"Where is this?"

"This is the Omega Timeline. A safe haven for people from UNDERTALE AUs," CORE!Frisk explained as they stood in a restaurant named Grilby's. All around, one could hear the laughter and cheer in the air. A really peaceful atmosphere hung in the air. 

"This is really nice," Remy admitted, a smile on his face. He enjoyed this calm. It was a stark contrast to the chaos always around in HQ. 

"I know," CORE!Frisk grinned. "I found this place, and I've been using it as a shelter to all those who need it. Well, in the Undertale universe anyway." 

"That's neat. A shelter, huh? So you're a Fate Changer of sorts?" 

"I suppose you can call me that. But I wasn't born into the role, so you can call me an Artificial one?" they shrugged. 

"Ah, I see. You were given the title by Chaos-sama himself?"

"I never met him in person, honestly, so maybe no." 

"Oh... I think he did, though. There are times where certain AUs are entrusted to people not from that place. Plus, if he hadn't wanted you to get this place, he would have taken action. None probably means that you've been approved of." 

"That's new.... But thanks." 

"Hey, no worries. I should be saying that to you." 

"That's sweet. But back to business. You can handle it yourself right?" 

"Yeah I can," he nodded. "Thanks for bringing me here, by the way. We'll meet up later I suppose?" 

"Good idea," they agreed. "Be careful, though. This place is not to be taken lightly." 

"I have my boomerang, so don't worry," he reassured his guide. "I'm also quite good at fighting, so I'll be good on my own." 

"Alright then. I'll be waiting for you near the entrance. Stay safe." 

"Likewise to you," Remy said before he walked into the crowd, determined to find information about Error Sans. 

********

After a while, he arrived at the entrance, his notebook filled with scribbles and notes on Error Sans' past and his relationships with certain people. An example would be Ink!Sans, who told him all he knew on his glitchy counterpart. 

"Did you find anything?" CORE!Frisk asked him upon noticing his arrival. 

"I found a lot," he smiled, but it soon turned into a frown as he added, "I still can't see the big picture. Something seems off about Error. I see that he's connected to Kim Soyoung, but I don't know how."

"Do you really have to know?" CORE! Frisk tilted their head. "I thought your main objective was to fight Kim Soyoung and Error Sans." 

"It is, but I want to know who connected them. Or what. Or even, what caused the destruction for most of their homes," he gestured to the people scattered around the place. "My Frisk said that it was Error Sans, according to the database, but I remember seeing accounts about a "perfect world", and that doesn't match Error Sans at all. So it has to be a different person. But who? I want to help these people get justice, at least, for what they've been through." 

CORE!Frisk closed their eyes, a smile on their face, after some contemplative silence and said, "I've heard rumours about the TTS, but I never expected you guys to be this hardheaded." 

Remy flushed, "It's just second nature..." 

"Nevertheless, you show a strong sense of justice. If there's hope for this world, it's definitely through people like you," they grinned. "Just remember that when you go after Error and X Gaster." 

"X Gaster?" his eyes widened. "Is that-" 

CORE!Frisk's answer to that was to snap their fingers, opening a swirling grey vortex under him. It sucked him in, and the last thing he saw before it closed was their half-eye smile. 

"Stay DETERMINED, okay Remy?"

Then, he fell onto a sofa in the TTS HQ, with the information he needed. 

But one thought stayed as his friends and family noticed and ran over to welcome him back, even though it had just been a day or so. 

X-Gaster... That's the name of the person who indirectly caused the Undertale multiverse's destruction...

He wasn't going to forget. He was going to use this information wisely. 

It was a promise.