Sebas looked up at Yami with surprised expression on his face.

"Sparring with Yami-sama...?"

"Yami-sama, i'm afraid that with my skills compared to you, i cannot deliver the full results that you seek." Sebas bowed again in respect.

"No Sebas, you and I both are monks. You are the perfect person to have a sparring with and besides..."

Yami turned around and flexed both of his arms.

"We monks have to train everyday, hone our skills and always be in top condition. We use our bodies as weapon and improve ourselves constantly, just like swordsman who improve their swordsmanship... and mages who obtain better staff materials to make their magic even stronger. When our body becomes rusty, it becomes like an old rustic weapon that became useless. Even great musicians lose three days of skills from not practicing for one day."

Sebas looked at Yami with admiration and awe on his face.

"Your words are far too wise Yami-sama, i would be honored to spar with you."

Yami turned back to Sebas and grinned while approaching Sebas with a handshake.

"Excellent! Thank you Sebas, I appreciate it."

"I am always at your service" replied Sebas, returning the handshake.

After few seconds of shaking each other's hand, Sebas noticed something unusual.

"I can't let go of my hand."

He looked back up to Yami, who was smirking.

"Is he testing me?"

Sebas felt the grip pressure in the handshake, who in returned attempted to match the same pressure as well, only to collapse on the ground.

"?!"

Yami then with the palm of his hand, slowly pushed Sebas's hand towards him, making him lying down on the floor. Needless to say, Sebas was shocked of what just happened.

"What is this?! All of the sudden, i've felt i was overwhelmed by a great weight, as if the entire mountains were on top of me!"

Seeing his confusion, Yami couldn't help himself but to chuckle for doing a "sneak attack" on him.

Aiki

An ancient Japanese jiujutsu founded by Takeda Sōkaku, where the defender blends with the attacker, then goes on to dominate the assailant through the strength of their application of internal dynamics or Ki energy to affect techniques by understanding the rhythm and intent of the attacker to find the optimal position and timing to apply a counter-technique.

When Yami let go of his hand, he saw Sebas stood back up with confused expression on his face which made him laugh.

"Hahaha! Sorry about that, it's just a little habit of mine."

As Sebas was straighten his clothes, Yami asked him a question.

"Now Sebas, did you know what i just did?"

"No Yami-sama, i believe this is beyond my knowledge. I apologize." replied Sebas.

"I see... so even high caliber monk like Sebas have no knowledge of Aiki. The moment he grabbed my hand, he didn't know how to counter it and kept being overwhelmed. Looks like in this world, they don't know any modern martial arts after all... but i'll hold my judgement for now until we spar."

After getting out of deep thought, Yami looked back up to Sebas and grinned.

"All right Sebas, you ready?"

"Hai, Yami-sama"

Both Sebas and Yami went into a fighting stance and raised their Ki. Neither moved for a while, until Yami rushed and delivered a punch, which Sebas blocked the oncoming punch with his arm. Yami then followed up by a kick to his face but only to hit air and see Sebas dodged it by leaning his head back and tried to punch Yami at the same time, only to be blocked by his palm.

"Oh ho~ He can keep up in his human form? That's impressive, I can't wait to fight him in his true form someday."

As the exchange continued, Yami blocked one of Sebas's punch and delivered a straight punch to his face, only to hit air again with Sebas dodged the attack by crouching and grabbed Yami's arm with both of his hand at the same time and then tried to throw him, which caught him off guard.

"A submission technique?!"

Yami landed both of his leg on the ground and then tried to counter throw him with one arm, lifting him but Sebas let go of him on time in mid air and he saw him landing safely to the ground.

"Sebas doesn't know any modern nor ancient martial arts but he knows basic blocking, punching, kicking, and grappling techniques. Its not even unpolished at all and feels like i'm fighting a proper mixed martial artist, interesting..."

While Yami was in deep thought, analyzing the entire sparring, light bulb came on his head and grinned.

"How about I switch it up a bit?"

"?"

Sebas looked to his lord, confused to see him looking completely relaxed while hopping with his left foot and then his right foot, seemingly lowering his guard.

"Yami-sama must have some sort of plan."

Not lowering his guard a single second, Sebas ran in an extreme speed and delivered a punch to his face, only to be dodged by Yami moving his neck to the right.

"!"

