Disclaimer: I do not own Overlord and One Punch Man or anything that might get my ass sued. This is purely a fanfiction, and I get nothing from writing this except fun.

English is not my mother tongue and my writing sucks ding dong, so read at your own risk. Enjoy!

"Hail Ainz Ooal Gown" – Normal Speech

Hail Ainz Ooal Gown – Thought

"Hail Ainz Ooal Gown" – Flashback

Chapter 1

Shalltear was in big trouble.

Her mission given by the Supreme One, Ainz Ooal Gown, was to capture any human who could use martial arts which were of interests to her lord. She did not find any value in these weak pathetic humans even if this ability did not exist back in the Nine worlds where the Supreme Beings were from, but if the last Supreme Being and her target of affection wanted something, she would get it for him.

The original plan by Ainz-sama was to have Sebas and Solution act as baits by pretending to be a high-class noble to lure a group of bandits to attack them while they were on the road.

The plan worked flawlessly, as expected of the wisdom of the Supreme One. The foolish humans fell for the trap and attempted to attack the stagecoach whom Sebas and Solution were in with Shalltear and two of her vampire brides were accompanying.

The result was disappointing. The pathetic humans who attacked them were a bunch of weak former soldiers who turned into the life mercenary and part-time banditry. Fortunately, by using her [Charm] to interrogate some of the humans, she learned that there was a human among the group who could use martial arts comparable to the strongest warrior in the Kingdom, Gazeff Stronoff. Shalltear parted way with Sebas and Solution to track this human in a cave base of the mercenaries nearby.

His name was Brain Unglaus. He could use martial arts, and he could fight better than the weak humans she had encountered so far. However, he was still a weakling. She could block the fancy martial arts he displayed easily with her finger nail. Still, her job was to capture any human who could use martial arts for her lord.

However, she made a mistake and let the rat got away through a secret exit because she was messing around and feasting on the other bandits which made her [Blood Frenzy] passive to get the better of her. Her lord was going to grill her for this she thought. Moment later the vampire bride that she tasked with to watch out for anyone coming to the cave came to inform her that there were a group of adventures coming.

Unable to control her passive ability which made her slowly losing control over her mind, she quickly killed the group of adventurers leaving only one alive for dessert instead of capturing them to see if they could use any martial arts. However, the lone adventure threw a bottle of red liquid at her spilling out the content which caused her damage and returned her back to her sense.

After using [Charm] on the single surviving adventure, she learned that there was actually one more ranger adventure who was on the lookout for the group, and that he was already heading back to E-Rantel to inform the Adventurer Guild.

"…Lastly, don't create a commotion. If people learn of Nazarick's actions, it'll cause us trouble"

"Kuh!" Shalltear was in big trouble indeed.

She could not allow anyone who saw her to escape and report back to the humans about her which could potentially expose Nazarick.

Ainz-sama is going to kill me!

Eyes wide open, Shalltear charged up the sides of the lowlands, faster than the wind. She leapt over on top of a tall tree and looked around in the darkness of the night, but even her darkvision-capable eyes could not penetrate the depths of the forest, and though she listened carefully, she could only hear the wind blowing on the grass and trees.

Shalltear did not possess any detection abilities or divination magic. Under these circumstances, finding a single person in the entire forest would probably be impossible.

"Son of a bitch!" she cursed.

He had escaped; she had been too careless. Shalltear ground her teeth as she realized that she had let two of her prey slip away.

"Children!"

Several shadows wavered into existence near Shalltear's feet. The shapes of several wolves appeared, but unlike regular wolves, their fur was black as night, and their eyes radiated a malevolent crimson glow. They were vampire wolves summoned by one of her sill which were best suited to tracking and pursuit.

"Consume every human in that forest!"

After the command, the wolves spread out through the woods to look for the human.

"I let two humans escape! Ainz-sama will definitely scold me!"

Moments later, a bright blue light could be seen in the direction that her familiars were heading toward.

"They were defeated?" She received a feedback from her summons.

"Guh!" Shalltear growled in anger and reverted to her True Vampire form which significantly enhanced her physical attributes. Then she rushed toward where her familiars were killed at lightning speed. She burst out of the forest and fell from a short cliff landing gracefully.

There were twelve people before her. Each person was attired in equipment of quality that were greatly superior to any of the ones of the other humans she had encountered so far.

Shalltear considered the twelve men and women, but there was a man among them who she deemed to be considerably stronger than others. He had the androgynous features of a young man with long black hair and sharp red eyes with a black spear as his weapon.

That man… Is he strong?

She could roughly estimate him to be stronger than at least Solution.

