Bullies are going to have a bad time...

Summary: (oneshot) Frisk comes home from school one day with a black eye. She won't tell anyone what happen either. Sans gets suspicious and follows her to school, not liking what he sees when he does.

(WARNING: bullying)

Frisk snuck inside the large house her and her monster friends lived in. It had been a year since the monsters left the underground. Toriel had adopted the girl, raising her like she was her own. Flowery also lived with them, living in a small pot in Frisk's room upstairs, where she was trying to go without letting anyone know.

Quietly, the thirteen year old girl snuck up the stairs, eyeing the sleeping form of Sans on the couch below her. Though because of her not paying attention, she ran into Toriel at the top, the one she didn't want to run into the most.

Frisk stumbled back in surprise and almost tripped, but stopped herself. Toriel smiled at her until she saw Frisk's eye, which was swollen and a dark black. "Child, What happened to your eye?!"

This cause Sans to wake up and everyone else to come see what was happening. Frisk knew she couldn't let them know what happened. "I uh... wasn't paying attention today and someone accidentally hit me with a baseball. I'm fine though." She said nervously, silently cursing herself for letting her voice betray her.

Toriel raised an eyebrow. "Alright child. Alphy, do you have anything to help with the swelling?" She asked the yellow dinosaur behind her, who nodded.

"Yes it's in my lab. Let me go get it." She said before running downstairs towards the basement, which was now her lab. Undyne followed her girlfriend, wanting to help find whatever it was Alphy was trying to find.

Papyrus frowned slightly. "I, THE GREAT PAPYRUS, SHALL MAKE SOME OF MY FAMOUS SPAGHETTI TO MAKE YOU FEEL BETTER HUMAN!" He yelled before rushing to the kitchen. Mettaton wasn't there luckily, since he was working at that time. Neither was Asgore, who had been called earlier to handle some relation problems between the two races. Frisk hadn't gone since she was in school.

"Go rest in your room child. Call if you need anything ok?" Toriel told her, who nodded.

"Ok Momma. I have to do homework anyways." She said before going to her room. When she got there, Flowery eye'd her suspiciously.

"Say Kid, what happen to your eye?" He asked as Frisk closed the door. She looked at the follow before grabbing a cup off her desk and taking it into her bathroom and filling it up.

She walked back into the room and poured the water into the dirt for the flower. "Promise to tell the others? We don't need another war to happen from them getting overprotective." She asked Flowery, who raised an eyebrow. Was it that bad?

"Whatever kid. Not like they ever talk to me anyways." He told her, who smiled back.

"For the last two months... These kids at school have been bullying me. They pick on me for being friends with you guys. They also hurt me a lot but I can usually hide the bruises and stuff. Today one of them got a lucky hit in when I dodged a hit in the face and he gave me a black eye." She told the flower, who was shock.

"I see why you don't want to tell them. The short skeleton would kill those kids." Flowery remarked and Frisk nodded.

"So no matter what, please don't tell them. If it keeps up I'll fight back, even though I don't want to." She said and went to her dresser. She pulled out a pair of pajamas before heading into her bathroom to take a quick shower before dinner.

_time skip_

Sans watched the kid as she walked out of the school building. He knew she had been lying yesterday about that black eye being an accident. He could hear it in her voice and see it in her eyes. The girl was his best friend, other than his brother, and he could easily tell this stuff. Today he had decided to follow the kid around, wanting to find out the truth.

Her black eye gone because of some medicine Alphy had given her yesterday. The girl had seemed relieved but slightly scared about seeing it gone this morning.

Sans watched as a group of kids, three guys, walked up to Frisk. She shrunk back slightly as they approached her.

The leader smirked at her and leaned towards the girl's face. "Lookie here, it seems the monster lover got rid of our little present we gave her. Why don't we leave a few more this time boys?" He asked his group, who both grinned menacingly and nodded.

Frisk tightened her hold on her backpack as she was pushed onto the floor and was repeatedly kicked in the stomach. "S-stop p-please." She whimpered as they continued to kick her.

Sans decided he had enough and was filled with anger. His eye began to glow a bright blue as he teleported behind one of them and tapped their shoulder. They turned to him as he hands started to glow as well.

"You guys wanna have a bad time?" He asked them, grinning menacing at the three. They felt shivers go down their spines as Sans used his magic to throw them around.

Frisk slowly stood up and put a hand on Sans' shoulder. "S-stop please Sans. T-they're not worth it and I d-don't want you to get in trouble for killing them." She told him weakly. Suddenly, Frisk's legs gave out and Sans caught her, dropping the bully's in the process.

He glared at the three. "Ever come near her again and I will kill you next time." He threatened, making the three nod and run off. Sans picked up Frisk and started walking home. She cuddled into his chest and sighed contently.

"Thank you for helping me Sans." She said. He looked at the small child in his arms and nodded.

"It's fine kid. I couldn't let our favorite human get hurt after all. When we get back though, you will tell everyone, EVERYTHING, you hear me?" He told her, making Frisk nod. He grinned and kissed her forehead.

"I would be so bonely without you Sans. Thanks." She told him, making the skeleton laugh. The rest of the walk home was in silence.

Pika: did you guys enjoy it? I thought that little bonding scene at the end was cute. I hope you guys enjoyed! I come up with another oneshot soon!