Disclaimer: I do not own Undertale. I only own my OC(s). Enjoy.
Author's Note: I made Error!Sans speak regular with little glitching, because it is easier for me to write that way.
"Why?" is all TT!Kathy could ask.
"Because doing a genocide route is not what we want. We want a pacifist route." Original!Frisk responses in a mixture of coldness and Determination.
"You can't fix everything just by going back in time! You'd make them go insane!" TT!Kathy yells.
She tries not to cry. She has witnessed 20 different timelines. TT!Kathy must stop them from hitting Reset, but does not know how.
"Don't worry. We will get the pacifist route. We will Resets for it will be worth it in the end." Original!Frisk said before they and the rest of the humans press the Reset button in sync.
- KingTale: Castle -
TT!Kathy wakes up from a nightmare. Her entire body is shaken from the dream. She is even sweating.
"Are you okay?" a gentle voice asks.
TT!Kathy turns towards the source of the gentle voice. It is a kind looking skeleton. The skeleton has blue eyes, a light grey shirt with dark grey sleeves, a dark blue fluffy scarf, dark blue pants and dark gray shoes. TT!Kathy notices the red hearts on the sleeves of the skeleton.
"Natalia?" TT!Kathy said taken aback.
"Do I know you?" the royal looking skeleton answers with confusion.
"I'm sorry... you look like someone I know." TT!Kathy said shyly.
'But my Nat is a brown skeleton with odd marks and not a white skeleton that looks like a queen.' TT!Kathy thinks as she calms herself down.
"Oh! Don't worry. I get that all the time." the royal skeleton said as she waives her hands in the air.
She seems to be panicking for making TT!Kathy act shy. TT!Kathy gets off of the floor.
"I'm TT!Kathy. I'm actually from another AU. Nice to meet you." TT!Kathy said with a small smile to her look-alike friend.
She isn't sure why she told the royal skeleton that sentence. Also she is in a castle. How did TT!Kathy get here?
"I'm the royal guard of this castle, Natalia. KT!Natalia works. Nice to meet you TT!Kathy." KT!Natalia responds with a royal smile.
TT!Kathy froze. She thought her brain is playing tricks on her.
"Royal Guard?" TT!Kathy said as she is in shocked with KT!Natalia's response.
"Who's yelling at this time of day?" a scary sounding skeleton could be heard entering the room.
TT!Kathy immediately feels like hiding behind KT!Natalia. The tall skeleton has four purple eyes, a long maroon coat, a black shirt, dark grey pants, a yellow heart locket, and a long dragon tail with a sharp tip. TT!Kathy notices his sharp skeleton hands and his dragon feet that show off his purple claws.
"King Gaster! You are scaring my guest." KT!Natalia said with a stern look.
"Gaster?" TT!Kathy said showing a confused look to KT!Natalia.
He doesn't look like any Gaster she has seen.
"That is King Gaster to you." KT!Gaster said with no empathy.
TT!Kathy flinches.
"Your Highness. What did I tell you about showing compassion?" KT!Natalia said as she approaches her king.
KT!Natalia places her hand on his shoulder. KT!Gaster lets out a small disgruntle.
"I can't help it. People should know their place." KT!Gaster responds as he glares at TT!Kathy. TT!Kathy shudders.
"Now. Now. She is not a part of our kingdom. This is TT!Kathy. She is from another universe." KT!Natalia stops touching his shoulder.
KT!Gaster stares at his guard for confirmation.
"I was actually wondering how I got here KT!Natalia." TT!Kathy quickly said to reduce the tension.
She slowly approaches the duo with cation.
"The royal princes brought you here after you were... knocked out from protecting them." KT!Natalia turns and walks towards TT!Kathy.
She is hesitate with her answer. TT!Kathy has more questions then answers.
"Thank you for saving them." KT!Natalia grabs both of TT!Kathy's hands.
She gratefully smiles at the cat warrior.
"I guess you did save my sons... Thank you." KT!Gaster said with a heavy sigh.
