(Prologue)

On a large dark oak wooden desk laid a thick black leather book with a crest of two custom revolvers criss crossing one another forming an x. The cover flips open and on the first page of the book was a letter to whomever began to read this book. The letter said: "To Whomever, opens this book heed, no this is no fucking fairy tale or legend. I am here to tell you the story of a man who truly slain a god. And his story is far from over. He is the God Slayer, the Demon King and a Supreme Being. The man was once a human who unknowingly crafted his own 0ath and means to slay the false divine who had the power to be gods. Know this, this while detail all that has happened between him from the beginning of his adventure throughout his life. Be Warned this tale is not for the weak willed or idiots."

Yawning with sadness and exhaustion was a high school student of a young male. Back then he had many feminine features and was constantly picked on by all those around him that he was even sexually harassed till he hit his teens and became more like a male. His nickname was Frisk, but his birth name was Hajime Nagumo. Too few who knew about the ambassador between monster and humans only know he had very close ties with the monster royal family. The ambassador was a pure mystery outside of the governments as more and more non-threatening monsters came too light during the pandemic as half of humanity was globally whipped out. At first the blame was on monsters till the governments proved the pandemic originated in china after a meteorite struck a medical research facility and mutated a cure into the disease.

But with the aid of monsters Earth has been cured and wasting natural resources slowly began to die away. As magical energy began replacing energy issues fossil fuels died off as wind and solar became cheaper and radiation just vanished. But right now the ambassador was running for his life. Why may you ask? Well it is because of a giant beast chasing after him, the beast was called a behemoth. The behemoth was a beast of ten meters long with the shape of a triceratops, but more draconic with bullish horns and snout.

Haijime wore a blue leather jacket with fur lined the collar and sleeveless sleeves. Underneath was a sky blue tunic with dark brown trousers and boots. Frisk heard someone cry out: "RUN BOY! RUN! IT IS GONNA CATCH YA!"

Looking back he saw the beast was gaining closer. Even though Frisk wasn't built like the rest of the guys in his class he was physically fit. Making it halfway he heard a well-built man with short spiky brown hair and a short beard. He had a small scar on the left side of his chin and was garbed like a royal knight cry out: "NOW CHANT THE SPELL!"

Frisk looked behind and knew he wasn't going to make it. Flashing through his mind was the family and friends he made. And as the behemoth was very close he saw all of them together smiling with him happily. A tear was shed as he thought: 'I knew it… I knew I couldn't do it…' as he saw the spells charging he thought: 'Turns out I was no hero… I was no main character summoned to another world… I had been forced into this world and forced to follow all the crazy rules in order to survive and fake my beliefs about other races, the diseases and the stupidity humanity of this world has.'

His hand tightened into a fist and Frisk leapt forward before skidding to turn around and pulled out a dagger. As the beast was upon him with half his face to it and to his classmates or fellow party members he looked dead serious and he thought: 'Asariel… sorry buddy looks like I have to leave you and Chara. Papyrus I will miss us cooking together. Undyne, sorry I couldn't help you become stronger anymore. Alphys I will miss our discussions about anime and games. Mettaton I hope you keep on following your dream. MK you best keep on growing man.Toriel… no… mom, Asgore… no… dad I will miss you both. I was happy to have met loving parents. And Sans… my bro, my best friend… our time, our resets… I'll always regret my horrible wrongs… but you were my best friend, I'll miss ya man.'

Seeing a spell going haywire he jumped and stabbed the beast in the eye. A young woman garbed as a priestess with black hair and brown eyes cried out: "Nagumo-kun!"

Beside her was a good looking, with good looks, athletics, smarts, and a good personality. He has silky brown hair and gentle blue eyes. His body is toned and slender at about 180 centimeters. He was wielding a divine artifact sword and armour. This was the so-called "Hero" Kouki Amanogawa. Kouki was so assured that he himself was perfect despite having a kind heart he never wants to admit his wrongs.

Everyone watched as Frisk and the Behemoth crumbled down below with the bridge into the abyss below. The priestess girl, Kaori Shirasaki rushed to the broken bridge and reached out to him crying out his name while on her knees. Holding her close as she cried was a beautiful woman with waist-length black hair that is usually tied up in a ponytail with bangs hanging over her forehead and red eyes. This was Kaori's closest friend, Shizuku Yaegashi who wielded a scimitar. She was garbed similar to a kunoichi switching to the ways of the samurai. For Frisk… to sum it up, if this was a fucking video game then it would be set on Ultra Nightmare.