He then followed up by rapid multiple punches, which were also dodged as well by leaning backward.

"I can't land a hit!"

Float like a butterfly...

As Yami was easily dodging Sebas's entire barrage of incoming punches, he then switched his foot stance and delivered a fast right jab.

Sting like a bee!

BAM!

"!"

Sebas was hit by a powerful punch on his chin and flew about few meters before landing on the ground. After laying on the ground for solid few second, he got back up while rubbing the wounded chin. Yami was slightly surprised that he stood back up easily and analyzed the ordeal.

"A strike to a chin should cause lose of balance and a concussion due to the brain rattling all over the place inside the skull. Even people who are very weak can knock out a trained athletes if aimed correctly... I guess heteromorphic Races like Sebas has different physiology than humanoid races despite being in human form. This means that about half of my techniques won't work on them "

"As expected of you Yami-sama, that was a splendid attack." said Sebas, wiping out the blood from his mouth.

Yami broke out of his thought and smiled.

"You're tougher than I thought Sebas, you're doing quite well."

"I am honored by your praise."

Yami took a powering up stance and chuckled

"Fufufu, now then... how about we took it up to next level? Prepare yourself Sebas, if you don't go all out in your current state of form..."

"You will get seriously injured!" Yami spoke in a very serious tone with demonic grin, causing Sebas to flinch.

Each Monks have 2 different types of Ki.

Some monks have the type of ki where they hides their intention to fight, instead focusing on sensing his/her environment, then releases it quickly in response to danger with a state of calmness and a clarity of mind like Sebas.

I, along with the other monks, in the other hand use anger to exceed their limits, making our Ki "Explode"! By being aggressive in combat, and very rarely strays from the offensive, we read the opponent's movements by exciting ourselves.

"In YGGDRASIL, I am the only monk in the world that can use both kind of Ki. When i was fighting Sebas earlier, i was using the calm type of Ki just like him; however, my true natural ki is..."

Yami eyes started to glow red with smokes coming out of his mouth and jumped towards Sebas in extreme speed .

DOU KI!

"HIYYAAA!"

[Nejiri Nukite]!

When Yami throw a spinning knife hand thrust with a yell in the air, Sebas blocked it with his arm but not all of it, causing his arm to feel sharp pain. As soon as Sebas saw Yami land, he turning around and did a spinning back kick but managed to dodged it by an inch of his hair by lowering his head. However...

"!"

He didn't realize in time that Yami was about to follow up both a flying knee to his lowered face and a double elbow strike to the top of his head at the same time.

[Hak Ko Erawan]!

After the attack, Sebas used both of his arm to barely block both the bottom double knee and top elbow strike at same time in order to buy a half of second time for him to pull out his head safely; however, he felt the pain throbbing on both of his arms from impact.

"What strength!"

When he looked back up, he lost track of him for split second.

"Where are you looking Sebas?"

Yami then got behind Sebas and continued to attack him with endless barrage of powerful punches, not letting him rest. Due to the sheer speed and the strength that he had, Sebas almost couldn't keep up with him and continued to be overwhelmed over time. For Yami, although he was using his natural ki, he still was not trying 100%.

"He's trying his best to keep up with me, I'm still impressed that he's still able to in his current form. If he was in his true form, he probably has much better chance to fight back but if this continues... Sebas will definitely lose."

After launching him away with a powerful punch, Yami appeared in front of him in quick burst of speed. Sebas, sensing that he would kick him with his right leg, he braced himself to block it with two arm but then was caught off guard when Yami kicked with his other leg instead.

"!"

Not having enough time to block, Sebas got hit in the shoulder arm and was sent flying to the wall. After the impact, he grabbed his shoulder arm in pain while in one knee to the floor.

"Tricked ya, didn't i?" said Yami, leaning to his face with a grin.

"Indeed Yami-sama. I've thought you were going to kick with your right but i was fooled." Sebas replied.

As Sebas stood back up, Yami went to the basic open fighting stance, seemingly leaning towards his right leg .

"It's called [Gamaku]"

"[Gamaku]?" Sebas tilted his head in curiosity.

Yami then lifted his right leg up, which surprised Sebas.

"You've probably seen my right leg looked like it was my center gravity but in actuality, it was my left leg. By keeping the balance of my upper body and lower body separately, i can visually fool my opponents the center of gravity."