He approaches the small TT!Kathy. KT!Gaster smiles. His sharp fangs looked like he could snap anything in half. TT!Kathy turns pale.
"We really need to work on your smile." KT!Natalia said as she huffs.
She releases TT!Kathy's hands.
"Huh? No! No! I think your smile is great." TT!Kathy said as she panics.
"It's alright human. I was never good at smiling." KT!Gaster said gruffly.
"Don't say that! You will eventually have a smile that won't make people or monsters turn pale." KT!Natalia said as she looks at her king with determination.
KT!Gaster looks at KT!Natalia with kind eyes.
"Dadster!" KT!Sans and KT!Papyrus voices could be heard.
The trio witness the doors swing wide open. The two skeletons run towards their father.
"What is it?" KT!Gaster responds with a look of uncertainty.
"It's the skeleton that killed the human." KT!Papyrus said as tears form in his eyes.
"I died?!" TT!Kathy sounds surprised.
"I did not want to cause confusion or fear." KT!Natalia said with a stern yet compassionate look.
"You're alive?" KT!Sans said stunned to see TT!Kathy alive.
"I would have remembered dying or fighting someone..." TT!Kathy said as she is about to ponder.
"Now is not the time. Show thyself!" KT!Gaster's voice booms.
KT!Papyrus, KT!Sans and TT!Kathy thought that the castle was going to cave in on them. KT!Natalia stands by her king's side.
An odd skeleton that appears to be constantly glitching appears in the room.
"Well. W-Well. Well. If it isn't the thorn, I've been looking for." the odd skeleton said as he slowly approaches the King and his guard.
"Who are you?" KT!Natalia asks with hostility.
"Not really i-important. I'm just here for the thorn." the odd skeleton said in an eerily calm tone.
TT!Kathy feels as if she has seen him before.
"I order you to leave." KT!Gaster lets out a low growl.
"Oh wow! I'm s-so scared." the odd skeleton said in a mocking tone.
He stops walking to he glances at TT!Kathy. Wait...
"You are the skeleton that tackled me into this AU!" TT!Kathy said in an astonished tone.
"Heh." the odd skeleton sneers.
"Do you know this skeleton?" KT!Natalia quickly asks TT!Kathy.
"No." TT!Kathy responds sheepishly.
KT!Papyrus and KT!Sans are hiding behind TT!Kathy, KT!Natalia, and KT!Gaster.
"Awww. This thorn is still k-kicking after I k-killed you earlier." the odd skeleton taunts TT!Kathy.
"I said leave." KT!Gaster asserts himself with a "I want you gone" tone.
"I don't remember fighting you nor dying." TT!Kathy said honestly.
"Seriously!?" the odd skeleton raises his voice.
"Human?" KT!Papyrus's small voice catches TT!Kathy's attention.
"I don't even remember saving you two." TT!Kathy looks back. It scares her. She turns back to the matter at hand.
"E- ENOUGH!" the odd skeleton yells at the top of his voice.
Silence.
"This is your last chance. Leave." KT!Gaster said in his royal tone. The king is in a fighting stance.
KT!Natalia did the same.
"Protect them." KT!Natalia tells TT!Kathy.
She knows that asking a stranger to protect the royal princes again may be too much. TT!Kathy nods.
"Let's get out of here." TT!Kathy tells the princes.
She pushes the royal princes to another room.
(Megalovania [ErrorTale ver.] plays)
"I am warning you." KT!Gaster's four eyes begins to glow.
"The name's Error... And this AU is an a-abomination! I shall e-erase it once I get the t-thorn." Error!Sans said as he gets in a fighting stance.
"You will not erase this AU." KT!Natalia said in a determined tone.
She charges towards Error!Sans not landing her first attack.
"Too s-slow." Error!Sans smiled wickedly.
