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, so read at your own risk. Enjoy!

Note: I made some slight changes to the previous chapter. Nothing major, except that I forgot to include a part where Saitama asked the captain who the little girl (Shalltear) was.

Chapter 3

"Hail Ainz Ooal Gown" – Normal Speech

Hail Ainz Ooal Gown – Thought

"Hail Ainz Ooal Gown" – Flashback

Throne Room – Great Tomb of Nazarick

"Have you sent a scouting party to discover the cause of that earthquake earlier, Albedo?"

Sitting atop of a glorious throne was one of the most powerful being in the shadow of the world, Ainz Ooal Gown, a skeleton overlord. Standing by his side was his right-hand man, or rather woman, the Guardian Overseer Albedo, a being of otherworldly beauty and grace.

"Already done, Ainz-sama."

"Good job, Albedo. Now then… Report, Shalltear."

And kneeling in respect in front of him was one of his other top servants, a true vampire Shalltear Bloodfallen, and the reason why he had to rush back to the Great Tomb of Nazarick from his Momon the adventurer persona back in the human society.

"Yes, Ainz-sama! While I was on the mission to collect humans with martial arts somewhere near the Great Forest of Tob, I was attacked by a human player!"

Ainz had already heard about this briefly from Albedo over [Message], so he was not that alerted.

"Were you hurt?" the Overlord asked in a worried voice like that of a father.

"The bald bastard could do nothing much to me, Ainz-sama." the prideful vampire refused to admit her utter defeat to a human.

"…Except that he was able to kill me while I was in my True Vampire form, so I was forced to expend the auto-revive item given to me by Lord Peroroncino…"

"You fool! How did you let that happen?!" the Guardian Overseer yelled at her subordinate.

"Shit!"

A loud noise reverberated through the large hall when the Overlord hit his throne's armrest with his right fist, furious at himself for putting one of his friends' children in harm's way.

"Eeekkk! I'm sorry, Ainz-sama! I've failed you." the loli vampire performed a dogeza, and her small frame was shaking.

"Allow me to punish this bitch for you, Ainz-sama!" Albedo summoned her battle axe.

Emotion suppression washed over the undead to calm him down. The intensity of the red glows in his eyes died down a bit, and then he realized what he just did.

"Albedo! Stop. Forgive me, Shalltear. I am not angry at you…"

"I am angry at myself. It is my fault that this happened."

"That is Impossible, Ainz-sama! A Supreme Being like you could not possibly have made a mistake. It is this lowly servant's fault. Let me correct my mistake by killing myself right here and now!"

"Stop right now, Shalltear."

"I should not have underestimated the threat of players who are very likely to have come to this same world too. It is really my fault."

"Ainz-sama…" glint of tears appeared in the vampire eyes when her master showed her so much compassion and generosity.

"Anyway, is there any information you have on this player?" the Overlord continued his inquiry. Information is very important, a lesson that his friend Punitto Moe had taught him.

If there is a player who could defeat Shalltear, he or she would have had to be someone of high rank and well-known back at Yggdrasil.

"Yes! I was able to trick the foolish human into giving away his information. His name is Saitama I think. Beside all the other incomprehensible nonsenses that came out of his mouth, I've learned that he is lost, and that he is a hero." the vampire swiftly responded to her lord.

"A hero?!"

Ainz was alarmed. Hero was a special title and class back in Yggdrail. It was a rank below World Champion, but one would still have to be a very powerful player to obtain such title. Ainz was an Upper Mid-Tier player, and Shalltear was somewhere around Low High-Tier, but a Hero was someone from the Upper High-Tier.

"That's what he claimed to be, Ainz-sama. But I did not see him display any special ability."

"Saitama, huh? I've never heard of that name before. And what kind of nonsenses did he say?"

Shalltear then went on to summarize her conversation and interactions with the bald player to her superior.

"A-And he said I was a little girl!"

"Well, at least he got one thing right. Fufufu" Albedo snickered while maintaining her graceful form.

"Grr!" the vampire growled and her red eyes were burning brightly.

