Long Xingyue remembered what Ryuu did - as if pushing the sphere from all sides at the same time until it became very small and tried doing it herself. But...

.

.

.

*swish* *bang*

When she came halfway, she lost control of her Spirit Power and it exploded.

Long Xingyue: "Eh...?"

Asura Ryuu: "Hm?"

Long Xingyue's eyes became teary and she grabbed Ryuu with both hands shaking him while saying: "B-bro, why can't I do it???"

It was already the tenth try to do it which failed and that reflected on Long Xingyue's childish mind.

Long Xingyue: "Why can Brother do what I can't? How am I going to call myself an elder sister if I can't be better than you? Why???"

Asura Ryuu: "Calm down, it will be fine. I didn't know how to do it at the start either, but you saw just how far I can go now. The further you compress it, the more it's resistance and pressure rises exponentially."

Xingyue strengthened the hold on Ryuu's arms and looked at him with half-tearful eyes while the other half contained pure anger.

Asura Ryuu: "Um... Sis? Why do you look angry?"

Long Xingyue: "Yooouuuuuu!!!! Can't you explain it without using those strange words, what does 'resistance' and 'exponentially' mean???"

Asura Ryuu: "I can't use other words, I can only teach you step-by-step what do they mean."

Asura Ryuu: "Try poking your finger in the soil without any internal energy."

Long Xingyue: "What's the point of that, I'll just dirty my fingers."

Asura Ryuu: "There's plenty of water here, you can just wash them. Try it and I will teach you what the term 'resistance' means."

Long Xingyue: "... AGAIN!"

Asura Ryuu: "What?"

Long Xingyue blushed slightly while the tips of her index fingers touched and she looked left-right with her head down in embarrassment: "What does 'term' mean?"

Asura Ryuu: "What's that."

Ryuu asked while pointing at the waterfall.

Long Xingyue: "It's a waterfall."

Asura Ryuu: "Waterfall is a term, it's just one word which means one or more things, I will explain it more when we have the time but for now take is as the separate words are separate terms and each has its own meaning and that meaning is called a definition - how it appears, what does it mean, what are some common traits and so on. It may be a bit confusing but you can do it!"

Long Xingyue: "Oh, I get it now! Thanks, little bro, hehehe."

Ryuu thought: "Did she just understand what I explained only once? Damn. That's a scary ability..."

Asura Ryuu: "Nevermind, poke the finger through the soil."

She did as she was told and after a certain point, she couldn't go further.

Ryuu then told her to poke a finger in a rock, which of course failed because of how hard the rock is.

Long Xingyue's pouting expression was pretty funny: "Muuu... why can't I do anything that brother says... It's not fair bro, you are asking your elder sister to try weird things that can't be done... You're bullying me too much!"

Asura Ryuu: "... She knows her way with words, alright."

Asura Ryuu: "Now, now. Don't be like that. The resistance is what you felt when you tried to poke the rock - something was blocking your finger, right?"

Long Xingyue: "Oh! It's the same as when I poked too deep into the soil and couldn't go any further right?"

Her eyes sparkled because of the fact that she may potentially have guessed what her brother wanted to say and she made an excited expression with her entire body positioned in "expecting" stance with sparkling eyes full of stars.

Ryuu looked at her eyes carefully and lost himself for a moment, but he quickly recollected himself.

Asura Ryuu: "Right. So smart... can I even be your teacher anymore..."

Long Xingyue: "Of course you can, brother has to teach me lots of things in the future, hehe."

Asura Ryuu: "God... I know she doesn't say such things on purpose but... DAMN! It's misleading as hell!!!", Ryuu thought.

Asura Ryuu: *cough*, *cough*, "Now then, let's explain the Term 'exponentially'", Ryuu said while emphasizing both the 'term' and 'exponentially'.

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Long Xingyue: "Oooh!!!"

Asura Ryuu: "You know how it became harder and harder to penetrate the soil and it wasn't slowly increasing but rather it suddenly became so much harder, that's what you call the exponential resistance growth."

Long Xingyue: "What does..."

But before she could ask, Ryuu cut her off: "Growth means when something is increasing or getting more and more, like when you grow up you get bigger."

Long Xingyue: "Ah, sorry. I'm so dumb that I actually asked what I already knew."

Asura Ryuu thought to himself: "Well, I had the same troubles back in my world because of all the formalities so I can't blame her really..."

Asura Ryuu: "Now then, when you understand that, the next thing is..."

Long Xingyue looked at Ryuu and traced his finger which was pointing at the waterfall.

Asura Ryuu: "We go below that and you do what I showed you in order to compress your Spirit Energy while I will have to form my own core to do so."

Long Xingyue: "Um... can I ask something?"

Asura Ryuu: "Go ahead."

Long Xingyue: "How do you know so much?"

Asura Ryuu: "Hehe, I will tell you if you beat me when we finish with this test."