Where this all truly began backtrack to the very day when they all emerged into this very world. Weeks prior to the event of Frisk fall. Everything seemed normal in our world, but in the summoner world a church has begun to summon the class of future heroes. A Pope, the man is a man over 70 years old with many wrinkles and long white hair. If it were not for his wrinkled face, one could say it was over 50 years. His monk robes had purple accents and gold ornaments showing his statues symbol. Gathered around him were robbed individuals as he said: "We have bestowed upon you, The Oracle. Prepare thyself for the hero will soon appear."

Meanwhile in the modern world walking through the halls tiredly was Frisk. Sure many would call him a geek as he makes good grades and accels most of his classes except physical ones he makes a B on them. His family called him in the middle of the night calling to.check on him and telling him Asriel and Chara are getting married. He remembered how he and Chara always kept being called the wrong gender as she was more boyish and he was girlish, that was until they became teens. And now he was happy for them, it was hard crafting her a near perfect human body that was basically a bio-robot, but he was happy for her. Five years since he has been at the mountain, and now a much needed break was coming, he wanted to be at the wedding that was back in the Underground. But it was a monday, argueably the most pressing day of the week and Frisk agreed with Garfield, he fucking despised mondays.

Hajime aka Frisk groaned and said: "Fuck, I hate coming to this school."

Grabbing the sliding door he pulled it aside and he did not wanna deal with any issues that were about to come. Waiting for him while leaning forward was none other than Kaori. Kaori's three sizes are Bust 34, waist 26, hips 35, thanks to his time with Alphys he was intelligent enough to pull that off and see how people react thanks to Sans. He knew how she felt about him, and he honestly didn't know if he, himself felt the same for her. He knew she was a beaut, but he couldn't do anything thanks to the trio who always are hounding her and mainly him. She had always brightened his day with her smiles and she said: "You look exhausted and you were almost late today."

Yawning Frisk said: "Not really my fault, I got a call last night about my brother getting married this break, so I am planning to head home to Ebbot and jang with my family."

She pondered cutely and said: "Oh yeah, hou grew up there, is it true the world's top ambassador originated from there?"

Frisk chuckled, sure he accomplished much at ending monster and humanity feuds, but to be an ambassador like him is difficult. Frisk or as a few called him by his middle name Kris he was happy one of the schools two ladies was a true friend to him, other why he would despise everyone here like he used to for humanity. Soon Frisk heard the sound of the captain high and mighty say: "Kaori. Why do you even bother with him?"

Kaori tilted her head aside as Frisk said not only Kouki and Shizuku were here, but also the class's giant brute was as well, Ryutaro Sakagami. Ryutarou has a physique that is like a bear and he stands tall at about 190 cm. He has short trimmed hair and a gaze that appears both cheerful and stern. He has spiky ash black hair and green eyes. Frisk hated how short sighted they were, living through several lifetimes and seeing horrors and nightmares for days made him a realist. Ryutaro sighed and said, giving Frisk a one eye stare: "Forget him. There's no use in talking to a spineless coward."

Frisk's eye twitched violently, just because he was primarily a pacifist now do to causing mass genocide of monster and humans doesnt make him spineless. Captain high and mighty placed a hand on Frisk's shoulder and said: "Minagumo, when are you going to stop fawning over Kaori? She can't give you attention forever."

Frisk only yawned loudly and he said, quaking a brow and said: "Sorry… I just don't see the problem you have for me. It is like you have a Bone to pick with me and it piston me off."

Everyone looked at him wondering why he did puns and Frisk yawned again and said: "And besides who's to say it's the other way around. You need to get a reality check not everything is a fairy tale."

Kaori's face turned scarlet red as she held her cheeks and everyone gaped seeing this. Frisk took his seat and pulled out a fur lined hoodie and pulled the hood up and kicked back and started to snooze. It was no secret that Hajime had already got his decree, but he rejoined the school system to primarily be around people his own age. But now all eyes were on Kaori who was in her seat blushing up a storm as she had been found out and everyone could only gape. No one noticed a glowing red eye underneath the hood and his one sided smirk.

But soon in walked a petite woman often described as having a childlike figure by her students. She has dark brown hair and hazel eyes wearing a pink sweater vest over a white button up dress shirt and a yellow bow tie ribbon as her bust was a 79, waist 65 and hips a 87cms. Stretching Frisk looked up and noticed she wore white pantyhose, despite her childlike demeanor most of the guys in his class wanted to bang her. Honestly he didn't care, he wished something exciting would happen, he missed the adventure. Unintentionally he got his wish, back on Ebbot Alphys equipment was going haywire with high magical readings she rushed to her computer and began typing away and her eyes widened in horror at huge amount of reading, ripping the paper she ran out seeing it came from Frisk's location. Meanwhile Frisk saw a magic circle surround the entire classroom as an entire barrier boxed them in and his eyes widened seeing the runes on and thought: "Oh fuck me!'

