he realised that the King must be back and the fire must have been put out.

"Oh good, my next contractor is here," Falmercia said, having calmed down a bit she seemed to be back to her usual annoyingly confident and bored self.

Sans narrowed his eye-sockets at her, and she smiled lazily in response.

"Don't worry, you'll like this one." She said as Asgore walked in.

"Howdy, who are yo- Asriel, Chara?!" Asgore stared at Asriel in shock, and Asriel ran up and hugged his father, Chara guiltily following him.

"Dad!" Asriel cried tears of joy.

"My son! How did this happen?" Asgore asked, gently pulling away to see Asriel's face.

"It's a long story, but, um, Falmercia here sort of had a lot to do with it." Asriel pointed at the demon, who waved lazily from her position on the floor.

"Hey, I'm a demon, but don't worry, 'cause right now I'm bein' a nice one." Falmercia yawned and stretched. "Doin' this was part of a contract. And if you're willing to hear me out, I wanna offer a contract to you too."

"To me?" Asgore asked, narrowing his eyes in confusion.

"Well, I have seven souls, so I can open the barrier, all I want in turn is a place to stay and a warm bed, rent-free." Falmercia set out her deal, and Sans had to agree that the deal was fairly reasonable, everyone's freedom for a permanent room wasn't too bad, and it was part of their own contract that they'd be able to keep an eye on her.

"Oh, my! Well, of course, you'd be welcome to stay with me- with us" Asgore corrected himself, gesturing at Chara and Asriel.

"That's what I was hoping for. The last place I stayed the demon hunters attacked and took me away, I doubt they'd be stupid enough to attack the monster king's house." Sans shook his head, even with emotions, Falmercia had multiple layers of thinking going on behind those black eyes.

"So, do we have a deal?" She asked again.

Asgore did not hesitate, "Deal."

The immediately heard the sound of the barrier breaking.