Long Xingyue: "Really???"

Seeing how excited she became, Ryuu only nodded with a smile and took his clothes off.

But when he took off his pants off, he remembered... "Crap, my sister is looking, how the fuck did I forget..."

He turned around and saw that Long Xingyue was fully naked as well and wasn't acting embarrassed or anything - she acted as if it was normal.

Asura Ryuu: "Well, nevermind..."

Ryuu took a step below the smallest of the waterfalls - a hundred meters in height and as soon as he did, he got plastered below the water level.

Asura Ryuu: "Gahhhhg... it's so pressuring, I feel like my lungs are gonna explode here... But I like it."

Long Xingyue entered without any problems because she used her Spirit Energy but she didn't hold out longer than five minutes because she used her energy excessively and ran out of it.

Ryuu didn't even have the energy which meant he was resisting the waterfall with his own body.

Long Xingyue looked at Ryuu who didn't have the Spirit Energy coating around himself and told herself: "If my younger brother can do it, I can do it too!"

And thus, a petite feminine figure sank below the water level while her body and bones were aching and screaming in pain.

Long Xingyue: "Agh! This is so damn hard, how did Ryuu climb out of the water under such pressure. I can't even move... Gahhhh!!!"

.

.

.

Several days later, two small figures sat cross-legged under the hundred-meter big waterfall - one female and one male but neither of them older than six to seven years.

Both of them were resisting the waterfall with pure will and strength of their bodies which were already painted in red at every place where the water touched, that was how enormous the force of such a waterfall was. It may not be anything serious for a regular grown-up man, but we're talking about six-years-old children here.

Long Xingyue: "How cool, I can fit more Spirit Energy in my Spirit Core if I compress them even more. Can I use the power of the next waterfall to compress it even further? What about Ryuu? Did he make his own core? Oh, wait... does he even have a cultivation technique? Father told me that cultivation techniques are really hard to find unless you join some organization and you can't cultivate far without them..."

Long Xingyue's disturbed state didn't allow her to cultivate anymore and she slowly came out of the waterfall and came in front of Ryuu to check on his current state.

"It's only normal for elder sister to care about her younger brother, isn't it?", she thought.

Long Xingyue: "Why does it feel strange when I stare at the naked Ryuu like this, it feels as if something would devour me if I came any closer..."

Long Xingyue observed every part of Ryuu carefully but had no way of knowing that she was also being observed by Little Dragon in her spirit form who came out to see the changes through which Ryuu will go when he forms a core because it was the time for him to do so.

But Long Xingyue's curiosity ... was very strong.

Long Xingyue: "Why does Ryuu have that weird thing, I don't have that..."

Long Xingyue: "Hmm, maybe it's because I'm a girl, who cares anyway. I'll ask him sometime."

-----

While Ryuu was being observed by the two, he was entirely in the depths of meditation trying to sense the world inside himself.

At one point, he felt something strange and grasped onto that feeling with all he could and then he forcefully tried to expand the feeling to every part of his body, but couldn't do it.

Asura Ryuu: "What am I doing wrong here, why can't I expand this little Spirit Power?"

He asked himself again and again and couldn't come to a conclusion then an idea manifested itself - what if, let's say, that wasn't something he was supposed to expand but rather it served as the 'absorption point', to put it like that.

Ryuu tried going by that path and sure enough, he felt a thin stream of Spirit Energy flowing towards that point.

Asura Ryuu: "What is this thing? I'm sure it should be the 'built-in' core, but can I move it around my body? Let's see."

As always, Ryuu had an entirely different way of thinking.

Asura Ryuu: "In novels, the core usually is formed within the body and loads of times someone can crush that core - which means I have to somehow hide it, and I've got a pretty good idea of what to do, hehehe."

Ryuu connected his Spirit Sea which acted as a separate space formed within his soul. The Spirit Sea isn't a physical organ but something acting as a bridge between the soul and the body and it was hidden in the fourth dimension. The thread of Spirit Power that Ryuu compressed as much as he could, was wrapped around the small core and Ryuu slowly led it inside his Spirit Sea. He wasn't sure whether he could succeed in doing this but when he did, Ryuu instantly became happy.

Asura Ryuu: "Hahaha, now I don't have to worry about my core being physically crushed, only if someone with a lot stronger Spirit Power attacks my Spirit Sea can they have the possibility to damage it. But just in case let's hide it further somewhere, hmm..."

Ryuu looked around in his Spirit Sea and saw the ten dragons orbiting around the black hole in the starry colorful sky and he got an idea where to form the core.

Ryuu coated that little core even more in his Spirit Power with the help from the abundant Spirit Power below himself which made up for the entire Spirit Sea and raised it to the black hole.

Asura Ryuu: "Now then, the power of space should be used here and I need master's help for that."

Ryuu managed to somehow keep the core at bay and returned his consciousness to his body.

