The Demon King's Savior (A Haikyuu Au)

Prologue

Hinata 3rd Person POV
"Hinata... wake up.... wake up!" The orange haired boy shot awake, expecting to be in his bedroom only to notice he had been sleeping on the ground. The surrounding area was dark and cold, the confused boy stood up slowly. -Where the hell am I?- His train of thought stopped as he noticed a sword on the ground. -A sword? Might as well take it.- Hinata reached to grab the sword before a light shot out from it. "Hinata Shoyo, take this holy weapon and capture the heart of the demon king." Echoed a strange voice. The light was gone as soon as it had appeared. This left him quite confused and startled. -Did that sword just talk?!- He thought with a scared expression. He placed the strange blade into a sheath he had discovered on his back. "This is so weird..." he whispered. -The only way to go is forward. Maybe if I complete this 'quest' I can get back home. Hah this is kinda like a video game- Hinata snickered to himself. The curious yet scared boy continued forward until he reached the end of the cave. The cave opened to a high ledge. Beyond it laid pools of lava, raging fires, and a black intimidating castle.

"GAH" Hinata yelled. -Crap did I just scream out loud? What if there's something dangerous here?- He quickly dived and hid behind a nearby rock. A strange creature walked by. He had a pair of horns and a tail. -Eek! That talking sword was right there are demons here!- The poor boy covered his mouth as he hid behind the rock. The demon had black turnip looking hair. "Turnip...." Hinata said unconsciously. "Who's there? I know you are hiding." The turnip demon declared. "Eek!" Hinata slapped his hands over his mouth once again. The demon sighed before retreating toward the castle. -Hopefully he thought it was nothing...-

Kageyama 3rd Person POV

Kageyama sighed as he sat on his throne. Who knew hell could be so boring. Kageyama's boredom was disrupted by his servant, Kindaichi, who had ran into his room. "My king, there is an intruder in the sector of Ka. I smelled a human by the Killer's Cave." Kageyama was intrigued by this, -a human in hell how interesting.- "Kindaichi bring it to me." Kageyama could almost hear the excitement of his underlings. "Alive." A collective 'aw' echoed through the castle.

Hinata 3rd Person POV

Once the demon was gone Hinata began to climb down the ledge. -If this is like a video game then I'm going to have to level up before I can take on the boss.- He unsheathed his sword and examined it. The sharp blade had a golden handle decorated with different gems. He swung the sword curiously, a large blast rang out after he slammed the blade into the ground. His small stature was blown back by the blast. "Woah..." Hinata learned new tricks with the strange sword until he was too tired to move. He crawled his way back into the cave he arrived in. He thought nothing of the turnip demon as he drifted into a peaceful slumber.

Kindaichi 3rd Person POV

-Kageyama is a slave driver..- Kindaichi sighed as he scanned the area. He had spent the last hour trying to find the shrimpy human. He was about to turn back to the castle when a flash of light was seen in the distance. "That power... a holy weapon?" Kindaichi set out towards the direction of the blast. -Could that really be the human's doing?-

Daichi 3rd Person POV

Daichi opened his tired eyes to awake to the sight of iron bars. -Where am I? Did I get put in jail after falling asleep?!- Daichi was about to call out for some sort of explanation, but he was stopped by a talking book. "Shhh! If the guards hear you are dead meat!" The strange brown book floated between the bars and dropped in front of Daichi. The cover bore a bright blinking green eye, Daichi had no clue how it was talking. "Now listen closely I'll explain all of this after we get out of here." The book flipped open to a glowing page with foreign writing. "Place your hand on the page and repeat after me, lanuae Magicae." Daichi placed his hand on the page and recited the incantation. Suddenly Daichi was in a whole different place. The surrounding area was rocky and had a slight red tint, the atmosphere was hot and humid. Daichi stood up and grabbed the book. "What in the world is going on? How can you talk? And how did we get here?" Daichi asked the book with a hint of anger. "Sorry! Sorry! I'll explain. Welcome to hell, your mission is to capture the heart of the demon king. I'm your holy weapon that will aid you on your journey! The name's Liber." Daichi fell silent for a moment as he tried to decipher the book's words. "So if I defeat this 'demon king' I'll be able to return home?" The book flapped around happily, "Yup!" -This is so weird....-