Volume 10 Chapter 5 (1/2)

Chapter 5 - Big Sister and Little Brother

Part 1

Battles.h.i.+p Ataraxia safely retreated from Thanatos's world. There was nothing they could say except it was fortunate that Thanatos didn't pursue. The cause of that was unclear, whether it was from Nayuta's conversation or possibly the main cannon of Ataraxia, but at any rate the rescue mission was a success.

The rescued students were inserted into new organization and orientation for them was taking place in each place where they were a.s.signed to.

Currently battles.h.i.+p Ataraxia was heading to Odin's world, but it was estimated that it would take a few weeks until they arrived. Valtantis force in Oldium that Grace was leading had gone ahead to Odin world, they should be going ahead with investigation there.

「Odin……if we are only talking about battle ability then she might rival Thanatos……we have to link up with them even for a second faster……」

Nayuta was lying down slovenly on the lounge suite sofa inside Reiri's room.

Reiri who was working on her work desk stopped her hand.

「Then what are we going to do? Against Thanatos, both you and Kizuna using his Corruption Armament couldn't even make a dent on her right?」

「That's so isn't it……」

Nayuta replied listlessly looking totally exhausted.

Reiri lifted her face and stared at the figure of her mother lying down face up on the sofa that could be used by three people.

「What's the matter? You are being awfully docile.」

「Yes……perhaps this is because of summer heat.」

Reiri frowned looking dubious.

Since Nayuta became G.o.d and turned into this little girl form, she often spoke joke and made fun of Reiri and others. Perhaps this time was also like that.

But even while thinking so, Reiri was feeling an atmosphere that was different from usual from her.

――No! If so then what. There is no need at all for me to be considerate to this woman.

「Don't slack off and think up some method to prevail. You intentionally went to meet Thanatos. You got some kind of information from that right?」

「I mostly understand about Thanatos now but……if I reach out my hand to her offering counseling service, I will only get bitten. A child in that age is really difficult isn't it.」

「You really say that shamelessly huh. The way you are talking feels like you actually have experience in raising child.」

With that their dialogue cut off.

But neither Reiri nor Nayuta exited the room.

Reiri was working on her work silently, Nayuta was lying down listlessly on the sofa.

Nayuta took out something from her chest looking as though it was troublesome to even lift her hand. Still facing up, she reached out her hand and put something on the table. The sound of that action made Reiri lifted up her face.

Reiri stared at the metallic capsule put on the table with a suspicious face.

Nayuta's frail voice could be heard.

「This is the trump card to crush Odin.」

The reached out hand looked as though it was trying to lift something heavy while returning on top of Nayuta's chest.

The s.h.i.+ne of the object put on the table made Reiri stood up.

「Is that……Heart Hybrid Gear's core?」

「Yes……a core that I made from zero for the first time.」

「……What?」

The core of Heart Hybrid Gear was originally OOPart of Atlantis world. It was still not understood whether it was the product of super ancient civilization of that world or an instigation from one of the Deus ex Machina.

Even when Nayuta was researching Heart Hybrid Gear, it was nothing more than reusing the already existing core. What Nayuta did was only making so that human's life energy could be used to power up the core in replacement of magic power.

Reiri walked toward the table opened her eyes wide in amazement at that metal piece.

Different from other core, it was emitting a really beautiful radiance. It wasn't an unrefined metal, it had glossy white surface. Blue light was s.h.i.+ning from there. It even looked like a high cla.s.s artistic handicraft.

「I see……so you mean to throw in new battle potential.」

「That core is my greatest masterpiece. Even when compared to other core, I believe there is none that can surpa.s.s it.」

Reiri gulped audibly.

If she was able to a.s.sert that much, then it must really have a powerful spec. The problem was how much ability it specifically possessed and who would use it.

「……But, it has one limitation.」

Reiri clicked her tongue and made a disagreeable face.

「As I thought there is something……so, just what kind of hara.s.sment it has?」

Nayuta answered with closed eyes.

「Reiri, that core is exclusive for you.」

Her mouth opened wide unconsciously and stiffened up.

「It will be mostly useless even if other person install it. It was made with Reiri's biological information as the premise, a core that is adjusted to match Reiri's trait. Most likely it is the first order made core in history.」

「My……exclusive?」

Nayuta opened her eyes thinly.

「In the first place I only have little remaining power, so it's the end with this. What's this? Is this what they called bedridden senior citizen I wonder.」

She made a dry smile with the face of a kindergartener.

Reiri couldn't reply anything to that joke.

Silent time was continuing for a while, before long Nayuta spoke with small volume.