Perhaps I could capture him and the rest of the group for Ainz-sama.

She smiled internally as she may have found something to lessen the punishment she would get from her beloved.

"Use it!" The man issued a command. The Floor Guardian had no idea what he meant by that, but her sense told her that it was something dangerous.

The other humans sprang into action in response to the command. The group's formation was centered around an old woman in a strange dress, but Shalltear paid them no heed. There was only one person who stood out in her reckoning; the others did not seem like much of a threat.

Shalltear charged forward materializing her Divine-Class item the Spuit Lance and violently clashed with the man. Unexpectedly, the man could stand his ground.

The dress of that old woman began to glow in golden light. Sensing that it was something that could affect her, Shalltear switched her target and swiped the man to the side with her left-hand claws.

The vampire ran toward the woman, but out of nowhere a bald man with shiny dome appeared in front of her and slapped her in the face.

*Splat*

They were on a mission to deal with the Catastrophe Dragon Lord that had been predicted to revive soon somewhere close to E-Rantel, a city of the Re-Estize Kingdom that is close to the border of the Slane Theocracy where they hail from. Almost every member of their unit was on this mission.

They were the Black Scriptures, a secret special forces unit comprising of individuals with heroic-level abilities of the Slane Theocracy. They were elites among elites, whose missions were those of very dangerous nature that could threaten the existence of humanity.

Such as this mission in which they were tasked to subjugate a Dragon Lord. Dragon Lords are the most powerful of the dragons who are already one of the most powerful races in the world. That was why Lady Kaire who was the user of Downfall of Castle and Country, a powerful artifact of immense power left behind by their Six Great Gods that could mind-control any being, was accompanying them on this mission.

However, while on their way somewhere close to the Great Forest of Tob, a pack of shadowy wolves leaped off a cliff to attack them.

The group was able to repel them easily as they were as weak as a goblin, but after a while another being jumped off the cliff and landed gracefully while eyeing their group.

This one was different though. It was a terrifying looking vampire out of nightmare. A powerful one at that as the captain who was one of the Godkins could sense to be even stronger than him… or

This monster could be even stronger than Zesshi!

It was a great threat that could wipe out the whole group.

"Use it!"

The captain was able to maintain his calm and called out his command. The only way that they could beat this monster was to use the Downfall of Castle and Country.

The other members sprang into actions quickly demonstrating their elite capability into a defensive formation to protect Lady Kaire while she was activating their Gods' artifact with the captain in the front preparing to intercept the vampire.

The vampire clashed its lance like weapon against their captain who boasted one of the highest physical attributes among the whole humanity. The creature then swiped the captain off to the side and started to head toward Lady Kaire who was charging up the artifact.

Cedran the Myriad Barriers, a large and well-built man who was a shield bearer, was prepared to leap in front of Lady Kaire to intercept the vampire.

But suddenly out of nowhere at a speed no one could see, a bald man appeared in-between their position and the vampire, slapped the vampire generating tremendous shockwave that rippled through the area, and completely obliterated its body into a chunk of gores and blood splashing to paint the entire cliff.

"Shit, my suit is dirty again with blood." the man was inspecting his suit which caught some droplets of blood belonging to the vampire that exploded. His getups were weird. He was in a yellow jump suit, red gloves, red boots, , and white cape, but perhaps they were powerful enchanted equipment.

Everyone was silent as they were trying to process what just happened, their mouths wide open. Except Lady Kaire who was struggling to control the power of the charged-up God artifact.

Unable to contain it, the old lady decided to direct it at the bald man in front of her who was exposing his back to them. She thought that she could undo the effect later anyway if he was not hostile… or perhaps he could be useful to the Slane Theocracy if he could kill a powerful vampire like that in an instant.

A golden serpentine dragon of pure energy materialized from her dress and washed over the bald man.

"Ouch! Oi, what did you just do to me? That's giving me a headache." The bald man turned to look at the group in annoyed expression while clutching his head with his red gloved hands. They could clearly see his face now. He had a bored looking face, and his appearance screamed… average.

Everyone was even more silent now. Despite his looks, this man just slapped a being to death whom their captain had deemed to be powerful enough as much as a Dragon Lord to warrant them to use their trump card, and now it seemed like he just resisted the effect of an item of immeasurable power left behind by their gods that had never failed before. The freaking G.O.D.

The Black Scripture members shifted their gaze toward something that was happening behind the bald man's back. An orange complex looking magic circle shone brightly where the vampire exploded. Within the circle, luminous orange light morphed into the shape of a human.

Then after the light dimmed down, what appeared out of it was a woman in crimson armor holding a lance, the same one that the vampire used to attack them had. She looked different from before, but it was definitely the vampire.

