Undermates

Prologue

Okay, here we go. For the win! Let's start.

It started out like any other RESET. Frisk fell down, met Toriel, and began the pacifist route. They went through, sparing everyone as they went until they reached the end of the Underground. After Hyperdeath was defeated, Frisk went back to the patch of golden flowers where they had originally fallen. Upon their arrival, they met with Asriel and spoke for a while. After receiving sage advice from the goat-flower, Frisk returned to the barrier where all their friends were waiting.

The sun was setting over the ridge, a beautiful sight for the monsters who had just been freed. Frisk's mocha locks flowed in the wind and their squinted eyes peered at the lovely light spilling over the mountain and forest below.

"Oh my..." Toriel said as she caught her first glimpse of the world above.

"Isn't it beautiful, everyone?" Asgore asked, sighing as the breeze billowed his cape.

"Wow... it's e-even better than on TV." Alphys breathed as the warmth of the fading sunlight soaked into her scales. "WAY better! Better than I ever imagined!"

"Frisk, you LIVE with this?!" Undyne gasped as her amphibian form heated up, "The sunlight is so nice... and the air is so fresh! I really feel alive!"

"HEY SANS... WHAT'S THAT GIANT BALL?" Papyrus asked, staring directly into the sun.

"we call that 'the sun' my friend." Sans said.

"THAT'S THE SUN? WOWIE!!! I CAN'T BELIEVE I'M FINALLY MEETING THE SUN!!!" Papyrus shouted.

"I could stand here and watch this for hours..." Asgore remarked.

"Yes, it is beautiful, is it not?" Toriel sighed, "But we should really think about what comes next."

"Oh, right." Asgore cleared his throat, "Everyone... This is the beginning of a bright new future. An era of peace between humans and monsters. Frisk... I have something to ask of you." Asgore turned and leveled to Frisk's height, "Will you act as our ambassador to the humans?"

Frisk thought for a moment before nodding excitedly.

"YEAH! FRISK WILL BE THE BEST AMBASSADOR! AND I, THE GREAT PAPYRUS... WILL BE THE BEST MASCOT! I'LL GO MAKE A GOOD FIRST IMPRESSION!" With that, the eldest skelebrother ran down the mountainside to greet the humans.

"welp." Sans remarked, "someone's gotta keep him from getting into trouble. see you guys." With that, the younger skelebro winked, turned around, and walked back into the Underground to lead the remaining monsters out.

"Man, do I have to do EVERYTHING?" Undyne rolled her eyes, "Papyrus, wait!!!" With that, the fish lady ran after the skeleton down the mountain.

"Hey, Undyne!! Wait up!" Alphys called as she rushed after her girlfriend, tripping on her lab coat.

"Whoops." Asgore rumbled. He turned to Toriel, "Uh, should I do something?" Toriel said nothing, but the glare she gave him was worth a thousand words. "Well, gotta go!" Asgore turned and walked away as quickly as possible to avoid the look-that-could-kill aimed at him.

Toriel watched everyone move down the mountainside, "It seems that everyone is eager to set off." She continued to watch the fumbling monsters for a bit before turning back to Frisk, "Frisk... You came from this world, right...? Do you just have a place to return to, do you not? What will you do now?" Tears welled up unbidden in the former queen's eyes.

Frisk sighed and turned to Toriel, "I want to stay with you." Frisk said quietly, hoping desperately that Toriel would not reject them.

"What? Frisk..." Frisk hunched over, waiting for the denial. "You really are a funny child. If you had said that earlier, none of this would have happened. It is a good thing you took so long to change your mind. Hee hee hee." Toriel giggled, "Well... I suppose. If you really do not have any other place to go..."

Frisk shook their head, thinking, I ran to Ebott to escape my father, I will NOT go back.

"I will do my best to take care of you, for as long as you need. All right? Now, come along. Everyone is waiting for us!" With that, Toriel took Frisk's hand and began leading them down the mountain. Frisk relaxed into their Goat-mom's grip; they had made a promise to themself that there would be no more RESETs, not after Chara's Genocide rampage. Frisk had almost been unable to prevent their erasure of reality, but with a little help from Sans, they were able to do one last RESET and finished their last run. Now that they were going to let the timeline run its course, everything would finally turn out all right.

...

Or would it...?