-----

While Ryuu was entering the initial phase of migrating the core to his Spirit Sea, Little Dragon could still feel that speck inside him which she felt every time she scanned his body with her Spirit Power. But all of a sudden, Ryuu lost his aura and escaped her Spiritual perception. She could still see him and all but she couldn't feel him with her Spirit Power like she would feel a Spiritualist. It was as if he was just a normal human with no Spirit Energy at all.

Little Dragon: "Did something go wrong?"

She began worrying about him but it didn't last long as she heard Ryuu's call in her mind "Little master, come inside the Spirit Sea, I need your help."

Little Dragon: "Heh, so he can't do it without me after all. Hmm, hmm. That's good. He should rely on his master more."

She entered his Spirit Sea as Ryuu told her and when she noticed the core being suppressed from bursting with all that Spirit Power, she couldn't find the words to describe the scene before her.

One needed a lot of Balls to try putting something so volatile inside their own Spirit Sea because, if they weren't good at controlling and suppressing the core, it could destroy the entire Spirit Sea and they would remain a soulless shell.

Little Dragon: "This brat is the craziest thing I ever saw..."

Asura Ryuu: "Oh, hi. What's up?"

Little Dragon: "YOU! How the Hell can you be so relaxed while suppressing That Thing! Do you know that if it explodes all of us are going straight to hell?"

Asura Ryuu: "Well that doesn't sound so bad at all, hehe."

Little Dragon: "What do you mean, you sick fuck... do you wanna die so bad?"

Asura Ryuu: "So cold, I meant if I'm going to hell with such a beauty like you then it may as well be heaven, hehehehe."

Little Dragon didn't expect that sudden attack and her embarrassment became pretty visible thanks to her pitch-black skin.

Little Dragon: "Hmph. You little... What did you need me for?"

Asura Ryuu: "How strong is your space law?"

Little Dragon: "Oy, what are you trying to do... Oh hell no!!!"

Asura Ryuu: "C'mon, help your boyfriend out a bit, or do you really wanna go to hell with me that badly, hehe."

Little Dragon: "That... Are you certain that Thing won't actually destroy your energy core?"

Asura Ryuu: "Yup. If you can transfer it right in the center of the black hole, it won't get crushed or anything. Besides, I could do it myself as well but I won't be able to wake up for some time from exhaustion if I had to resist the suction of the black hole."

Little Dragon: "... Fine, tell me what to do."

Asura Ryuu: "Read my mind, it will be faster."

Little Dragon: "Haaaah... okay."

Ryuu felt that his Spirit Sea is slightly moving which meant it was ready to protect the pathway to his soul even from his Soul Spirit which was the part of him already. Ryuu couldn't help but marvel the magnificence of life - whoever made the humans made sure that they wouldn't be able to destroy themselves unless under extreme conditions. It required a lot of planning and designing, which to Ryuu who was an objective and creative thinker seemed very 'cool'.

The core which was coated in Ryuu's Spirit Power disappeared suddenly and all of a sudden, in the middle of the dark black hole, a light appeared - a pure white light.

Asura Ryuu: "Heh, that's an interesting reaction. The light which could escape the black hole actually exists, hehe."

Ryuu looked at the ten dragons circling around the black hole and the one which resonated the most was the black-green dragon which made Ryuu look at the side where Little Dragon stood.

Little Dragon: "Done. What next?"

Asura Ryuu: "This."

Ryuu gestured with his hand, making a grabbing motion and then suddenly slid his left hand through the air as if he was splashing a wave to someone which manifested ten blades made purely out of Spirit Power fly towards the black hole - to be precise, to the core while his other hand which was 'grasping' made the ten dragons dive towards the black hole. Meanwhile, the blades untied into one and became a speck of Spirit Power compressed to the fullest.

When Little Dragon saw what was going on, her eyes widened in an instant. But neither could she stop Ryuu from doing what he wants in his own world nor did she have any courage anymore. She could only believe him as always.

Ryuu did an unimaginable thing again - the speck of Spirit Power was actually used to make a cutting edge with which he cut the core in ten equal parts while the dragons that dived towards the black hole swallowed each part and entered the black hole. However, an unexpected happened. Each dragon had his entire body illuminated by the little core which shone from the point inside its head and the ten dragons inside the black hole actually glowed with a radiance that escaped the suction of that enormous celestial body.

Ryuu didn't find it interesting to only have the dragons inside the black hole, therefore he also widened the accretion disc and once again colored it in different colors.

Little Dragon could only close her eyes and try to remain calm in this situation. Her true Spirit Form was trampled with but she believed in Ryuu and didn't resist, the same way in which Ryuu didn't resist her deep-scan.

What Ryuu didn't know was that allowing someone to inspect your body with Spirit Power all the way to the depths was actually as if you gave yourself to them - they could end your life at any given moment only by crushing any of the organs inside you.