While the two servants were having a staring contest, the Overlord was thinking deeply in his mind about what his vampire servant just said.

If this player used terms such as "cosplay", "convention", "smartphone", it means that he is from my world too. But why was he talking as if he had he not realized he has been transported to another world? Why did he act like he did not know who Shalltear was after her resurrection? And what the hell is with "fighting alien". Was he referring to Yggdrasil? There wasn't any alien from outside of Yggdrasil expansion pack or something like that back in the game. What was he getting at. I don't understand this person. Is he even a player?

He had to learn more about this "player". He had to know whether he was hostile or not because back in Yggdrasil, human character players tended to discriminate against non-human character players.

"Tell me what led to your incursion with this player, and how the battle progressed. Was the attack unprovoked?" the Overlord continued his questioning of his servant, and the two stopped quarreling with each other.

"Errr…" Shalltear was hesitating.

"Speak, Shalltear!" Albedo commanded her fellow Guardian.

"Alright! Alright!" the loli vampire pouted. "While I was performing my mission to collect martial arts capable human, I let a target got away-" But because of her loyalty toward the Supreme Being, she was not going to lie.

"You!" Albedo cut in the vampire's story telling.

"Let her continue, Albedo. Nothing we can do about the past. But we can do is finding out what happened, so we can decide the appropriate response."

"My apology, Ainz-sama." the Guardian Overseer bowed apologetically and went quiet.

"Continue, Shalltear."

"Yes, Ainz-sama. When I tried to chase the human who ran away, I encountered another group of humans who were adventurers. I managed to silent all of them except for one ranger who was away from the group. He ran into a forest toward the nearby human settlement, so I sent my familiars to track him down, but they were killed a few minutes afterward."

"I headed toward where that happened, and I encountered another group of humans. But this one was different because I could sense they were powerful."

"So, I attempted to capture them for you, Ainz-sama, but then the bald man suddenly appeared out of nowhere and… and… he took me out immediately with a slap…" Shalltear struggled to retell the painful memory.

"A slap?! Impossible!" the Overlord expressed his shock.

To be able one-shot a top tier character like Shalltear, it would have had to be either an Instant Death spell or a World Class item. The former was very unlikely because Shalltear was equipped with top class items, and skills which made her very resistance to such spell effect. It couldn't possibly have been a World Class item either. Even among the Twenty, the most powerful of all the World Class Items, only the Longinus was capable of killing a top tier player in a single attack, but at the expense of erasing the user from existence too. Plus, it takes time to charge up and use any World Class Item. But from Shalltear's description, this unknown player appeared in front of her immediately and dealt the killing blow.

"Maybe it's because this bitch is too weak, Ainz-sama." Albedo smirked condecendingly.

"Oh yeah?! Wanna see who's stronger?" Shalltear shot back.

"Bring it on, bitch!"

"Cease this, you two. We need to resolve this matter as soon as possible."

What could it be…

Ainz was prodding his throne's armrest while he was quietly thinking the possible reason.

Could it be that there were other powerful players who rushed her from a distance? Or was there a cloaked assassin player that struck her back from the shadow?

Unsuspecting players could be taken out immediately by a group of other players in multi-combat area no matter how strong their avatar build is. In the New World, everywhere is multi-combat area.

"Ainz-sama, permit me to lead a hunt party to take this player down."

"No, it's too dangerous. We cannot charge in head first when we don't know anything about this player."

"Shalltear, are you really sure he was the only player? Who were those powerful people you mentioned earlier? Is he their ally?" the Overlord turned back to his vampire servant.

"I believe so, Ainz-sama. He was the only strong opponent I faced, and I could not sense any other enemies in the background. The group were better than the humans I have encountered so far in this world, but it was just that. They were not strong enough to be considered players, and some of them utilized martial arts which only exist in this New World. And if I am wrong, they were just weak players who cannot pose any threat to me. Whether he is their ally or not, I am not sure about that. I did not notice him being with them at first. For a melee fighter like him, he ought to have stayed close with the group. He said he was lost, and he only appeared out of nowhere to save the group I was trying to capture." the vampire gave her assessment.

