It's been a week since Willa went to rescue the Demonkin's scouters.

Within the long week, Willa enjoyed her tour. The one who was guiding her is the youth that she saw the first time she heard the news about the scouts' dire situation. The youth's name was Skawn.

Willa was formally introduced as the very first guest for the Demonkin community. Although she got introduced with the words "ah, do not be alarmed or be suspicious of her being a human. She is not after all" by Inaugurath, resulted in him receiving a deathly glare from Willa.

Trouble was, the other demonkins truly believed that Willa was not a human. She was treated as if she were a Goddess. People who passed by her or when she passed by someone, that someone would give her a respectful bow.

At first, she got weirded out, but after a day, she got used to it. Deep down, she felt a little bit narcissistic about how her beauty is indeed worth to be worshipped.

For the second day, Willa's activities were touring the place in the morning after she had breakfast with Inaugurath. The way she was eating was so elegant that Inaugurath ate his breakfast at a slower pace than usual because he's subconsciously staring at Willa.

While on tour, she was accompanied only by Skawn, Inaugurath had to do his chiefly duty  

On the tour, she saw many things, such as a stone building which looks like a Buddhist's temple. She asked Skawn whether that building was indeed as what she thought, but it's actually have nothing to do with their faith. The temple-looking building was just a meeting place to discuss problems which arises in the hideout. 

Inaugurath and this boy (although by age she thought as a boy was actually older) kept saying hideout this hideout that, and it gnawed at Willa's mind, so she asked whether the hideout had a name. She thought, she wanted to give this place a name if it has none.

When Skawn said that this hideout really didn't have a name while he's stuttering and trying to arranged his words better, Willa was about to suggest a name, but then Skawn's answer continued. That this place shall not be named because it might make them feel attached, because they need to readily abandon this place in case it needed to be abandoned. He also said that the Scouts' duty was to searched for new hideout candidates and prepared it as a ready destination for swapping spell.

Willa asked why they need to change hideout when this hideout didn't have an exit nor an entrance and was fully made of hard stone all around. But it shocked her that 10 years ago before they moved in here, their hideout was breached by two of them, they didn't even know where it came from or how it managed to enter where there's no exit nor entrance. When Willa heard that, she became even more confused at the nature of those monsters who looked like the Uruk Hai. 

Besides the building for meeting, she also saw a farm. Which she thought, probably as wide as a whole football stadium. 

She asked Skawn whether they took the fertile soil above and brought it here, but once again she got an answer outside of her expectation.

The demonkin changed the rock properties of the mountain into a fertile soil with their magic. It took all of the population to make the field, and they needed to dedicate all of their mana for this the whole month. Besides that, the soil was also enchanted by magical formula which would make the planted seeds ready to be reaped sooner, plants that needed 50 days could be harvested in only 10 days. The only drawback was the soil could grow nothing if it didn't received any water that was made from a magic. The only drawback was only that. The soil would always fertile, as long as there's mana in the atmosphere, and in Himaseru, mana is overabundance.

Besides the farm there's also something like a henhouse beside it. She felt odd that there's chicken in this world instead of some kind of weird animals equal to chickens' existence. Skawn said there were a thousand or more inside, and everyday they laid eggs for the Demonkin to eat. He also said that chicken's egg was luxurious thing in the world below because there weren't many chicken down there and chickens could hardly breed in there.

The chickens looked like ordinary chickens, but it seems they were actually not. 

In the Demonkin community, most things were done with magic. Probably because Demonkin has enormous amount of mana and control of it more proficient than a dragon.

There were barely anything but residential stone buildings in the hideout. But it didn't mean that they're only for living quarters. 

There were houses that did blacksmithing, tailoring, and et cetera. What's interesting was the thread used for tailoring. It's completely made out of mana.

Willa who came from earth thought that that was absurd and unscientific. Then she remembered that she's in another world with a different set of laws. After all, making a thread from mana is as absurd as making a thread from oxygen.

In Last Imagine 20, there was a material called magic thread. But even that was made from Grizzly Dragon's fur synthesized with many other things and then imbued by mana. At least that's the background setting of the magic thread.

After she toured the place, she would observed people who was training in the way of warriors and mages on the training field near Inaugurath's house until they're done, which is at noon, possibly. Because she didn't know whether it's day or night. It was a hideout in the mountain after all. But it did not mean that the place was dark. There was some short of glowing barrier which encompasses the whole hideout. From what was heard from Skawn, this barrier was also meant for obfuscating the existence of the hideout and everyone within.

Although they're training, most of what the Demonkins were doing was sparing against each other. 