In a bright pillar of light the classroom was gone from the world and the beam traveled to the stars. Word would spread all around the world and with the findings about magic it will come to light that they were not the only place of existence with magic. Back to Ebbot Alphys had gathered everyone and they discussed the readings and the news broadcast, Toriel fainted and Asgore caught her and asked: "Is our son alive?"

Alphys nodded and said: "Yes, it seems that it was portal/summoning magic that took them, if my readings are correct Frisk and his classmates are alright as far as we know."

Asriel frowned and said: "So we may never truly know about Frisk."

Alphys shook her head. Meanwhile a girl and a green and yellow striped sweater dress held her tiny bulging stomach and began to cry weakly as her and Asriel's child may never meet the person who made everything possible.

Chapter One - A New World

Groaning in annoyance as Frisk rubbed the bridge of his nose with two fingers he felt very annoyed by the bright flash and said: "Ungh… what the bloody hell… happened."

Taking a look around he found himself and his class in a large room as they stood on a stone pedestal with a darkened version of the summoning circle on the floor that brought them all here. Frisk sensed powerful magic radiating around him so he became on guard. As his classmates began to panic like a bunch of headless chickens Mr. High and mighty called out: "Guys calm down and make sure that everyone is unharmed…" Frisk scoffed and he noticed Kaori clutching his sleeve.

No longer balling up his fist he grabbed her trembling hand and gave it a reassuring squeeze. She smiled and squeezed back happily knowing that he did it. Soon they all heard an elderly kind voice that said: "O' chosen heroes, welcome to Tortus. I have been awaiting your arrival. I assure you I am not an enemy for I am the Pope of this church for the Saints, Ishtar Lombard. Now then I believe preparations are done, would you please follow me."

Everyone wouldn't start moving, but Frisk began to walk with his hands in his pocket not carrying as Kaori began to follow him. Minutes later they entered a council like chamber and took a seat. Maids entered the chamber and prepared goblets of tea. Ishtar smiled and said: "Please, enjoy the drink we've Provided. It might help ease the confusion I am sure you are all feeling… well all except you young man."

All eyes landed on Frisk as he acted like a nobleman while sipping the beverage surprising everyone as he wore a monocle and acted like a nobleman. Everyone of his classmates all thought: 'WHERE THE HELL THE MONOCLE CAME FROM!'

But what even shocked them as he began to speak like a nobleman: "Quiet delectable, I taste the tea has been aged to 0erfection complement with sugar, cinnamon, oh I taste a pinch of blueberry and is that vanilla?"

Everyone gaped as the maids looked surprised as one said: "How did you…?"

Frisk replied and said: "My dear, I had been adopted by a high class family and thus I know how to act and taste things beyond others."

Most of his classmates gained tick marks as he was calling few of them low class. Ishtar coughed into his hand and said: "I will begin to explain everything. So please, lend me your ears until the very end."

Ishtar became dead serious and Frisk felt this man was hiding something as he said: "This one of the few parallel worlds to your own, our world is one called Tortus. It is our own and we who worship our one God, Eiht-sama, who summoned you all here to our world. Compared to our world, your world is superior in technology. But deep down every human in your world has powers that far surpass any of our worlds humans… Well that is all according to our Oracle who Ehit-sama conveyed his message to."

Frisk kept hearing his classmates begin thinking that this was all a reality prank television show. But he knew that was a load of crap, despite monsters becoming believable his classmates were still short sighted. Pondering on what he had heard, Frisk began to figure out Eiht was the only one capable of sending him home, but they must be more to what is going on here. Soon Ishgar began to speak once more: "Since long ago, a time nearly forgotten, we have been at war with the demons who rule the southern regions of our world. But lately, strange things have begun to happen, and now our very own humanity is on the verge of ruin. But in order to save us from such horrible fate, Eiht-sama has brought you our savior's to our world."

Frisk looked around and saw hardly anyone was believing anything, but he knew better more was happening than meets the eye. His left eye flashed with his eye color turning red and the white going black and it landed on a nun who was hidden in the shadows with its L.O.V.E. or Lv being a level eighty-seven. Clenching his fist underneath the table he was snapped out of it as Aiko, their teacher shouted out: "WHAT ARE YOU SAYING! THIS HAS TO BE SOME HORRIBLE JOKE! HAVE YOU EVER GOTTEN PERMISSION TO EVEN DO THIS! IF NOT I WILL SUE YOU FOR KIDNAPPING US!"