"Hm, so the attack was not unwarranted? Was he trying to save those other people?"

"Yes, Ainz-sama. But warranted or unwarranted, humans deserve to be herded like cattle by us, right?"

"That is… correct." the former human hesitated, but he had to act the part.

So, the human was not the aggressor?

"How did the rest of the battle go?"

The vampire recapped her fight after the resurrection. She told her master about how the player was able to resist one of her 10th tier magic attack, and dodge all of her Spuit Lance attacks. His strength was overwhelming. The only thing that seemingly was able to harm the player was her [Negative Impact Shield].

"Strong… He's strong. How strong do you think he is?"

"Not as strong as you, or the rest of the Supreme Beings, Ainz-sama."

"Nazarick is strong, Shalltear. But there were many backs in Yggdrasil who could challenge us. I need to know accurately how strong this player is to prepare a proper counter-measure."

"Hmm… Considering how he was stronger than me physically and the high resistance he had, he ought to be somewhere around Touch Me-sama level. A-And…" the vampire could not comprehend any being to be even stronger than the strongest Supreme Being.

"And what, Shalltear?"

"This was probably some kind of an information counter spell… but when I tried using [Life Essence], I saw his life energy was limitless."

"Of course, it was an anti-information spell. Even my sister Rubedo doesn't have that much power."

"At Touch Me-san level, huh? This is troubling." Ainz was uneased.

"I don't like this. We need more information about this world as soon as possible. I don't want any more of my children getting hurt again!"

""Ainz-sama!"" strong emotions ran through the two servants when their lord displayed so much love toward their lowly selves.

"Was he the only one? Are there other players? Albedo, set Nazarick defense to the highest, and work with Demiurge to accelerate our intelligent gathering network in this world and increase the number of guards for each of the agents. You are permitted to expend more gold in purchasing more mercenaries to complete this order. Send more resources toward the nearby nation, especially the Slane Theocracy. I suspect the group and the player to hail from this country from the direction they were coming from."

"It shall be done, Ainz-sama." the Guardian Overseer bowed.

The former salary man is not competent enough to operate the large tomb like Albedo can, but when it comes to dealing with other players and especially when those close to him got hurt, it's game on.

"And Shalltear, submit a full written report about everything that happened. List out all the capabilities of this player, the information on this group that he saved, and the humans that got away after having seen your face."

"I will, Ainz-sama." Shalltear memorized her order.

When he was wrapping up his meeting, a notification for a message spell popped in Ainz's mind.

"What is it, Naberal?"

It was a call from Naberal.

"Ainz-sama, the leader of the adventurer's guild, Ainzach, has sent a messenger. It seems he wants you to go to the guild immediately, to discuss the vampire that has appeared near E-Rantel."

Perfect!

An opportunity arrived at the Overlord's doorstep.

"I understand. Tell him I am heading there now."

"Shalltear." the Overlord stood up, and turned back to his vampire servant.

"Yes, Ainz-sama?"

"I have another mission for you."

Kyoto – Capital City of Slane Theocracy

At the heart of the capital city of the Slane Theocracy, there was a huge building. It was not a castle or a palace like what a monarch of a country would have in the world, but it was a massive fortified stone mason cathedral built about 600 years ago since the Six Great Gods founded the nation. It was called the Grand Cathedral, and it was an impressive building decorated with intricate ancient arts, and it was surrounded by a ring of tall wall with magic towers at a specific interval.

It served as the holiest place of the Six Gods religion in the world where the faithful of the Six Gods could come on a pilgrimage from all over the world because this was where the Gods descended to the world and ascended to another world after saving humanity from extinction and guided them to be on their own two feet.

Because of its massive size, it was also the headquarter of the country's government main functions.

And one of those was the country's top-secret mission headquarter.

After teleporting back to the capital of the Slane Theocracy by sacrificing one of the God treasures, a sealing crystal that contained the 7th tier spell "Mass Teleportation", the captain of the Black Scripture had to report to the Six Cardinals about the mission as soon as possible.

And right now, he was kneeling in front of the Six Cardinals in the Six Gods Hall in the Grand Cathedral.