He summons his strings. Error!Sans manages to capture KT!Natalia's SOUL. An unholy ROAR came from the king. KT!Gaster sprouts his dragon wings with glowing purple flaps. The king rushes at Error!Sans with extraordinary speed. Error!Sans dodges the enraged KT!Gaster, but his strings are cut by the King's tail.
"I-Impossible!" Error!Sans said as rage built up.
"Thank you, my King. But, you must leave." KT!Natalia said as she rushes at Error!Sans once more.
Error!Sans dodges her attack.
"I am your King. I shall fight with you." KT!Gaster said stubbornly.
Error!Sans lets out a wave of strings. The royal duo do not get strung up this time.
"Stand s-still." Error!Sans said bitterly.
(Song stops)
Meanwhile, TT!Kathy lead the royal princes to safety.
"Do you even know where we are going?" KT!Sans asks as he slows down.
"No." TT!Kathy said ashamed of her response.
The trio all together stop running. They take the time to catch their breath.
"Don't be sad TT!Kathy! You are new to this AU." KT!Papyrus said with a big smile.
His positivity radiates.
"We should head back and help out Dadster and Natalia." KT!Sans said as he made a fist.
"But KT!Natalia told me to protect you two." TT!Kathy said as she stands her ground.
"They could get hurt though." KT!Papyrus agrees with his bother.
TT!Kathy can sense that they are worried.
"How about this? I'll go help them and you two keep each other safe." TT!Kathy said after some quick thinking.
"Well... you did save us. Human! Be careful." KT!Papyrus encourages her.
"Yeah. Kick his butt." KT!Sans said with a determined yet sadden look.
He wanted to help his father and KT!Natalia.
"Alright. I know you guys must be strong if you two brought me here after I saved you. I know that one day you'll be as strong as you father if not then stronger. I believe in you two." TT!Kathy said as fire courses through her body.
She then runs back to where KT!Natalia and KT!Gaster are fighting. She is not sure why she told motivating words to the royal princes. Maybe it is because they reminded her of Carter. TT!Kathy glances back one last time. The princes look a bit shocked from her positivity.
(Song resumes)
"NAAAAAAAAAAH!" Error!Sans rages.
KT!Gaster watches as KT!Natalia gets severely injured. He is unable to protect her in time.
"Nat!" KT!Gaster rushes towards her.
Scooping KT!Natalia up in his arms, she weakly opens her eyes.
"Sorry. I wan't strong enough." KT!Natalia said in pain. She coughs out blood.
"Stay with me. That is an order." KT!Gaster said as tears form in his eyes.
"Aww. This i-is making m-me sick to my stomach." Error!Sans said in a harsh tone.
"I don't think I can." KT!Natalia said as she winced in pain.
"I need you my friend." KT!Gaster said weakly.
Just as all hope seem lost, TT!Kathy rushes in and did an incredible reckless action. She launches Eevee's Hidden Power towards the glitchy-looking skeleton. Error!Sans fails to notice the attack. The attack creates a large puff of smoke.
"Are you two alright?" TT!Kathy asks them.
She catches up to them. She notices the very injured KT!Natalia.
"I thought you were supposed to protect my boys." KT!Gaster let out a low growl.
TT!Kathy did not seem fazed by it this time around.
"Now is not the time to bicker. I need you to get her out of here." TT!Kathy stated as she handed KT!Gaster a s'more.
TT!Kathy did not question why she has a s'more in her Items.
"This will heal her, but it won't be enough." TT!Kathy sounds like a soldier.
KT!Gaster looks at the human. He knows that she is right.
"Once she is out of the way, I shall assist you." KT!Gaster said as he grabs the s'more. He then feeds it to his guard.
A wave of strings suddenly went to TT!Kathy's direction. TT!Kathy dodges the attack and the red SOUL appears. That is when only half of the SOUL showed up.
"How d-are you attack me with that move!" Error!Sans said enraged.
He too sees "TT!Kathy's" odd SOUL.
"Hey Thorn! Why do you only have half a SOUL?" Error!Sans asks for he is curious.
At the corner of TT!Kathy's eyes, she spots the royal duo leave.
