“Sans, is all that true?” At first Sans had no idea what Undyne was talking about then he realized that Papyrus probably told them everything.

“Yes.” His voice was a low, quiet rumble.

“P-Papyrus, a-are you?” Alphys trailed off and Sans realized what Papyrus hadn’t said.

“He is not my blood brother.” Sans nudged Papyrus off him and Papyrus got up, Sans transformed into his usual form, he only had two.

“Undyne, are you ok?” Papyrus looked his friend and mentor but she waved him off.

“I’m fine. Sans, why did you keep this from us?” Undyne looked at Sans, eyes begging for answers.

“You know how people react to even the stories of dragons, I also want to live a seperate life as me, not the Judge. I don’t want Papyrus to get hurt because of me being part dragon.” Sans stated with calm sincerity. Undyne sighed.

“I can understand that. But why do you protect him if he isn’t your brother?” Undyne asked.

“Wouldn’t you? You aren’t related to him.” Sans retorted. Undyne opened her mouth to reply but then, thinking better of it, shut her mouth.

“S-Sans, did you f-figure a-anything out about the d-disappearances?” Alphys pipped up. Sans nodded.

“Not much, just that nobody that is with me disappears. If I am there, they can’t get taken. In the video, when Undyne got into view of the camera, there was a shadow. After I came in, it disappeared. I didn’t notice anything there when I was there though.

“Shadow?” Papyrus looked at Sans curiously. Sans magically grabbed the others and teleported back to the lab. He then pulled up the video they had watched earlier, he fast forwarded to the point right before he came in and paused it.

“Shadow.” Sans pointed to the shadow. Undyne nodded.

“Yeah, I was grabbed by an invisible force and was being brought towards that shadow. I was able to resist enough to get free but passed out right after I got there. Thanks for saving me Sans.”

“No problem, ‘Dyne. I think the shadow is behind the disappearances. Undyne was the first boss monster that’s been attacked. Maybe because it hadn’t gained enough energy to do so yet. I'm not sure. I’ll be keeping a close eye around.” Magic hid Sans’s dragon parts and he began to walk out.

I’ll stay with Undyne Kindness piped up, knowing that she needed to watch for the Shadow. Sans sent a mental agreement.

I’ll stay with Papyrus. Bravery zipped in with Justice close behind, his hyperactive voice reverberating in Sans’s head.

I’ll watch Alphys. Justice hovered over the lizard monsters head, speaking with a Western accent.

“Sans, where are you going?” Sans stopped and Papyrus’s unusually quiet voice.

“I’m going to see if I can find that Shadow.” Sans replied and he teleported away.