"The Black Scripture, the strongest sector of the Slane Theocracy. Five of its members dead on a mission. Four by a mere vampire beyond resurrection, and the other one by the Catastrophe Dragon Lord. On top of it, one of the treasures of the Gods was wasted. Many losses on a single mission. It would take us years to recover from this." Dominic Ihre Partouche the Cardinal of Wind started off.

"We tried to surround and attack the vampire together, but it was no ordinary vampire. Its lance attack was strong enough to shred the 2nd, 6th, 9th, and 12th seats in an instance. I was the only one who managed to react and blocked the attack. The 3rd seat deviated from the prior agreed formation and got killed instantly for it. All members of the scripture except me were knocked out unconscious by the Dragon Lord, and because of what Saitama did… like I have written in the report, I was forced to use the sealing crystal to flee the scene quickly before anyone catch us."

"This Saitama person... He defeated the two monsters that your team had so much trouble with, singlehandedly?"

"That's what is written in the report." Tadakatsu responded.

"Yes, I know what are in the report, captain. But I have a hard time believing what were written in it."

"You're saying that this man was able to disintegrate the vampire into pieces in a single punch, and that his final strike which slayed the Catastrophe Dragon Lord was able to blow off the top of the Dragon's lair that was about 100 meters underground. And to top it all off, he was able to resist one of the strongest God Artefacts that has never failed before."

"That's what really happened, Cardinal Dominic."

"Are you sure he did not use any magic item or spell to do what he did?" the Cardinal of Water Ginedine Delan Guelfi tried to deduce.

"Not that I am aware off. I have asked the man how he did what he did after teleporting back to Kyoto, and I quote "I just punched."" Tadakatsu still told them what really happened even if he knew they were not going to believe him.

"Unbelievable! Such power is even beyond what the Six Gods could do. Blasphemy!" the sole female member among the Six Cardinals, Cardinal of Fire Berenice Nagua Santini, expressed her disbelief.

"Can you determine if he is a player from the same world as the Six Gods, or if he is another Godkin?" Maximilian Oreio Lagier, the Cardinal of Darkness, gave his opinion.

"From what he's said, I believe he is not from the same plane of existence as the Six Gods or the Eight Greed Kings. Although he mentioned the word "cosplayer", but I do not know what that entails. And for the latter, I do not believe he is a Godkin as he looks too old to be one as Godkins outer appearance do not change from their teenage year like me and the Extra Seat." the captain listed his analysis.

"No matter how he did it, he can become a very valuable pawn. If we run into another problem with the vampire that escaped, he could be our weapon. Or we could unleash him on the demi-humans..." Raymond Zarg Laurasan, the Cardinal of Earth, who is one of the more reasonable individuals among the Cardinals offered another point of view.

"I agree." Maximilian agreed with Raymond.

"Now that the dead 4 members of the Black Scripture cannot be resurrected, we need to replenish our forces. Captain, what is your opinion on this stranger?" he continued.

"He said he is a hero from another world. He's willing to save strangers when they are in trouble. I believe he can become a very valuable asset to the Slane Theocracy and humanity as a whole. But he is looking to return back to his home world."

"We can use that to our advantage. Convince him to join the Black Scripture by promising we would help him return to his home." the Cardinal of Light, Yvon Jasna Dracrowa, one of the slier Cardinals said.

"I will try…" having caught on the implication behind the snake's words, Tadakatsu was hesitant in agreeing to the order.

*clack clack clack*

"Should it be like this? Or should it go this way…?"

Saitama was waiting in a hallway outside of the room that Tadakatsu went into have his meetings with some old people. He was given a Rubik's cube by the captain to pass the time.

After the battle with the Catastrophe Dragon Lord, he and the rest of the group teleported to the capital of the country where the group hailed from. The instant transportation reminded him again that he was now in a different world, one that is like those fantasy manga and game, but with real people.

He was given simple white tunic and brown cotton trousers by the captain before teleporting, so he did not surprise anybody when they suddenly appeared in a courtyard full of civilians, priests, and nuns of a large cathedral. Unconscious combatants from the battle were rushed off to get treatment immediately by other people in the courtyard, so he did not have to do anything to help them.