「This is a present for you.」

Cold sweat trickled on Reiri's cheek. Her trembling fingertips picked up the beautiful core placed on the table.

「This is the first time……I receive something from you I think.」

Nayuta was looking up to Reiri with a thin smile still pasted on her face.

Reiri puckered up her face while lifting the core to the room's lighting.

「Moreover you got no sense. Just where you can find in the world a parent that will give weapon as present. Besides, using this is just like a death sentence.」

Nayuta smiled happily.

「But you want it right?」

That was truth.

The guilty feeling of making her subordinate fought. She even saw in her dream, just how great it would be if she could fight herself.

「The problem……the one with the highest apt.i.tude for magic armor in this s.h.i.+p is you Reiri. Making the greatest player using the greatest tool. It's actually also a logical and rational decision.」

「Me……huh」

「Besides……if there is Kizuna then you won't die. Even if you install it, it's fine if you use it only to protect yourself. If you have that, then you can become G.o.d or demon you know? Even if for example everyone else died, perhaps you and Kizuna will be able to survive.」

「Wha……saying screwed up thing like――」

Reiri swallowed back the words she was about to say.

There was a doubt that she had been feeling since long ago.

But she couldn't bring herself to ask it, speaking out loud that question itself was unforgivable.

However,

For some reason,

She wanted to voice that doubt very much so.

「You……」

Reiri stared at the core that was created for her sake. Its surface, had really detailed and cute decoration applied there.

Perhaps, that was a completely unnecessary decoration.

――She shaved her life even if just slightly for something like this?

「You……since you turned into that form」

The question lurking inside her heart, was naturally rus.h.i.+ng out from Reiri's mouth.

「Human heart and emotion, were born inside you weren't it?」

However Nayuta only squinted her eyes and smiled.

Part 2

In an indoor sports ground inside battles.h.i.+p Ataraxia. In that s.p.a.ce that was as big as a gymnasium, there was a giant block stacked up. It was an object that was like four normal Love Room being connected. It was placed at the center of the sports ground. Around it there were measuring instruments, machineries used for all kind of adjustment, external cooling unit, battery, and so on. All those were placed surrounding the box with wiring extending in between.

Kei took out her keyboard and began inputting text.

『This is the experimental device of the new Love Room. It's official name is not yet fixed. Codename Chronos.』

「……So big.」

It was really contrastive with the portable Love Room used the other day. Kizuna thought if it would be possible to transport this if it was this big.

『The development concept of this is greatly different from the portable Love Room used in actual combat the other day. This is still an experimental unit, but from the beginning it's also not a.s.sumed that it will be used by moving it around. Chronos is being developed by only prioritizing adding the required function.』

「Required function?」

Kei's gla.s.ses s.h.i.+ned.

『The power to surpa.s.s time.』

「Eh……?」

Kizuna doubted his ear.

『The function to change the body's external appearance that was in the middle of research from before. The implementation of that was completed.』

「Before this, is it what I heard when I did Climax Hybrid with Valdy……」

However what use it would have after this far?

Kizuna raised his eyes at the system of giant Love Room that didn't exist until now.

「So a system this big is necessary for that function……but, it got completed really quickly isn't it?」

Kizuna thought that if it was with this, then perhaps there would be no need for him to dress as girl in front of everyone like before. Thinking that, his feeling became somewhat resentful.

『Professor Nayuta's power.』

「Eh? Aa, now that you mentioned it, Kaa-san wrote the program or something.」

『It's impossible to develop it with this speed if it's me. In addition, it doesn't mean that this is using G.o.d's miracle. Professor Nayuta carried out the development work really normally, just like how human would do it. And then Love Room that can even be called as ultimate was completed.』

Kizuna once more stared fixedly at the toweringly gigantic Love Room.

「Is this, really……something that amazing?」

『Inside this is a world that transcended reality. Things that is practically cannot be done, impossible thing, thing that cannot happen, can all occur. You won't understand whether it's dream or reality, or whether that reality really occur or not. What is inside this is different from reality, it's a different world.』

Kizuna was unable to understand the specific mechanism and significance regarding this Love Room. But, he was at least able to understand that developing this was difficult.

『I already understood from before, but with this I was made to realize once more my difference with a genius.』

「Even s.h.i.+kina-san is also genius enough.」

Kei shook her head left and right.

『I was called as prodigy since I was a child but……even a genius is just an ordinary person when they pa.s.sed twenty, that's something that is often said. In the first place it's a problem of what I was compared at.』

The face of Kei who was always expressionless changed to look like it was brooding somewhere in it.

