Disclaimer: I do not Undertale or any of the Undertale-based terms here.

Warning: Contains heavy spoilers for the True Pacifist ending.

-P-

Nearly 20 years have passed since the monsters were freed from the underworld. Nearly 20 years have passed since the world changed forever. And yet, after all this time, neither Teach nor Mr. Dreemurr appears to have aged a day.

"Rea!" a voice sounded out from behind the boy. "Hey, Rea, over here!"

The boy looked and saw an adult monster waving him over. He sighed deeply. Why did they always insist on trying to get him to talk to them? He put on a fake smile and walked over.

"Hey, Teach, what's up?"

"Rea, I've asked you several times to call me Toriel," the goat woman said in a tired voice, having had this conversation countless times before. "I only teach elementary school, anyways. You haven't had me for a 'Teach' for almost six years!"

"Whatever, Teach. What do you need?"

Toriel took a deep breath. "Yes, well, there's apparently a rumor going around that I'm immortal?"

Uh-oh. "And what does that have to do with me?"

"Well, you are supposedly the one who started this rumor."

Rea stated silent for a second, before blushing furiously. "W-whoever told you that?"

"That would be Frisk."

Damn snitch. "Yeah, well there are people who say the same thing about him…or her…seriously, what ARE they?"

Toriel purposely ignored the second half of that statement. "Yes, well, they don't age due to them having faced off against Flowey. It's only natural for that much power to alter some things about them-"

"You keep saying they, it's a simple he-or-she answer-"

"-but having seen what Frisk has seen, it's outright surprising that they-"

"You literally have done it four times in one answer-"

"-are fully human at this point. In fact, I'm starting to wonder if they function a bit like monsters, due to being that exposed to them for such a long time."

"Five times," Rea said miserably. "And I wasn't the one who started the rumor." One glare from Toriel got him to finish that statement: "I'm just the one who started the spread of it…"

"And may I ask why you would do that?" Toriel's voice said peace, but her eyes said murder.

"W-well, I just starting noticing after it was pointed out to me. I mean, you don't look like you've aged a day since you go here, and that was 20 years ago, if the history books are accurate."

"I take it you didn't pay attention in my class?"

"Not even a little," Rea admitted.

"Well, then you would know that my species children age until their parents die, and resume aging when their children are born. Between those two events, their age remains the exact same indefinitely."

Rea was silent for a second, but then perked up. "Wait, then if it's open information, then why were you upset that a rumor started up about it?"

"Because, child, it's annoys me how few people either payed attention or remember my class at all."

"Well, you said yourself it was six years ago," Rea argued.

"I first saw the surface twenty years ago," Toriel said, "and yet I still remember vividly the look of the sunrise."

"Yeah, but that's actually something that's important to remember," Rea said before realizing his mistake.

"And just what are you implying about my class?" Toriel said after a long pause.

"I-I was j-just saying…I mean the sunrise is easy to pay attention to, and not at all boring or easy to fall asleep watching-"

"I'm just saying, Calibri," Faire said to the skeleton boy, "that even though we're supposedly equal on a legal level, you have to admit there are some serious differences between humans and monsters that naturally make us superior."

The skeleton looked at her blankly before rolling up his sleeves.

"YOU SAID WHAT!?" Rea virtually shrieked at Faire from the ice bath he was in.

"I just said humans are naturally superior to monsters," Faire said, adjusting the ice pack over her eye.

"And you're saying it's his fault the fight started?"

"No, I'm just saying it wasn't very gentlemanly of him to hit a girl."

"Yeah, will it was a bit of a bitch move to call him inferior!"

"Well, they, aren't they? That's what my parents always say," Faire said with irritation.

"It's unfortunate you think that way," Toriel said, "but that was a very rude thing to say. And, Rea, let me say again how truly sorry I am," she said, nursing the burns that covered the boy's body.

"Eh, don't worry about it, Teach. If Frisk's stories are true, you pretty much beat them within an inch of their life just to try and keep them safe. Besides, I was kind of asking for it by that point."

"Still, that was no excuse for me to use my fire magic against you…"

"Seriously, Teach, stop being such a nanny goat," Rea said before remembering who he was talking to. "Well, anyways, it's not the first time a monster's attacked me. And remember those test results? I have one of the most powerful souls to come around since Frisk's. A few little poofs like what you were doing aren't going to break a soul that strong."

"Still, I shudder to think what would have happened if I hadn't stopped myself when I did."

"I'm surprised you held back at all," Faire said. "After all, it's just like a monster to assault a defenseless human boy."

Rea thought Toriel would get angry, but she just looked even more upset at that.

"Sis, shut up. I insulted her class, her teaching methods, and her species in general. Unlike you, though, mine was accidental. And for the last time, Teach, stop worrying so much! If anyone hassles you, I'll make sure they find out exactly what it's like when humans and monsters work together."

"Ugh, Rea, it's disgusting how you think these…things…have emotions. They're monsters!"

"Sis, shut up, or I'll shut you up," Rea flared. Faire huffed, but stayed silent regardless.

Yeah, maybe this is what we were taught, Rea thought to himself, but that doesn't change the fact that these things are living creatures. The can feel pain, they can love, they can get married, they can have children.

Rea perked up as he remembered a question he wanted to ask earlier. "Hey, Toriel, would you ever want to have children? I mean, you're what, mid-thirties? You'd still have some time left to enjoy it."

A look of pain crossed Toriel's face. "No, not after what happened last time."

"Last time?" Rea asked, interested.

"Ugh, they probably ate it, or something like that."

"Faire, I swear to God…"

"You see, Rea, I had a child a long time ago. A long, long time ago…"

Hey guys, I've recently been getting super into Undertale. And, I also got super pissed when Goat Brother didn't get the happy ending he deserved. Not to mention, W.D. Gaster is one of the more interesting mysteries in any game I've played. Note, at the time I am writing this, little canon data has been released about Gaster, so this may very well turn into an AU if more info comes out later.