It made Willa eager to participate, but everyone urge her not to do so. 

The Demonkins who were sparing was already doing their best not to be conscious of her staring which made them nervous, if they're to spar with her and be in close contact with her or touch her, they'd have their heart stops. Fortunately the only one training at this kind of time was the youngsters.

Of course, it was preposterous for them to think they could even make a successful attack on Willa.

When her stomach began to feel hungry, Willa went back to Inaugurath's home. She was waiting for Inaugurath.

Inaugurath felt surprised and his heart almost popped when a woman's voice that's so melodic it shivered his spine said "Welcome back".

Then they ate together. 

After that they discussed about what to do to generate more pure mana.

Inaugurath deducted that the mana in the atmosphere which he dubs as "impure mana" was the mana of the planets, which oozes out from the planet's life force, if it had one. 

While the mana that every living being generated slowly and in a small amount before the capacity filled by the impure mana was dubbed as "origin mana".

And this "origin mana" was the only one that could harm those black monsters. 

Willa was being asked by Inaugurath how to increased the regeneration rate, but Willa told him that she herself had no idea. So she lent her an equipments that increased her mana regeneration, yet it did nothing. 

In the end, Inaugurath decided to spar with Willa to experienced and observed how she used her mana instead.

Willa and Inaugurath's spar invited a lot of attention from the population.

After all, the chief of Demonkin, the strongest of the Demonkin was fighting a dainty beauty. And it was their chief who seems to be run ragged.

Their spar was only using martial arts imbued by strengthening magics. Although on Willa's side, she did none of those things and her speed and defense were greater than Inaugurath. Although her strength was equal with Inaugurath who used strengthening.

After the spar, they ate while discussing the how to have more origin mana.

Willa was thinking that, by equating mana with oxygen, she thought to filter the impure mana into an origin mana, just like how air with pollution got filtered.

Thus, it's how she spent her week. Doing the same things.

==================================================================

Present day.

"Yawn...."

Willa woke up from her bed, the bed which was in the reading room of Inaugurath's home.

"Nnggh.... Inaugurath was seriously keeping me all night huh..."

Willa smiled wryly, while she fixed her camisole's shoulder strap that fell down from her shoulder to her arm.

If Inaugurath saw this appearance, he'd be having his face red like a tomato. No, not just him but any men.

But what she meant by him not letting her sleep was because he discussed with her about so many things to purified mana.

It's mainly Inaugurath who talked, because even if Willa could use mana, she didn't know the theory behind it. She just knew, as if it's the most natural thing to do.

In their middle of discussions, Willa was also trying to use magic outside of the Last Imagine's magic system.

But she couldn't do it. There's only mana coming out of her, but not even a simple water spell for drinking was to come out.

She didn't know whether it was due to the side effect of using the Disintegration, or her magic was fixed with the preset from Last Imagine.

So last night, she nonchalantly tried to send her mana into Inaugurath. And, it filled his capacity.

Inaugurath was so excited to know the difference of taking in impure mana and origin mana.

He said to her last night that it felt like breathing a fresh air after living by breathing only smoke.

He asked her to put it in more last night. Willa thought that it was a very poor choice of word, but she decided to be silence about it so that she could use it as a material to tease him today.

"Willa, have you awake?"

Said Inaugurath from the other side of the curtain.

"Yes, I have. Come in, Rath"

With her permission, Inaugurath came in.

What greeted him was Willa with her lower part covered by a blanket, but with the top part being too stimulating.

Her camisole was loose because its size was bigger than Willa's body. Its color was white, but it was made of thin material, thus it's slightly transparent. 

Light pink healthy skin tone, with half-covered soft looking peaks that create a wonderful valley, and two of something that looks like the very peak of said peaks that had colours a bit darker than the whole peaks.

At this time, Inaugurath's eyes were fixed on "target", yet his mind was completely white, blank, shut out, empty, whatever one want to called it.

Willa who realized this, began her acting.

"U..uhm... i-it is embarrassing if you stared at my breast like that...but...if...if you want...as a t-thank you for feeding me....do you want to take a look?"

Willa's expression was of utmost shyness, her hands were grasping the blanket, to cover her breasts, but she let a bit peeked out.

"I amso ry!!!"

Inaugurath went out of the room in a hurry.

"Please dress properly. I shall wait!"

His slightly higher than usual voice was so adorable, thought Willa.

In this case, Inaugurath was quite gentlemanly. Even though it wasn't his fault, because he already received the permission to enter, he still have an apology to Willa for staring at her inappropriately.

It's just Willa that was evil woman.

She smiled smugly while she put on her equipments back.