『From the beginning I understood that there is existence that my hand cannot reach. But, I saw a dream, that if I worked hard, perhaps I will be able to get closer even for a little. But, a dream is a dream. I believe that it's fine if just do my own research……but, when it was thrust in front of me that such person exist in this world, I thought, is there any meaning in anything that I do.』

Kizuna only knew the figure of Kei who was always advancing development dispa.s.sionately. And then he arbitrarily though of her as an owner of terrifyingly tough mental strength from that image. Due to that Kizuna could only be bewildered when she suddenly showed him her weak figure.

「Such thing……all this time it's thanks to s.h.i.+kina-san that we――」

「Kizuna, you are here already.」

The door of the sports ground opened and Reiri came in. An attaché case that was s.h.i.+ning silver was dangling from her hand.

「Nee-chan……that's?」

Reiri lifted the attaché case on her hand and showed it to him.

「Yeah. It's a new core.」

The thick door of Love Room opened along with the sound of vapor getting jetted out.

『Reiri, the preparation is finished already.』

「Got it. Let's go Kizuna.」

「Ye, yeah.」

Kizuna followed behind Reiri and entered inside the Love Room. Then behind them the door closed with heavy sound.

「The inside……is unexpectedly normal.」

Even though the outside appearance was large, the s.p.a.ce inside wasn't that different.

「Yeah. The frame's largeness isn't for more s.p.a.ce, but for the sake of the added function.」

「For the sake of a function that change the external appearance is it……but, what s.h.i.+kina-san said, bout the power the surpa.s.s time, what does she mean by that?」

Reiri manipulated the control on the wall while answering.

「――This is what it meant.」

When Reiri's finger pushed the confirmation b.u.t.ton, Kizuna's field of vision became riddled with noise. And then he was a.s.saulted with a sensation that was similar with dizziness.

It was a severe sensation even more than the usual Love Room. His whole body was paralyzed and the sensation of his body became diluted. He was attacked by anxiousness as though his body was going somewhere far.

――What? What happened with me?

His hand reached out to rely on something. His hand was groping around like a drowning man desperately trying to get a hold of something.

「Kizuna.」

He heard such calling voice.

It was a voice that really rea.s.sured him. A voice that made him believed unconditionally that he could trust this person.

When his hand reached out to the direction of that voice, something warm and soft was welcoming his hand. He was embraced with two hands and his face was buried into something elastic with a thickness of a futon.

That sensation granted instinctual sense of security to Kizuna.

「……How is it? Has your awareness turn clear?」

It seemed that Kizuna was closing his eyes without him noticing it. When he opened his eyes just like he was told, his was being buried into a sailor uniformed chest.

「……Eh?」

He remembered that design of collar and ribbon. And then above all this aroma. Amidst the mix of soap smell and sweet aroma, he could faintly smell an adult fragrance that was like perfume, it was a fragrance that he loved and made his chest rumbled.

「Nee-chan?」

When he pulled away his face and looked up, there was the smiling face of his big sister there.

However he felt something out of place with that face.

It was unmistakably Reiri. However, he felt like her face was somewhat returned younger. She had adult face and figure since in the past, so there wasn't any large difference. If he was forced to say, then perhaps it was because of this sailor uniform's fault?

A collar with blue and yellow line added with green colored ribbon. That breast was pushed up from below forcefully that the navel was visible. Below was a blue pleated skirt.

――If I remember right this is Nee-chan's high school uniform. At that time I was elementary student. My height is just around this area――!?

Kizuna looked down on his own figure in panic.

He was wearing T-s.h.i.+rt and short pants. Excessively unreliable thickness and length could be felt from legs. And then the floor was near.

「No way……-!」

When he looked around the room, a familiar and also nostalgic sight was surrounding Kizuna. It was the living room that Kizuna lived at when he was a child. The sofa, television, and also the table were all just like in the past.

However, the room felt really vast. The height of the ceiling and door, the size of every single furniture, they all made him felt for real that his body had become small.

「This place is……our house at megafloat Tokyo.」

「Correct. How nostalgic.」

「Come to think of it……when I first entered Love Room, it was this room that was shown for demonstration……」

Reiri responded looking a bit embarra.s.sed.

「Aa, I couldn't think of any other sample that time.」

Kizuna stared once more at the figure of his big sister wearing sailor uniform.

「What she said about surpa.s.sing time……it means this?」

「Everything is for the sake of this objective.」

Reiri's eyes moved toward the attaché case placed on the table.

「Install the core into me here. It seems……this will, provoke my……excitement, and immoral feeling……the most.」

The more Reiri's speech was nearing the end, the smaller and more subdued her voice became. Reiri's cheeks turned red in shame and she averted her eyes while murmuring.