The captain arranged him a room with food in the cathedral to rest after a long day, then he went away to write mission report for his superior.

Saitama woke up later in the evening, just in time when the captain came to pick him up for the meeting in case he was needed. But apparently, he was not needed due to some secrecy reasons. That works for him because he did not really want to involve with some big shady governmental organization. He just wanted to save people. The Hero Association back in his home world was okay because he could choose to follow them or not.

*creak*

The door to the meeting room was being opened.

"Hello, Saitama-san."

And coming out of it was Tadakatsu still in his clanky armor.

"Oh hey, Keisuke!" Saitama waved back.

It took him some effort, but he was able to remember the names of these new people he first met when he arrived into this New World.

"I'm glad that you call me by my first name now. Did you wait too long?"

"Hm, I did not really count the time because I was too focused on this thing. This take me back to my old day back in high school. How do you solve this again…?" Saitama scratched his head.

"Oh, the Rubik's cube? I'm glad that you like it. It's crazy though that it also exists in your old world. Are you sure the Six Gods have not touched your world before in the past? They bring many great things everywhere."

"There are religions back there, but the ones of your description? Doesn't ring a bell."

The society of his world has advanced so much that only a minority still practiced religions. Maybe there is a religion that worship these six deities, but he's not really knowledgeable about religions.

"Strange… There is so much we don't know about the world."

"How did your meeting with those old geezers go?" Saitama asked the captain how everything was going. To lose so many on a mission, he probably got in much trouble.

"A little bit more than the usual. I as a leader has led my team to incur so many casualties on a single mission." trace of sorrow could be sensed from Keisuke.

Saitama had learned that people can be resurrected from the dead in this world, but only if their bodies remain intact. 4 of the 5 members that died did not this condition.

"Keep your head held high, Keisuke." the hero cheered his new ally.

"Thank you, Saitama-san. Anyway, I would like to ask you one thing. Would you like to join the Black Scripture?"

"No, thanks. Sounds troublesome, and I don't like being ordered around." the bald man rejected immediately.

"Why not? You will be able to help saving lives like you did back in your old world." the captain continued his persuasion.

"Too much secrecy from what you have described to me. I don't like that."

His hero work was just a hobby. He was able to learn more about the organization that the captain was from when they were walking toward the meeting room.

"The Cardinals said that they could help you returning back to your home world."

Then the nice captain dropped the hammer. It's the same in any world. There is no such thing as free lunch.

Saitama does not know what to do to get back to his home world. He only knows how to punch. He does not know science. He does not know magic. But these people do, and they have a large organization, so they could help him.

"…Is there a part-time position available?"

Saitama was heading to this Treasury room with Keisuke. He accepted his invitation to join the Black Scripture... as a part-timer and on a condition that he can refuse order if he wants to. According to the captain, every member is given at least a relic left behind by their gods. And he also wanted to make up to him for his hero costume that got destroyed when he was helping them.

The man didn't really want anything. He just wanted simple clothes like his old costume to freely move around, and he definitely did not want bulky armor and equipment like the ones he had seen from the group. But because of the captain's insistence, he decided to go along and see what he got.

When they got close to the Treasury, they heard a clack clack noise. There was a lone figure leaning against the wall with a scythe beside her. She had a unique hairstyle, with the left being a different color from her right. One was scintillating silver, while the other was an all-consuming black. The color of her eyes was similarly mismatched. She was a stunning beauty, and Saitama had never seen anyone with such exotic appearance back in his world before. When they looked at her hands, they found the source of the noise. She was trying to solve the Rubik's cube that Saitama had been working on too.

"One face is simple enough but getting two faces right is hard."

She was talking to Keisuke, but she did not even turn to face both of them. Her attention was only on the cube.

"So… who is this guy?"

"His name is Saitama. He will be working with us from now on."

"Nice to meet you."

Saitama held his hand out for a handshake. But the woman glanced at him briefly from the side with disinterest. When she saw his 4/6 completed Rubik's cube, she frowned. But then she went back to concentrating on her puzzle.

