(Author's Note: Again this is my first story so sorry if there is any long or short chapters and plot holes. Undertale belongs to Toby Fox and Haikyuu belongs to Haruichi Furudate. Please enjoy and give me any suggestions. Ok sorry for the long note.)

(Third person)

They stood in the front of a shadowed figure, knife in hand and a heart shaped locket around their neck. This was their chance to escape the Player and Her. All they have to do is get past this last obstacle. To get past... Him. "So...you have been busy?" The figure asked. They shuffled uncomfortably, they couldn't bear that feeling. "It's awfully quiet around here. No cheerful noises, it's just dead silence... it's almost "Bone-Chilling" don't you think pal?" The figure asked. Really, a pun at this moment, they thought. They must really want this to get over with, the figure thought to himself. "Anyway, let's get on with what you came for. It's a beautiful day outside, birds are singing, flowers are blooming. On days like these, kids like you... SHOULD BE BURNING IN HELL."

(Just imagine the Sans fight. It ends the same way too.)

"Ngh... you really beat me huh," Sans said, clutching his side where the blow hit him. They just stood there, not even looking at him. "I guess this... *cough* really the end... you little dirty brother killer *cough*" Sans shivered for he felt like his soul was cracking in two. "Well... I'm going to... Grillby's... P-papyrus... do you need anything?" Sans asked as he walked away slowly. They heard that sound. The sound a monster soul makes when the monster dies. They moved on, not even looking at the dust behind them. They went ahead and killed the king of the monsters and that flower from the beginning.

"Very good, partner. Now if you wanna escape from their clutches, give me your soul," a child with a green sweater said, holding out her hand. They seem hesitant at first but they held out their soul. The child smiled. Finally, we'll all be free, she thought. Suddenly there was the option button. "Huh?" The child asked. There were two options, [True Reset] and [Rewrite]. What's this? I have never seen an option like this before, the child thought. "Wait Frisk, don't touch i-!" She cried out but they have already pressed the [Rewrite] button. In a flash, both children were being swept away, breaking down code by code. "Frisk you!" She tried to yell but her voice was no longer making a sound at all. What's going on, she thought. After what felt like hours, the child landed on her feet gracefully. "Where are we?" She asked but no answer. Then she heard sniffling sounds coming from behind her. She turned around to see the other child, crying. "Frisk!" She ran towards them. "I'm sorry *sniff* Chara, i didn't know what came over me," Frisk sobbed. Chara patted their back. "It's alright, we just need to find a way out of here," she explained. "I am afraid not, my dear children," a voice spoke from the darkness. "Who are you?" Chara asked. "Nobody important...at least for now," the voice replied. Chara made a fist. "What do you want from us?" She asked. "Well I wanted to play a little game. I want you to be spectators for our new protagonist or should I say protagonists," the voice explained.

"What?! What do you mean game and protagonists?" Chara asked, her voice on edge. "You'll see," the voice said. "Hey, answer my question!" Demanded Chara but no reply. "Dam it, now what?" "Umm Chara, you might want to look at this," Frisk said. Chara walked over to where Frisk was pointing and saw a very odd sight. There were two boys in school uniforms. One was a tall black haired boy, another small with orange hair. They seem to be playing some sort of game or at least practicing one. "Who are they?" Frisk asked. "I dunno but whoever they are, they are in danger," Chara explained. "Well what can we do?" Frisk asked again. Chara thought about it. If we interfere who knows what that...THING will do to those boys, she thought. Frisk was waiting for an answer. "At the moment, nothing. We just have to sit back and watch as that voice told us," Chara sighed. "But..." "Listen Frisk, if we interfere, those boys will be in even more danger than they already are. We just need to wait until we can do something," Chara explained. Frisk went silent for a moment before saying, "Alright." Chara looked at them before turning back to the sight of the two boys. The taller one seems to be scolding the little one. I pray for you two, she thought.

(Holy potato! This first part is done. Yeah I'm kind of aware that the Sans dialogue here isn't the same one in Undertale but cut me some slack. I only watched other people play it. Never myself have I played it before. Also if I get anything wrong from both the game and anime, feel free to correct me in a nice way. Chapters will be coming out randomly so no schedule sorry. Anyway I hope you enjoy this. I'll see you guys in the next one. Have a nice day -Flare)

This was edited on November 16 2020