Once done, she got out and saw that Inaugurath was sitting with his head down.

Looking at his extremely embarrassed face, Willa felt bad for teasing him.

"Sorry, it was too much of me to do that"

Inaugurath lifted his face.

But it seems, Willa's evil tendency still hadn't died down.

"But...I was serious, when I said I do not mind..."

Willa touched Inaugurath'd left hand which was on top of the table.

He looked at his hand with his eyes widened in shock.

"Pfff...fufufufu..."

Willa was giggling when she saw his funny expression. She thought it was funny that for being called demonkin, they're not demon-like whatsoever on the inside.

When Inaugurath heard her laughing, his mouth was open and closing, as if about to say something, but couldn't.

His mind has short-circuited.

"Sorry, sorry...it was indeed so terrible of me. Please forgive me"

Willa asked with a smile, and Inaugurath forgave her by nodding his head, as if his head couldn't do any movement besides doing that.

"So, what are we doing today?"

Asked Willa, trying to changed the atmosphere into a serious one.

"H-hm? Ah.....help me kidnap one of them"

Maybe due to age, Inaugurath also switched his gear pretty fast.

"For experimentation? Is it not bad to do the experiment with one of them in the hideout?"

Said Willa, trying to remind him the danger of doing so.

"No, we should experimented on one in the back up hideout"

"I see...then we should probably do that with just the two of us"

"S-sure.....that was the best way..."

For just a moment, Inaugurath was imagining a life where there were only the two of them. Which he immediately shook away.

He was thinking that Willa might have the passive ability to charm someone. And it was quite potent.

Of course, she didn't have such a thing.

Then, they continued to ate quietly.

==================================================================

Moments later.

Willa and Inaugurath stood on the surface.

Their mission was to snatch one of the black monsters and use it as guinea pig.

It wasn't long before they met a group of them. A group of six.

"Stay here, okay?"

Inaugurath felt pathetic that he had to leave this to a woman. Since long time ago, Demonkin always treated women as subject of protection, that's why he felt pathetic now that it was him which got protected.

They noticed the whereabouts of Willa and Inaugurath.

With frantic movements, they were running closer towards Willa and Inaugurath.

Inaugurath thought that Willa would ran towards them head-on with a sword like she did on the rescue mission, but instead she took out a weapon he never saw before.

"Create XM500, fully loaded"

Willa created a sniper rifle which could be considered as anti-materiel rifle with 10 rounds fully loaded instead.

Due to the Genocider that she had, the process of aiming was almost done in an instant.

The sounds that the weapon made, Inaugurath never heard it before. It was like the sound of thunder, yet it wasn't a thunder. 

What kind of weapon is that?

He wondered.

5 shots hits bulls' eye, all of the bullets shot hit their heads, blowing them into smithereens. Fast and Perfect Headshots.

Now there was only one running towards Willa.

She stored her XM500.

Inaugurath thought she would take out another weapon, but after a while, Willa didn't even take out anything.

Then, she ran towards the black monster.

When she's about to collide, Willa positioned her body perfectly to do a Judo throw.

It's such an absurd sight for a 140cm-ish woman to slammed down a humanoid monster standing more than 2m.

It left Inaugurath speechless.

The monster who got slammed down was stunned, and then Willa took out a shortsword, a scramasax, and quickly cut off all of its limbs.

Even without limbs, it wasn't even screaming in pain. 

It screamed was still the same savage roar when they found a prey.

Willa summoned Mjolnir from her storage, and put it on top of the monster.

It moved around like a fish which got nailed in the middle of their body.

"....okay, I did not think of it before. But how do we confined this thing so that it cannot move? As you know, I cannot use magic right now, and your magic does not work on it"

Standing beside the monster, Willa put out a bitter face, realising the incompleteness of this kidnapping plan.

"....ah..."

It seems that Inaugurath didn't think of it too.

It's impossible to use swap spell along with this monster.

" ............ "

"..............."

Both of them in silence, stating at each other. With a dumbfounded expressions.

"Should we make the experiment site here?"

Inaugurath looked around while he said so.

"How exactly?"

"Well...I could make wall of steel, but even with all of my mana, I don't think I could make a structure which is big enough"

"I see. Then can you make me be the proxy for your spell?"

"Proxy?"

"It means, you are using my mana to cast out your spell. Do you have such magic spell or formula?"

"Aaah...yes, I have. But....."

"Buuuut...what?"

Willa stared at Inaugurath with one of her eyebrows raised. 

"Most parts of our body has to touch against each other..."

"Let us do it then!"

Inaugurath's body jolted for a bit form hearing Willa readily gave him the answer.