The bald man also turned back to look at the spectacle behind his back after the headache was gone.

Did the vampire just revive?! I have never seen or heard of something like this before. What kind of magic or item did she use to auto-revive herself?

The captain thought in his mind, then he motioned with his hand signal for the Black Scripture members to arrange in a defensive formation like before again.

"Huh? Where did you pop out from?"

It took a while, but an item given to her by her creator, Peroroncino-sama, allowed her to auto-resurrect upon death. She could have used her skill [Time Reverse] instead which would have negated the damage caused by a single attack completely, but she could not utilize it under her True Vampire transformation. So, she was forced to expend this precious item because of that…

"Huh? Where did you pop out from?"

That damn bald human! I will make him pay for this.

Her attention was now entirely on the man in yellow jumpsuit and white cape. He was standing with his arms crossed in front him with an annoying bored face.

I did not notice him before among the group of twelve people that I attacked. Was he one of them hiding? No… He does not seem to be using any weapon, and he attacked me earlier with his hand at a speed that even I could barely see. So, he must be a monk class fighter like Sebas who stood at the frontline, not hiding in the back. His equipment seemed to be normal fabric clothes without any enchantment, completely different from the rest of the group whose equipment were of high quality.

"What the hell are you?! You can't be a normal human. Are you a player?!" Shalltear shouted at the bald man in anger.

At the mention of the word "player", the strong human that Shalltear fought before had a frown on his face and turned his gaze to analyze the bald man. In her past knowledge from Yggdrasil, players are people who come from the same plane as the Supreme Beings, so they have the potential to become as strong as them

"Hey! Don't be so rude to a person you've just met. You can just ask nicely. Anyway, my name is Saitama. I am a hero for fu-" the bald man stuttered a bit. "I mean I am a professional hero. Who are you?" the now named Saitama held his right hand out for a handshake.

Saitama? He called himself a "Hero" just now. Hero was a special class and title reserved only for the humans which was as rare as Lord Ulbert's World Disaster class. Perhaps the Supreme One might know something about this man. I have to be careful.

"My name is Shal-"

The Floor Guardian was about to respond gracefully, but she paused in mid-sentence. Now that she's not under her [Blood Frenzy] state anymore after the resurrection, she was able to think clearly.

I should not be giving my name carelessly anymore. I made a mistake by telling that martial arts user human in the bandit cave my name because I thought he could not escape me. But this man in front of me, he is different. Ainz-sama has ordered me to retreat if I were to encounter a strong opponent, but perhaps I should try to gauge his strength first before I retreat.

"[Penetrating Magic: Implosion]!" Shalltear raised her free left hand to cast a spell. It was a 10th tier magic that causes the target to collapse or burst inward.

But nothing happened.

What?! Even if the spell failed to implode him, he should have at least collapsed. It was a 10th tier spell! I was right, he is definitely a player with some kind of special item.

The bald man stepped forward shaking the hand that she raised to cast her spell.

"Nice to meet you, Sow-chan. That's a cool looking cosplay you've got. Did you get lost in the forest while on your way to an anime convention or something, little girl? Where are your parents? You don't look so good. Your skin is pale. I am a hero, so I should be helping you to find your parents, but I am kind of lost too. My phone was damaged while I was fighting an alien. Those people over there must be cosplayers who are going to the convention like you too. Let's ask them." The bald man then patted her head and pointed his other hand toward the group she was trying to attack earlier.

What is this blasted idiot blabbering about?

The other people here also looked at him in bafflement.

Wait… what did he call me?!

"My breasts are not small!"

Shalltear swung her lance to slice the bald man who was right in front of her in half with the strength of a level 100 NPC at incredible speed.

But the man just casually blocked her Divine-Class weapon with his left arm. No damage was dealt either as she did not feel any healing effect that her Spuit Lance would produce.

"Hey! Where did that come from?! And why are you attacking me all of a sudden, brat?! Geez, kids these days are so weird."

"Guh! You insolent inferior human!" Shalltear lashed out in anger.

The vampire then repeatedly thrust her lance forward to skew the bald man, but he was able to dodge all of her strikes.

"Don't go calling humans inferior if you are one too." The man replied with his ever-insufferable bored face while evading her lance attack.

"I am not one of you weak humans! I am a true vampire created by the Supreme Being."

Shalltear continued her relentless attacks with her lance.

"Chhunibyou play, huh? I was once like that too."

But the man in yellow jumpsuit just kept on evading her fast attacks with his deadpan expression and irritating eyes.

"Get away from me! [Negative Impact Shield]!"

