originally on Deviant art,

Undertale: A Fathers Determination.

part one.

Frisk: child (in rp she was identified as a she so that's what's going on here) 6-8 years old.

Papyrus: * uncle!

Sans: * the adoptive father of Frisk. All legal.

No sans is not with Tori, there are reasons. reasons like she is back with asgore. they made nice in my world.

Shell Valiant: Nurse at Frisk's school. Protective as heck over Frisk while she is at school.

Loraine Garrets: Vice principle at Frisks school. Totally the bad guy

Dorian spencer: Principle. Currently not at the school because of family troubles. So has no idea the VP has turned his school into a nightmare.

And also other Undertale crew will be there.
This is true pacifist route time line.

A Fan fic based on an omegle Rp I had.

Warning Sans will have little chill.

Rated T for some language and scaring the shite out of bullies!
I don't own undertale, undertale belongs to Toby Fox.

Part one~

When Frisk came home today crying, I grew worried and got up from my place on the couch and walked over to her and knelt to be eye level. * Hey frisk what's wrong?*
She sniffled and hugged me tightly "I Drew a picture today and these…these kids…s…said that…that. Monsters can't be my family…and they..." she pulled out a torn picture that was helped together by tape.

I felt furious but kept it cool. * Hey why don't you go upstairs and get cleaned up. Papyrus is making spaghetti for dinner.*

"Ok Papa Sans oh hey…I heard a funny joke today want to hear it?" She dried her tears looking up at me with a smile.

*ok Frisk, go for It.* I said smiling.

"What kind of shoes does a Froggitt wears?" She asked looking adorable.
*I don't know what?*

"Open toad!" she chirped. I sneaked and began laughing.

*that was good kiddo, who told you that?"

"The School nurse! She is really nice." She said before running up the stairs to her room.
Once she was in her room I walked into the kitchen to talk to papyrus.

"WHY BROTHER YOU LOOK UPSET WHATEVER IS WRONG?" He asked seeing me with a frown.
I punched the table eyes closed. "Frisk is being bullied at school. These little...how can the school just let this happened."

My brother studied me and said in a serious and quite tone "Sans, what are you doing?"
I looked up at him and glared at the floor * I am going to talk to them. Harshly.*

My brother grew worried "you don't know who they are…"

*I will find them. Don't worry.* I stated going to a coat rack to grab my jacket as Pap's followed me.

"Brother….Frisk has told me that she often talks to the school nurse. Perhaps you could get information out of her?" My brother offered, knowing I was not about to back down. Not when my daughter was involved. These little brats were about to get dunked on.

~in the school (reason principle hasn't been contacted is family issue is a funeral and rp is a crazy who threatened the jobs of everyone if they tried to call him) normal pov ~

A young blond nurse with purple bangs and tips, green eyes dressed in Disney princess print scrubs was busy cleaning up her office fuming to herself.

"HOW can they NOT DO SOMETHING? This is the fifth time Frisk has come into my office this week alone. And it's only Tuesday! "She slammed the clipboard she held down and in a mock tone of someone else 'I'm sorry but we can't do anything, the students in questions parents donate to the school' this is total Hor-Heeeellllooo" she saw sans standing in the door ready to knock.

*Heh, sorry, I am Frisk's legal guardian and I heard from her she was being bullied.* He walked into the office shutting the door behind himself.

The nurse's frown flipped into a smile as she walked over and offered her hand "then you must be 'Papa sans' Frisk has told me a lot about her Dad, I'm Shell Valiant. It's great to meet you, and yeah, the kids WO are bullying her are the Anderson twins, they are girls, petty, catty, and dress like brat's dolls. The other kids that bully are the Erik's boys, they are 12 and 13 respectively. Both big and none too bright and should be in middle school NOT Elementary."

Sans took her hand and shook it sensing the rage in her. * Where do these brats hang out?*
"The playground on campus on the other side of the school. There is a blind spot to the south furthest corner. It's were they bully the kids. Smack em twice for me."

*Heh, will do, and hey, love the joke you told Frisk today. It was great. heally had me Hopping with laughs*

Shell blinked and face palmed "oh god, really? That Froggit one?…it's one of my worst…geez kid…well am glad you liked it."

* Welp time to go give those kids a Bad time.* sans walked out, and teleported to the playground in question, his left eye glowing. Using Shell's advice he walked up via the blind spot.

If they wanted to play the 'we did not see it so it did not happen' game. He was going to play.

*Hey Punks. Heard you were picking on my daughter Frisk today.*

The twins looked him over and said in unison "So you're the wusses dad? Figures a Werido would raise a wuss like Frisk!"

The two boys laughed and high fived the girls just before a blue glow enveloped them and lifted them high in the air then brought them down at stopping just before the ground.
*now listen here you brats. MESS WITH MY DAUGHTER AGAIN AND I WONT BE SO FORGIVING.*

"Y...You can't do this! Our…our parents will…" one of the boys stammered

Sans grinned darkly * will what kid? Who will believe you?* his eye glow got brighter. * You will keep yer mouths shut, you will not pick on Frisk OR anyone else. Am I clear? Because if I hear from My Frisk you are at it again you will have a very Bad Time.*
The four kids shook and ran as soon as he set them down and once they were gone he vanished, returning home just before Frisk came back down from her room.

*hey kiddo, get your homework done?* He said grinning

"Yep! Pasta time! "She cheered grabbing his hand and dragging him into the kitchen to a set table and a smiling Papyrus.

"LET US EAT NYEH HEH HEH" Papyrus cheered sitting down.
The trio enjoyed a happy dinner and watched some TV until Frisk began to fall asleep snuggled up next to her father.
Sans chuckled ruffling her hair * hey kiddo, looks like you are ready for a bed time.*

"Heheh." Frisk smiled and yawned as Papyrus groaned from the pun as sans scooped her up carrying Frisk up to her room.

She got ready on her own and he began reading her favorite book and tucked her in handing her a cute little temmie plush doll that squeaked out "HOI' when hugged.h *sweet dreams sweet pea.* he muttered to the sleeping child before kissing her forehead and going down stairs to watch a little more TV. He dozed off after a while falling into a nightmare.
Looming black figures were grabbing frisk away from him and dragging her away, she was crying and he was trying to get her back only to get stuck in a tar like goo and dragged down into the much.

*FRISK!* Sans sat up gripping his chest sweating. This was the first time a nightmare had plagued him since they came to the surface. *he…..heh…..just a dream….it's just a dream, that's never going to happen. I won't let it.*

~end part one~

If the Rper I met ever sees this. You are an awesome Sans! 3
Also this is my first Undertale fic. Please don't kill me.
*hides*