Requester: XenoSaiyan, Prompt: Remy deviates from the rest of the group during an investigation into who destroyed Frisk's local Multiverse and meets.. a somewhat familiar, all-knowing face. UNDERTALE, it can maybe be switching between the main investigation and Remy being guided by CORE Frisk to gain intel on Error!Sans after Frisk just outright tells Remy who did it. One scene could be Remy being brought to the Omega Timeline to meet the last survivors of the Multiverse. Two parts?

Remy stretched as he walked through a forest. He was glad to be here because it gave him some calm in the thunderstorm that had been his life these days. 

"Ah, I wonder how Shirou and the others are going so far," he hummed to himself. He was excited to see how far they had gotten in their investigation. After Ryder and Jinpei's fight with Kim Soyoung, it was clear that they had to up their game. He could only hope that they were able to stop her and her husband, Error!Sans, before it was too late. 

He looked up to the sky, his mind wandering to think about all the things they had learned about the entire mess, and he whistled as he got his blood bottle out and drank from it, feeling refreshed afterward. He was glad that he hadn't tried to attack those kids he had met. Otherwise, Professor Noh's old partner would not be pleased, and neither would be the old man who was normally so jolly it was terrifying.

"Hello."

He blinked. 

Out of nowhere, a grey child had appeared right in front of him. A pair of blank eyes stared back at him. 

And this child looked like his twin. 

"H-Hey?" he waved. 

"You seem too shocked to even comprehend this," the child remarked. "Give me a minute."

A blink and the grey child looked a bit more like Frisk. 

After that, it clicked. 

"W-WHAT THE?!" he jumped onto the tree, eyes wide as he clung to its trunk for dear life as if he had nothing better to do. What was this? Was this another version of Frisk? In a new world? 

Well, it wasn't impossible. Each world did have replicas of characters from other worlds, so it made sense. 

Yet something about them made Remy feel that this wasn't the case for this Frisk. From what he had seen from that attack from Kim Soyoung and Error!Sans on the children in this world, they required knowledge of the Bugsbot world. He doubted that the Frisk of this world -- well if they existed -- would be aware. 

"Calm down," the child said. "I am Frisk of the CORE world, known as Frisk Marusina. It would be nice if you could call me just Frisk." 

"O-Okay then," he relaxed slightly. He had heard of CORE!Frisk from the AU database, but he only knew that they were like Chaos. Nothing much could be found after all. Plus, they hadn't met the SRS members before, even in the multiversal meetings Chaos had had from time to time. "I'm Cha Remy, nice to meet you." 

"Likewise," CORE!Frisk smiled at him. "Anyway, I felt that you have questions about Error!Sans. I'm here to answer them."

*************

"CHA REMY COME BACK HERE WHEREVER YOU ARE!" 

"You know that it won't work, right?" Keita deadpanned to Eun Bae, who pouted as she crossed her arms. 

"Excuse us for being annoyed," Ryoka threw his hands into the air. "Why did he have to run off like that?" 

"He said that he had an idea of sorts on how to solve this case," Taeyang said as he looked up while reading a book about Error!Sans. 

"I wish he would use his brain once in a while," Daisuke groaned. 

"When did he ever?" Shah sighed. "I can tell you that as one of his longest teammates." 

"Good point," Jumbo crunched on some chips without much care. "He doesn't think. He just goes." 

Ryoka exhaled, "Sadly that's the part of his appeal." 

"What's appealing about someone so reckless it's a terrifying thing to look at?" Yuujin asked. 

"It's what appealed to you about Haru and Tagiru, Yuujin," Natsume drily stated. 

"... Oh." 

To be continued...