Purple dome of energy burst from her sending the bald man flying at a fast speed. This was one of Shalltear's special skills. It was a skill that generated a negative energy protective barrier around her that could be used for both defensive and offensive purposes which deals a fix amount of damage that ignores durability.

But the bald man was able to adjust himself midair and landed on his feet a fair distance from her toward the group.

"I actually felt that. I haven't felt pain in a while after I have become too strong. What was that? Was it a psychic ability like that Potato of Tumor brat? Man, little girls are strong these days."

The man seemed unharmed. Shalltear gritted her teeth in frustration. Not because she could not harm the guy, but because of that ever-present bored face of his.

Is he mocking me?! I am a being created by the Supreme Being! I am the strongest Floor Guardian of Nazarick!

"Team! Assist him!"

The group which was in defensive formation earlier came charging to surround and attack her.

Their long-range fighters went first.

"[Death Coil]"

The magic caster in a black robe launched an ominous skull green ball of death.

"[Sacred Turn Undead]!"

A blonde woman in priestess clothing casted a holy magic spell toward her from afar.

"[Poison Dagger]!"

Another blonde woman in school girl uniform pulled a dagger from her school bag and threw the projectile at her.

But the Floor Guardian's high-level stats, skills, and equipment resisted all of them.

Then came the close-range melee fighters.

"[Heaven's Chain]!"

One of them threw a long chain from her left to attempt to restrain her.

"[Sky Piercer]!"

The spear user human that she has identified to be the captain of the group charged at her front.

"[Rhino Force]!"

A blonde man used martial arts and charged in with a lance like a knight on a horse toward her right side.

"[Earth Shatterer]"

A masked man in red and black body suit launched his power-piston right hand fist toward her left side.

"[Time-Lock]!"

Wielding a pair candy cane looking rapiers, a short human with brown hair appeared behind her.

They were trying to circle and simultaneously attack her in the middle. That's why they only sent their fast melee fighters in first. A good plan to take down a strong opponent quickly. But for her…

"Die, worms."

The strongest Floor Guardian could perceive them from miles away. Shalltear spin and swung her Spuit Lance in circle shredding some of the attackers into pieces beyond resurrection.

Only the captain was able to block her attack, but he was launched far away.

As she was about to launch forward to finish off the remaining members of the group who were standing in defensive formation, the bald man in yellow jumpsuit from before suddenly appeared in front of her at a speed even she could not see.

Because it was so sudden, she crashed into him making an uncomfortable sound and fell on her buttock.

"Oi brat! Why did you kill those people who were playing along with you? You cannot go around killing people for a play!"

After having recovered from slight dizziness and gotten back up, Shalltear realized that the hero was clutching her Spuit Lance arm.

Shit! I got captured!

The vampire used all her strength to get away, but his grip just did not bulge at all.

"You are in big trouble, young woman. I will tell your parents about this."

My parents? Does he know Lord Peroroncino? No… He's trying to deceive me.

"Release me, you bastard! [Negative Impact Shield]!"

Just like before, her special skill was effective in sending the bald man barreling a fair distance from her.

I can't let myself get captured again. I have already used up my [Negative Impact Shield].

I have to learn about him as much as possible before I retreat and report back to the Supreme One.

"[Life Essence]!"

Shalltear's mouth dropped. That was because when she looked at the bald man, he radiated a massive green aura which enveloped her entire field of vision like a wall that pierced through the sky.

Impossible! He must be using some sort of anti-information magic! But if he's not… I have to get the hell out of here!"

"[Greater Teleportation]"

With that, the Floor Guardian teleported into the forest and escaped before the bald man looked up.

"Huh? Where did she go?"

Name: Saitama

Race: Human

Karma: 100 – Neutral Good

Total Level: ?

Job Level: ?

Hero ?

Status:

HP – Exceeds Limit

Mana – 0

PhyAtk – Exceeds Limit

PhyDef – Exceeds Limit

Agility – Exceeds Limit

MagAtk – 0

MagDef – Exceeds Limit

Resistance – Exceeds Limit

Special Ability – 0

Total - ?

A/N: Thanks for reading. Please review and pm me if you have any criticism or suggestion. Tell me if the ending of this chapter was anti-climatic.

I copied and paste some of the writing from the light novel.

For the fight scene between Shalltear and the Black Scripture, I used the anime version instead of the light novel or manga.

Saitama's mental training by turning off the air conditioner during summer gave him resistant to every mental attack including World Class Item!

Next chapter we will get to see Zesshi Zetsumei. Might take a while though because I will be working on continuing a different fanfic that some of my followers want.