As he was demonstrating in front of Sebas with his body, Yami continued to explain.

"This way, although it looks like you're going forward but you're actually backstepping. It may look like i'm going for a right kick..."

Seemingly going for a right kick, Yami then delivered a fast left kick, stopping few inches from Sebas's face.

"It was actually the left kick!"

When Yami finished his explanation, Sebas bowed in much respect

"Sasuga Yami-sama, your techniques are ingenious and flawless. I believe that i still have so much to learn."

"Ahahahaha..." Yami laughed while scratching his head while sweatdropping.

"It's actually an ancient Karate technique... but since nobody know what that is; i guess i can pretend that i invented the technique."

After few seconds of silence, Yami started to stretch his arm while yawning.

"I guess it's already getting late now, I'm tired. Thanks for your time Sebas, we can continue this later. Could you take me to my room?"

"As you wish".

Both Sebas and Yami stepped out of the room and started to walk to the direction of his room. They managed to reach his room less than a minute since it was close to the Test Arena.

"All right, I'll see you tomorrow Sebas" Yami opened the door and entered the room while yawning.

"Have a good night rest, Yami-sama" Sebas bowed his head and walked away.

After closing the door, Yami took off his sunglasses and put it on the desk. He also grabbed the empty cigarette box from his pocket and threw it away. He then took off his jacket and tie and threw them somewhere on the floor while lying down in the bed with his upper area of white shirt unbuttoned.

"Man, i'm too lazy and sleepy to change... i guess i'll shower tomorrow morning when i wake up."

Yami closed his eyes and quickly fell asleep while snoring loudly in his bed.

Next Morning...

With the lights from the morning sun shining through the curtains of a window, Yami rubbed his eyes and woke up while stretching both his arms and legs.

"That sleep felt good..."

As Yami got out of bed, he took off his entire clothes and head into bathroom to take a shower. After he finishes showering and drying himself, he wrapped a towel around his waist and walked out...

...to only see Narberal with cart full of food in his bedroom.

Narberal froze for few seconds before heavily blushing after seeing Yami's half-naked.

"Yami-sama, please forgive my rudeness! I knocked on the door and you did not respond for some time so i went in to check!"

While she was looking down, Yami started to chuckle.

"Don't worry about it, you didn't do anything wrong."

As Yami walked towards to the cart, he noticed that Narberal was staring at him for quite some time.

"Like what you see?" said Yami, teasing her with his body.

"Y-Yami-sama!" Narberal, who snapped out her thought, bowed her head even lower in guilt while still blushing.

"Ahahaha! I'm just kidding, thank you for bringing breakfast by the way. You can leave now."

"Hai!"

After Narberal left his room, he finished his breakfast and went to his closet where it was filled with the same bartender suit he always wear. While looking at the mirror, he felt satisfied how he looked overall and went to the drawer. Opening it, he picked up one of the pack of cigarette box and put in his pocket, where an another box was magically appeared in the empty space. He walked out of his room and started to walk towards the throne room.

"Good morning, Yami-sama"

In the hallway, two maids bowed towards Yami while cleaning the hallway

"Hey! Good morning to you two" he greeted back with his signature smile on his face.

Few minutes later, he reached his destination and opened the door, where Ainz was sitting with [Mirror of Remote Viewing] on the table along with Sebas who was standing right next to him.

"Good morning, Yami-san"

"Mornin' Momonga, You're up earlier than i thought." said Yami, scratching back of his head.

Momonga looked up to Yami with deadpanned expression on his face.

"I'm an undead remember?"

Yami blinked before realizing the dumb statement he just said and sweatdropped.

"Y-you're right..."

He then turned to Sebas who greeted him with respect.

"Good morning Yami-sama, did you sleep well last night."

"I did Sebas, thank's for asking. How's your arm by the way?" said Yami.

"There's no need for your concern, I've already heal them after our sparring session.". replied Sebas

"I see, thats good."

Finishing talking to Sebas, Yami curiously went up to Momonga.

"What are you doing?"

"I'm trying to figure out how to use the [Mirror of Remote Viewing]. It should be very useful in securing the area around Nazarick." Momonga replied while moving his hand around in the air.

After moving around his hands in many different way, Momonga figured it out how to use the item properly in when to Zoom in, zoom out, and move around.