For a bit, Inaugurath had an imagination where Willa would hug him from the front, but...

Willa moved behind him, and then climbed his back before finally in the position of hugging him by the neck from the back.

She nestled there just like a backpack.

"Hmm~ it is surprisingly comfortable!"

Her voice that vibrated ever so near his ear, sent shivers down his spine.

He could also smelled her breath. It smells rather sweet. Of course, whether that's true or just his imagination. No one knows.

"Come! What should I do now?"

"O-oh...keep letting out mana, and keep it flowing towards me"

"Roger!"

Inaugurath began to concentrate. Usually he didn't have to do this, but he felt that if he didn't close his eyes and tried to concentrate, he wouldn't be able to make a link with Willa's mana because his mind would wander about inconsequential things.

Willa let out of her mana towards Inaugurath. She felt that, her mana was pouring out a lot from her torso towards Inaugurath's back.

Meanwhile, Inaugurath finally succeeded in making link with Willa's mana. 

He felt so fresh, light, and as if someone whose breathing back to normal after he had an asthma attack.

Then, when he's about to create and mold the steel wall spell...

"Ah, could you make one in a dome shape, with its outer space so smooth it becomes slippery, and small ventilations circling on top of the dome? Also make stairs to the top of the dome. Ah, the ventilations must be big enough for me to go through okay?"

Then, Inaugurath made a dome exactly like how Willa told him.

A 50m in diameter circular dome made of steel was created.

Then, Willa realized...

"Wait...you are using my mana right now, are you not?"

"Yeah?"

"Then can you not make a strong shackle using my mana for that thing??"

"........."

"........."

Both were silence. Again.

But, Inaugurath knew what she meant.

So, he changed the properties of the ground beneath and around the monster into steel, and made chains wrapped up all around it.

Now, it had been completely bound. It was almost unable to move even slightly.

"Haa...haaa...haaa"

Willa was panting, and naturally she was panting near Inaugurath's ear. It roused his symbol of manhood a bit, before he shook that thought and cut off the link to Willa's mana.

"Are you alright?"

"Yes...haah...just need to rest a bit"

Inaugurath thought that it's natural for her to be tired, the amount of her mana he just used was equal to the total amount of mana needed to maintain the barrier for the hideout.

"After my mana has recovered...haah...made another two layers with 50 cm gap for each of them. The inner one filled it with water, then the next with soil"

"Are you sure you are okay?"

"Do not worry, my mana would recover fast enough"

Willa said while sweat drips down from her chin.

Inaugurath just nodded, even though he had no idea what was the point of doing that.

"It would be like oven to be in here without double heat insulation. I do not want to be sweaty so much to the point it made my clothes transparent...or does Rath want to see me in such appearance?"

Still looking tired, Willa smiled teasingly.

Inaugurath could only smiled wryly being teased by her.

As she said, her mana completely recovered in just an hour.

The work of creating the dome was completed in three hours, more or less.

"By the way...what was the weapon you were using before? A staff?"

"Aaah~ this?"

Willa took out her XM500.

"This is called a rifle"

"Rifle...may I have a look?"

Willa handed it to Inaugurath immediately.

When he held it in his hands, it was lighter than a two-handed broadsword.

He observed the weapon, and yet he didn't know how it works.

Willa who noticed what he's about to ask, immediately give an explanation.

"Consider this rifle as the advance form of a bow. With longer range, stronger, and faster. Although its power cannot be adjusted like how you pulled a bow. This is the 'arrow'"

Willa showed the rifle bullets to Inaugurath.

"This small thing?"

Inaugurath wondered how was something much smaller than even a bowgun darts could blow up a head completely?

"Yes. Because it moved with such an incredible speed, it created a much larger impact. There is gun powder inside the bullet which would propelled the tip of the bullet forward"

"Can this weapon be mass produced?"

"Well, it can...but I do not think there is a technology to create even one"

"How about using magic to create it?"

"The outer shape alone, it is possible. But the finer details? I do not think it is possible"

"I see...."

"It is much more efficient to just use origin mana to throw spells or channels origin mana into a weapon if it just to kill that thing"

"True"

"Wait...we forgot to at least close that thing's wound!"

Willa remembered.

"Oh shit, it's about to bleed to death! Heal!"

In panic, Inaugurath tried to heal it.

It didn't work.

"Rath you fool! Use my mana!"

Willa jumped on Inaugurath's back and be a backpack once again.

Thankfully, its endurance was so terrific that even it bled for hours, it didn't die.

"What is this monster..."

Even Willa was confused of its nature.

Both of them felt tired, thus they decided to go back to the hideout and went to sleep.