「This is for the sake of obtaining the strongest spec. I'm reluctant but this cannot be helped. You too……must be, feeling complicated but, if you can do it……without feeling it's detestable, that, I'll feel happy.」

Those words felt like they were said from far away.

「I, I'm not thinking it detestable……there is no way, I'm thinking that.」

His tongue couldn't form word well. The beating of his heart couldn't slow down since some time ago. His cheeks were burning, even himself understood how blood was rising to his head. Kizuna was feeling an excitement that he had never tasted until now.

Reiri suddenly directed her eyes to Kizuna and made a bit surprised face.

「……It seems, that you have become in the mood for it huh.」

「Eh? Waah!」

There was a large tent on the front of his pants.

「Kizuna, come over here.」

Reiri smiled and turned around to the washroom with the fringe of her skirt fluttering. Kizuna honestly followed behind her. The washroom doubled as the changing room. There was the bathroom at the other side of the blurry gla.s.s.

「It has been a long time since we entered together.」

「Ye, yeah.」

Reiri opened the fastener at the side and took off her sailor uniform's upper clothes without hesitation. And then she pulled down her skirt and was left in only her underwear. Her white underwear without any decoration was something that Reiri at that time often wore. That underwear that Kizuna sometimes happened to catch sight of was something that made his heart beating fast.

When she took off that underwear too, Reiri's splendid body appeared in front of Kizuna. Her large breast protruded out like rocket and it was shaking in front of Kizuna. Her body was returning to when she was in her high school period which might cause it to become more or less smaller. However perhaps because Kizuna himself also became small, it instead looked even bigger.

「What's the matter? Can't you undress by yourself?」

「N, no. I'm fine here.」

He replied so, but Reiri gripped the fringe of his T-s.h.i.+rt and pulled it up. Kizuna also obediently lifted both his hands straight up and let himself got undressed. And then Reiri unb.u.t.toned his short pants before pulling it down until his ankle in one go.

Reiri then put her hands on the last piece of clothing and pulled it down gently. When the briefs was lowered until the thigh, Kizuna's thing leaped out energetically from inside.

Reiri chuckled when she saw its appearance.

「Looks like it got turned into child form properly.」

Kizuna's face got even redder.

「UWAAAAA! Even though it's fine even if this kind of place doesn't get returned too!」

However it was only its size that was close to the present. That barely let Kizuna retained his dignity. Reiri looked fondly at such Kizuna.

「Then, let's enter.」

「……yes.」

Reiri took Kizuna's hand and they entered the bathroom. And then she turned on the hot water from the shower and adjusted the temperature while bathing under it.

「Yosh, it's fine now Kizuna.」

Next she showered Kizuna. The pleasantness of the hot water, and the strange reality of him entering bath just with big sister made him felt like his thought circuit was getting screwy.

Certainly there was time when they entered bath together when he was a child. However the implication in this current situation was completely different. Right now they were entering bath together with the objective of doing install to his big sister.

When he thought that, Kizuna's thing twitched by itself. Reiri gulped seeing that.

Reiri's heart throbbing became violent.

She helplessly wanted to touch it.

She gulped her saliva unconsciously.

――That's right. As expected I have to take the lead as the big sister.

She resolved herself so and reached out her hand at Kizuna's groin.

「This place, has to be washed to.」

「Uaaah! Ne, Nee-chan-」

Reiri's hand touched Kizuna's thing. Her slender fingers were gently holding it and moved up and down.

「Uh! Ku」

「Nn……does it hurt?」

「N, no……it's not that but, that, the tip is still covered……」

Reiri made an understanding face and kneeled in front of Kizuna. And then, she licked Kizuna's tip briefly with her tongue.

Kizuna felt like electricity was running through his tailbone until his head.

「Ne, Nee-chan.」

「If something is not done to this, it will be a hindrance in the install. Because, I'm the adult I'll do it so……don't worry.」

She smiled at Kizuna rea.s.suringly and then held that tip into her mouth.

「-aaaa……!」

Reiri licked around inside her mouth to swell it up. And then she seized the root by making a ring with her fingers and she gently rocked back and forth.

「Aah, Ne-Nee-chan-!」

Kizuna could do nothing except writhing from the intense pleasure. Stimulation was attacking mercilessly from the part that was more sensitive than usual. Shudders were running through his spine.

Reiri inserted her tongue at the gap behind the skin, she was making that part getting accustomed while slightly adding strength on her fingers. Reiri was gradually making the tip of Kizuna that was hiding to show its face.

And then in one moment, the stuck part got smoothly surmounted.

「tsu! Aaaah!」

Kizuna's waist trembled. Strength entered his feet and his toes stretched tensed.