"Congratulation, Momonga-sama" said Sebas, while clapping.

"Thank you, Sebas. Sorry for making you do this with me."

"Staying beside my master and following his orders, that is the butler which Lord Touch Me created and my reason for existence."

"I see. Yami-san, let's search for areas where there might be people."

While Momonga was moving his hand around to look around with [Mirror of Remote Viewing], he noticed a village with lots of movement.

"A festival?"

"Doesn't look like it, Zoom in closer" Yami replied .

When it zoomed in, they saw knights riding horses going around and killing the terrified villagers who were attempting to flee. Men, woman, and children alike were getting killed left and right, without remorse. Momonga, who was watching this all, was confused at himself.

"Something is wrong. I would've faint if i saw this before i came to this world. How can i watch all of this so calmly? Is being Undead not only restricts statuses like fatigue but also my emotions? Has my heart become something inhumane?"

He then turned to Yami, who seem to be watching all of this calmly as well.

"Yami-san too... is it because he's a monk who can control his emotions with his ki or is he used to seeing stuff like this?"

As the man was dying, both Momonga and Yami saw him crying while muttering to spare his daughter.

"What shall we do?"

Momonga turned to Sebas, who was also watching as well.

"Leave them. There's no re-"

"Like hell we are."

Both Momonga and Sebas turned to Yami, who was already walking towards the door.

"We're gonna go rescue them and kick all of their asses."

"Yami-sama..."

As Sebas was looking at Yami, Momonga looked back at Sebas in shock and saw a silhouette image of his creator behind him.

"Touch-san?!"

Momonga had a flashback where he and Yami were walking along with Touch Me, who rescued them from PKed by other players.

"If someone is in trouble, it's only natural to help them..."

He then looked back at Yami and remembered what he said when they were younger.

"The strong protect the weak, that's the duty that we have..."

After looking down silent for few seconds and seeing a woman and a girl running away from soldiers, he finally made his decision.

"Either way, I eventually have to test my strength in this world."

"Sebas, raise Nazarick's security level to the maximum. Send in a few soldiers who are skilled at stealth or have the invisibility skill."

"Understood."

Momonga summoned [The staff of Ainz Oowl Goan] in his hand and called out his best friend before he could leave the room.

"Yami-san, let's go."

"Now we're talking!" He turned around and smirked while cracking his knuckles.

When Yami walked up to him and grabbed by his shoulder, Momonga cast a teleportation spell.

"[Gate]."

Scene Change

"Onee-chan..."

As one of the four knight started to walk towards an injured girl that was protecting a little girl, she cried and hugged her harder.

"Nemu!"

Before the knight could deliver the final blow to an injured girl, he stopped.

"W-what the hell?!"

"What is that?"

"What?!"

"?!"

The girl looked up in confusion and looked at the direction where the knights were looking at. She saw some kind of portal for few second before seeing 2 figures stepping out. In the left, she saw an undead skeleton that wore elaborate, jet-black academic gown adorned with golden and violet edges, which terrified both her and the little girl named Nemu. Another figured that she saw was a blonde man who was right next to him while grabbing on its shoulder.

[Grasp Heart]!

Momonga raise his hand in front of the knight who tried to kill the girls and a silhouette of a beating heart appeared. He crushed it without hesitation, causing the knight to die instantly and collapse to the ground. He looked at the corpse for few seconds before going into a thought.

"I don't feel anything, even when i kill people. I guess both physically and mentally, I've stopped being human."

"A-a monster?!"

As the 3 knights murmured and whimpered in fear, Momonga approached to the 2nd knight closer.

"You can chase woman and children, but you can't go against someone different from you? I went through the trouble of coming here. I'll have you assist me me with my tests."

[Dragon Lighting]!

Momonga pointed his lightning charged finger toward at one of the knights that dropped his weapon and shield and ran in fear. It blasted the spell at the target and completely electrocuted him.

"So weak. He dies so easily with mere 5th tier magic."

The remaining two knights slowly stepped back in fear and run away through the forest. After running for certain time, the knights thought that they managed to escape from this nightmare.

"Where the fuck do you think your going?"

Hearing a demonic voice behind him, one of the two knights was unable to move before finally realizing that there were two hands on his helmet, preventing him from escape.

[Head Shaker!]

