"Hey, Alphys and Undyne!" Toriel yelled from the opposite end of the restaurant.

Toriel and Sans were in a large corner booth near the back of the restaurant. Sans was in a black suit that Frisk told them to bring. Sans knew what Frisk was planning, but that plan failed a long time ago. Toriel was wearing a sleeveless purple sparkly dress, that wasn't too short.

Sans looked over to where Alphys and Undyne were worriedly. What if they didn't like him? It's been too long. Sans has changed so much compared to back then. When he was normal.

Undyne and Alphys walked over quickly excitedly, or at least Undyne was. Alphys looked nervously at Sans as she walked over.

"Hey, Tori!" Undyne yelled back before sitting down next to her.

Toriel looked at her happily, while Sans looked at the couple nervously. "H-hey there," Sans somehow got out his jaw despite his jaw was shaking as he spoke.

"Hey S-Sans," Alphys said to Sans only a little less nervous than he was.

Sans smiled, even though it wasn't genuine. He knew that Alphys was worried about him. He's known Alphys for long enough to understand her expressions.

Sans shrugged it off, as Toriel scooted more towards him to let Alphys sit down. Toriel smiled at the cute couple in joy. "So, I haven't seen you two in a while, how are you? What have you been doing? Anything new?" she said with a bright smile that almost brightened Sans.

"Well, nothing re-" Alphys started to say nervously, before being cut off my Undyne.

She excitedly said," We're getting married next summer!"

Sans thought it was pretty obvious who proposed, so he decided not to ask. Toriel giggled at the two. However, Sans face changed back to his relaxed status, before looking around nervously trying to find anything else he could focus on that wasn't the three monsters next to him.

"Hey, Sans, I haven't seen you in what? Seven years?" Undyne said after noticing that Sans was looking around the restaurant," What you've been doing?"

Sans slowly moved his head towards Undyne. He sighed. "I took a scientist job," he said not knowing what other to say.

"You? A scientist? That has to do work? I very much doubt that," Undyne responded with a smirk.

Sans sighed, and rested his head on his right arm," I changed, Undyne. If you couldn't tell already."

A spear appeared in Undyne's right hand, before she said," Who the hell are you?"

"U-Undyne, I-I'm Sans! What are you-" Sans tried to get out his jaw before the spear sharply hit his chest.

"WHERE IS SANS?!" Undyne demanded, jumping on top of the table.

"Undyne," Toriel stared at Undyne on top of the table with harsh eyes," Sit down."

Undyne and Sans looked at her, then back at each other. As Undyne slowly crawled back to her side of the table, her dress seemed to tighten around her. Everyone in the restaurant stared at the small booth of monsters. Sans began to hope that they'd get kicked out, so he could be out of this conversation.

"We don't want to be kicked out, Undyne," Toriel stated, which made Sans sweat a bit.

Undyne looked at Toriel nervously. Sans tried his best to look away from Undyne, but his eye started to light up with his yellow magic. He put his skeletal hand on his left eye, even though he knew it would go straight through his hand anyway.

"Sans? Are you okay?" Alphys said noticing the air around Sans becoming a deep yellow color.

Sans was looking at Toriel nervously, before answering," I'm alright, I guess."

"What happened to you?" Alphys said nervously," I-if you don't mind me a-asking."

"Well, um," Sans started to say before pausing trying to look for a good reasonable answer.

A moment of silence fell upon the table.

Each one of them running through their own mind.

"Where's Sans?"

"Why did Undyne try to do that to her friend?"

"What do I do?"

"How did the fusion happen?"

A phone ring lifted the silence. It was Toriel's. "Sorry, but I must take this. It's Frisk, excuse me," she said before Sans got up to let her leave the booth.

She left while picking up the phone," Hello? This is Toriel,"

"It happened right after monsters left the underground," Sans said trying to continue the conversation.

"What happened, Sans?" Undyne asked gritting her teeth a bit.

Sans sighed. "This," he said taking his hand off his left eye.

Undyne smirked," What the he-"

"Sans, how did you change your magic color?" Alphys questioned, but accidentally cut off Undyne.

Undyne's back became straight as she remembered his magic used to be blue. "Wait, monster's can change there magic?" she asked now also curious.

"No, they can't Undyne, but there is an exception. If a monster fuses with another monster then their magic can change based off the colors of each monster. It is very rare for two monsters to fuse however. Each would have to be willing to do it, and over 70 percent of the time it fails," Alphys said trying to explain to Undyne.

"Ok, but Sans obviously looks different, so can't we just assume that he did that?" Undyne said in response pulling her arms up to gesture at Sans' different form, but then immediately set them down to let Alphys talk.

"Yes, but Undyne. If he willingly fused with someone, don't you think that he'd, you know, tell someone about it?" Alphys said a bit nervously.

Undyne shifted her head towards Sans, her old friend, then back at Alphys. Undyne sighed. "Well, I guess so," her vision moved back towards Sans," What happened to you?"

"Well, a little after we left the Underground," Sans began.