Frisk groaned in annoyance till he looked and saw two girls, one who has short black hair that is kept in a tiny bob. She has brown eyes and is usually seen wearing glasses. This was Eri Nakamura, and beside her was another girl, a very short girl with short hair styled into twin-tails that reaches her shoulders and has light brown eyes. This was Rin Taniguchi, Eri's best-friend. But Frisk saw Eri's true self and how she was a yandere for Golden boy himself. He could tell if Golden boy didn't get a reality check then she would endanger everyone here. Hearing the two best friends agree with the teacher he bang his fist tired of hearing childisj bicker and said with a cold hollow voice that frightened everyone as he said: "List, check hour fucking phones and see that he says is true. Unlike you morons who refused to get the magic cells back home…" pulling out his phone it showed a 3-D holomap of the church and the mountain area shocking everyone of his classmates.

Ishtar smiled and said: "Seems like someone has very good skills at seeing many things. But I see it in your eyes, my child… you have seen much hell that no human should ever see."

Frisk fisg clenched, back then it was all children before him that truly drove him to genocide everything. Soon enough the boy scout himself said: "Ishtar-san, can I ask you something?"

Ishtar stroked his beard and looked at him and replied: "Yes, of course."

Kouki then asked: "You said that humans are at war with monsters… are there any other races besides humans and demons."

Quirked a brow and said: "Most likely, according to my phone this world is so full of magic it's an almost unlimited resource in itself. But like magic itself, it self replenishes over time."

Ishatar nodded and said: "You both are correct."

Ishtar explained how there was a third race, a race of demi-humans who are humanoid but are beastly and not human and Eiht said they were nothing more than wild beasts and that the war has been going on for years and that Demons have gained the power to control monsters. But once Ishtar took us outside all doubts were ended till someone asked if they could send us back till Frisk said: "If they could they would not have summoned us, my guess is that they're god can do it. So the way I see it, either we die out in the wilderness or ride with them in this war."

The big four looked at him as he had pulled out a combat survival knife and began doing spins and professional movements for it surprising everyone. Frisk knew this world has a large shadow that hid a massive secret and in order to survive he had to play as a monster hater that made him want to vomit as he always agreed with it. But for now, he had to play along till the time was right then he would take action. Seeing Kaori with Shizuku talking about this ordeal he nodded to her causing her to smile. Time would tell as the future was uncertain as only they could forge their own path and no one else. Frisk knew his family was in an uproar with his disappearance and knew Sans was working himself to the bone to find them and that brought a smile to his face.

[OVA 1]

Closing the book was the player as he smirked as pages have yet to be written and he looked into the screen with a fanged grin before picking up the book and walking out of the library as he sees Alphys and Sans rush to the lab. Smirking he bumps into them causing a crash and vanishes, slipping the book into Sans bag knowing the skeleton would see it. Sitting on a cloud the player turned to a figure shattered in a tattered cloak made of darkness and he said: "We both know how it goes. So why did you want me to hand it to them."

Chuckling the being aka the Author turned and said: "We both are omni beings, sure we are not deities, but we create things. Your forge paths, I forge the story. Now Frisk/Kris' story must be known to them?"

The player raised a brow and asked: "Why?"

The author chuckled and said: "Oh, wait till they learn of Frisk gaining a harem without intention. Toriel did say she has wanted Grandbabies since they were sixteen."

As the player chuckled he asked: "About the Isekai Quartet?"

No voice was said as a plane passed them by till the Author turned and began walking up to space saying: "Wait till the bunny, vamp, dragon and his daughter join. Then we can discuss that. I may have him fight the four of them or even the others to show them his might."

Shaking his head the Player saw the author vanished and soon enough the player heard Toriel shout out: "WHAT?!"

The player laughed his ass off and decided to continue watching them knowing things will only get interesting. Everyone had remained at Toriel's house and were around the book itself discussing it. Asgore asked Alphys: "And you sure this is real?"

Nodding her head and said: "Yes, the school camera footage lined up with a few things. This book may be the key factor in finding Frisk."

Undyne crossed her arms and said: "Well then what are we waiting for, the sooner the better."

Papyrus nodded and said: "I for one the great Papyrus shall read the first Chapter. But Sans you said it mentioned about his first route correct?"

Sans nodded and clenched his fist as everyone shivered, remembered how Frisk was plagued for months of those memories till he told them. Chara even said that the other children were mentally tormenting him and that when it was all over he had the will just to reset it and free him and her from the others. Papyrus opened the book and began to read and the Player knew they would not like the story or the deeds that he would committee.

Hey everyone, as too anyone couldn't tell it is the player aka, you who are all telling this story in a way. Anyway the harem will primarily be the same to an extent. As for the after story. Since I hadn't heard anything about that, I will have to do something about it. And does anyone want me to do an Isekai Quartet OVA chapters or as a separate story as he is in Ainz classroom. I may do stories where frisk takes over their lives except tanya… cause I found that highly disturbing. Now then, do I add the powers of his monster allies from the other… hell ya, but only the Skele bros.