"My name is not Thorn you weirdo!" TT!Kathy choose to Fight.
She launched another hoard of Hidden Power. TT!Kathy wants to see how nimble this skeleton is. Error!Sans teleports out of the way. TT!Kathy watchs him carefully. Despite having half a SOUL, TT!Kathy's HP is still the same. Wait.
Since when is she a Level 68? Did she level up and not notice? With a new health of 244/244, TT!Kathy changes from Eevee to Jolteon.
Error!Sans launchs his Gaster Blasters at her. TT!Kathy did her best to dodge all of the attacks. TT!Kathy wastes no more time. She is going to end the fight before KT!Gaster came back. TT!Kathy choose to Fight. TT!Kathy rushes towards Error!Sans with deception in mind. Error!Sans braces himself for her attack. TT!Kathy launches some some electric web and "missed" her attack. TT!Kathy smiles at this.
"Why you s-smiling? You missed." Error!Sans raises an eyebrow.
"I just used Thunder Wave on you. It should paralyze you." TT!Kathy said triumphantly.
Error!Sans suddenly feels paralyzed.
"I won't l-let you win T-Thorn." Error!Sans said as he weakly lets out another attack.
TT!Kathy dodges them with a lot of ease. Error!Sans looks terrible and flops forwards. The song and battle are over.
"Human." KT!Gaster's voice could be heard from behind TT!Kathy.
TT!Kathy froze in her spot. She slowly turns to see a creepy grinning KT!Gaster. TT!Kathy feels like her life is going to end.
"Human!" KT!Papyrus runs to TT!Kathy and hugs her.
KT!Sans runs up to her as well.
"No way! You beat him." KT!Sans sounds impressed.
"I'm sorry KT!Gaster - I mean King Gaster. I saw an opportunity and -" TT!Kathy tries to explain in a panic tone.
"It is alright. You did save my guard and I from this intruder." KT!Gaster said as he drops his smile.
"Heh... You're welcome." TT!Kathy said nervously.
KT!Natalia appears from behind the King.
"Is he alive?" she asks in a hushed voice.
"Yes. He is just paralyzed." TT!Kathy quickly responds.
"TT!Kathy a guest dropped this off." KT!Sans hands TT!Kathy a berry, an AU portal device, and a note.
"There were also some candies and a single s'more with that." KT!Papyrus responds as he lets go of TT!Kathy.
TT!Kathy takes the note off of KT!Sans.
"Dear Kathy,
If you are reading this, then it must mean that you are awake. I wish I could be there, but something terrible is coming. I must be in TemTale to prevent some dark clouds from getting closer. Any way, here are some useful items to help you on your journey. - Nick
P.S - Two skeletons are after you. Their names are Ink and Error. I think they are alternative versions of Sans? Not sure."
TT!Kathy finish reading the note in her head. It did not answer how she got separated from TT!Nick and TT!Mettaton.
"Is everything alright?" KT!Papyrus asks as his eyes radiated with concern.
"Huh? Oh. My friend just sent me some items for my journey. I better get going. I think my AU may be in trouble." TT!Kathy snaps out of her thoughts.
She quickly places the stuff KT!Sans handed her to Items. TT!Kathy then goes over to Error!Sans.
"Do you need assistance?" KT!Gaster asks in a royal tone.
"No. I think it is best that no AUs are involved." TT!Kathy gives them an automatic answer.
Déjà vu fills TT!Kathy's head. TT!Kathy picks up Error!Sans as if he is a sack of potato.
"Ugh..." Error!Sans grunts at being picked up.
"Sorry I couldn't say longer." TT!Kathy forces a smile.
"Come back soon." KT!Sans said sadly.
"We will make more exquisite food together." KT!Papyrus said cheerfully.
"Good-bye." KT!Natalia said.
She noticed TT!Kathy's shift of tone, but decides not to point it out. KT!Gaster merely waves.
And so TT!Kathy and a paralyzed Error!Sans go to another AU.