"Okay."

The hero also didn't care and let that one go to focus on his own Rubik's cube.

"I thought all the seats have already been filled up. What happened? Is this connected to your meeting with the Cardinals?" the girl continued her chat with the captain.

"You were given a copy of the report, right?"

"Didn't read it." the girl replied without any hesitation "Besides, asking someone who knows is faster. Did Thousand Miles Astrologer make a mistake? You were sent out to deal with the Catastrophe Dragon Lord… did something happen?"

Saitama didn't really pay too much attention toward the conversation between the two as he was getting close to finishing the puzzle.

"We engaged a mysterious undead creature that resembled a vampire. Four died in the encounter. But we were saved by Saitama here. And again because of him, we were able defeat the Catastrophe Dragon Lord. Zairos died in that battle."

The captain's brief summary made the unsuspecting Saitama caught the girl's attention.

"Interesting… Who were killed by the vampire?"

"Lexicon, Liones, Beaumarchais, and Kotaro. They were killed instantly from a single attack of the vampire."

"The Time Turbulence, Holy Knight, Divine Chain, and Heaven and Earth, huh? I thought the little kid was decent."

The girl finally raised her head to look straight at Saitama, but he didn't notice as he was in the zone. But if he had been looking at her, he would have gotten a glimpse of the girl's mismatched eyes which seemed to sparkle with what seemed like curiosity, delight, and battle-lust.

"Between this Saitama and I, who do you think is stronger?"

"Hmm…"

"You're hesitant?"

The girl walked in front of Saitama to inspect him. But the man didn't bother to notice the girl as he was having an intense Rubik's cube solving session, arranging the squares on the puzzle at super human speed.

"What are you doing?" Keisuke asked the girl.

"Just testing the new recruit."

Then the girl swiftly pulled her scythe and swung it at Saitama's midsection, but Saitama just unconsciously duck so quickly to avoid damaging his new cloth that she could not even see and continued to focus on his puzzle.

"Almost there…"

"He dodged… Tsk."

"Combat is not permitted on the ground of the sacred cathedral." the captain warned the girl.

But when she turned to look at him with a pair of eyes that promised death, the captain trembled and backed off. The girl then pressed more attacks on the hero, slashing left, right, down, up in rapid successions.

"Cut it out!"

Her annoying attacks managed to finally garner a reaction from Saitama, but then he just went back to focusing on the Rubik's cube.

This angered the girl tremendously. She released her killing intent and started attacking seriously with the intent to kill.

"[Ability Boost] [Greater Ability Boost] [Super Ability Boost] [Full Throttle]… [Hurricane]!"

After having amped herself up with various martial arts, she released one of her most devastating attack, the [Hurricane]. Her body spun quickly into a mini tornado. But it was not just any tornado, it was a tornado of slashes from her scythe which put the martial arts of a certain Warrior Captain to shame.

But not a single strike was able to land on the man as he dodged all of them so quickly, leaving after-mirage.

"This… This… and if I do this…"

"Stop it, Zesshi!" the captain finally got his act together and yelled at the now named Zesshi using her real name.

"Make me!"

"Okay then."

"Argh!"

But instead of the captain, it was Saitama who answered her dare and karate chopped the attacking girl on the shoulder making her dropped to the ground.

"hah-hah-hah"

The girl was panting as she was struggling to get up from the seemingly mundane attack, and when she looked up to look at the person who dropped her, her face was all smile.

"I did it!"

And at the same time, the bald man held his completed Rubik's cube high in the air above his head in pride.

"Give me children!"

"Oh, okay."

Too caught up in his achievement, Saitama replied carelessly like he did with his first cyborg disciple.

"Huh?"

The girl pounced.

A/N: Damn it. Writing is hard. Why do some authors make it look so easy?

Anyway, I hope you enjoyed this chapter. Give me reviews please. I don't know if I did the Shalltear part right. A reviewer told me to make the part where Shalltear retells her encounter with Saitama to be funny. But I think Ainz will become serious and focused if he learns that his children got hurt, so I made that scene serious.