Yami started to shake the knight's helmet violently, vibrating many times in span of seconds, causing the head to hit the helmet infinite times and turn into a bloody mess filled with brain matter and pieces of skull. Seeing this horrific scene, the last knight swung his sword in fear and strikes Yami's back but no avail. Instead, his sword broke and snapped in half.

"?!"

Seeing the culprit, Yami dropped the corpse and started to walk towards the final knight, who was slowly walking back in fear before losing his leg balance and driven into corner, where he hit the tree. The knight started to pray, hoping that God would save him.

"Do you think that by massacring the innocent men, women and children, God would save a scum like you?!"

Yami's eyes glow red with a demonic look on his face while smokes were coming out of his mouth.

"Die."

He proceed to kill the knight with his [Tiger Stance]. The knight screamed in pain and agony, as he was ripping and shredding the armor and flesh alike with his claw shaped hand like a feral beast while laughing manically, making his internal organs and blood fly everywhere. When the knight finally stopped screaming and died, Yami started to walk towards back to where Momonga was while looking at his bloody hand.

"I've never killed someone so brutal in my life... and i enjoyed killing them. 'An arrogant monk who's a cruel fighting junkie but has the kindness to protect the weak.'. I've lost my temper before but not to that degree. I got so pissed off the fact that piece of shit killed weak innocent people. Is the description of my character getting closer to truth? "

Yami reached to where they were and whipped both of his hand in supersonic speed to make the blood completely off.

"How were they?" Momonga asked.

"Weak as hell." Yami replied in emotionless tone.

"I see..."

Momonga had a concerned look on his face for few second before casting a spell.

"Create Middle Tier Undead. Death Knight!"

A purple goo like aura started to cover one of the corpses and started to stand up while twitching like crazy, causing Momonga to look in slight disgust.

"Ugh. It takes over a dead body? That's pretty different from Yggdrasil."

Once it stood up completely, the same purple goo came out and covered the entire body and started to become bigger while the eyes were glowing red before finally towering both Momonga and Yami and completed to becoming a Death Knight.

"Death Knight! Kill the knights that are attacking the village." Momonga ordered.

The Death Knight roared and started to run off in a distance.

eh?

Momonga had a confused expression on his face and whispered to his friend.

"What's the point of a defensive monster leaving the one he's supposed to protect behind?"

"To be fair, you didn't specifically ordered him to protect those girls. You only said to kill the knights that were attacking the village." Yami whispered back.

"You're right"

They both turned to the girls and approached them.

"It looks like you're injured. Drink this." Momonga grabbed the potion from his inventory and gave it to them.

"B-blood?"

Seeing what Momonga overall looked, she felt intimidated and was absolutely terrified.

"I-i'll drink it! So please don't hurt my younger sister!"

"Onee-chan! No!"

The little girl tried to stop the older one as Momonga stood their and sweatdropped for complete misunderstanding.

"They don't trust me at all. What did i do wrong?"

Yami leaned forward and smiled at them, trying to help Momonga and cast away their doubts.

"Don't worry, it's a healing potion. You can drink it."

Injured girl took the potion and drank it but was surprised that her wound healed.

"The pain is gone, isn't it?" Momonga asked

"Y-yes."

Momonga was silent for few seconds before asking a question.

"Do you know what magic is?"

"Y-yes. A pharmacist, who is a friend of mine, sometimes come to the village and uses magic."

"I see. Then this is easy to to explain. I am a magic caster." Momonga then raised his hand and casts a spell.

"[Anti-Life Cocoon]"

"[Wall of Protections from Arrows]"

A large green barrier surrounded the girls around them.

"I cast protection magic on you, you are safe as long as you stay here. Also I'll give these to you just in case."

Momonga threw an item inside the barrier.

"If you blow them, an army of goblins you can command will appear before you. Use the item to protect yourselves. Let's go Yami"

"All right. Take care you two." Yami waved good-bye to them and turned around to leave.

"A-Ano! Th-Thank you very much for saving us!"

"Thank you very much!"

Both girls bowed to them in respect.

"Don't worry about it." said Momonga, without turning around.

"M-May i ask for your names?"

"The name is Yami, don't forget" Yami pointed at himself with a thumb, winking at her.

"My name...? That's... That's right"

Momonga was silent for few seconds before declaring loudly.

"You will do well to remember my name. I am..."

"AINZ OOAL GOWN!"