9.Devil Magic Introduction.

[A/N: I removed the part where Shishi used his powers to make the feather float in the previous chapter and made this chapter explaining demonic power and skills. I will fully edit ch 8 later. But for now enjoy this chappy]

Chakra and Demonic Power, these two are part of the world but unlike the former, that is present almost everywhere, the latter is entirely inherited. Meaning it cannot be obtained through any secondary method. The only beings capable of using it are devils, the creatures of sin. This makes demonic power an exclusive element of the devils, similar to how the Sharingan is exclusive to the Uchihas.

Where am I going with this you ask? Well because, unlike chakra which could be increased through countless methods, the only way to increase demonic power is through intense physical training. Some devils are born with high demonic power like me, while many low-class devils are born with measly amounts of demonic power. 

But the problem arises when you try to increase the amount of demonic power in your body. I might have a lot of it in my body, but nowhere near enough to fight those catastrophic beings. Even for devil geniuses like Sirzechs and Ajuka, it took centuries to reach that level but I don't have that much time. I might have a long lifespan but as the Primordial said, it isn't long before the beginning of the end. So I need to find a way to get stronger fast. I must find a bug in the power system.

"Demonic power is very easy for devils to draw." My father's voice snapped me out of my thoughts. 

"Unlike other beings who need to draw these energies from an external source. Us devils are born with demonic power, so using it is very simple." My father explained.

He is correct about being born with demonic power but that isn't necessarily a good thing, because this makes it difficult to break through to higher tiers. Demonic power gives a head start but it is extremely slow in the later stages.

"Now in order to be able to cast demonic spells, all you need is good imagination and control. Imagination allows in the formation of spells and control allows us to maintain the spell." Father explained forming a small sphere of demonic energy. "Firstly relax your body and let the demonic power flow freely through your body."

I did as he said and allowed the demonic power to flow freely inside my body.

"Now if a devil who is of Ultimate-class or above lets his demonic power run freely, the result would be catastrophic. But since your demonic power is still of a low-class devil, it would not cause any problems. Once you get used to using demonic power, letting it run freely is not needed. You can easily draw the amount you desire." His explanation made sense to me because if someone like Sirzechs was to release his full demonic power, the entire planet would be destroyed. 

"Now imagine some of your demonic power leaving your body and taking the shape of a sphere."

 I followed what he said and surprisingly it wasn't very difficult to shape my demonic power. Well, at least that makes up a bit for the slow power increase.

"Cut the supply of demonic power or the size of the sphere will keep on increasing. But keep maintaining the shape, even after cutting the supply." 

Creating the sphere was easy but maintaining the shape was more difficult than expected. But this was totally different from the Rasengan since the demonic sphere did not need rotation to maintain the shape. It required focus. After a bit of struggle, I was finally able to stabilize it.

"Now throw it." He said.

I nodded before throwing it towards one of the test dummies.

The dummy instantly vaporized.

"That went better than expected." Father mumbled before continuing. "Creating a sphere is one of the most basic uses of demonic power. So, I want you to create various shapes from Spheres to Spears."

"Alright." Using the same method but instead of a sphere, I imagined a spear. And as expected, it was a success.

After that, I tried various-shaped attacks before my father said.

"Very well, you did great. Now we move onto the next stage, that is using your magic for supportive spells." This made me raise an eyebrow and ask.

"And what kind of spells are those?" 

He smiled before replying. "Enhancement and illusions."

Illusions are basically genjutsu but they are made through the use of demonic power or mana whereas genjutsu is chakra based. As for enhancements, are they similar to the eight gates?

"We will start with enhancements." Father said. "Enhancement is a basic spell that allows us to increase our ability to do certain actions. It includes both offence and defence. Through the use of enhancement, you can increase your speed, strength, senses etcetera."

So it is basically eight gates but we can choose which ability we want to improve.

"Let me give you an example. If I want to increase my speed, all I need to do is to allow the demonic power to gather near and around my legs while also increasing its flow inside them. This allows the leg muscles to strengthen which gives us fast reflexes." He said strengthening his legs. 

"Look carefully." He said before taking a huge leap towards a dummy and kicking it with his enhanced legs. 

The dummy exploded the moment his leg made contact with it.

"You can use enhancement for any part of your body, including the brain. It will allow you to think at four times the normal speed. But I won't suggest that unless it's absolutely necessary. Because once you do that, the recoil will exhaust you to the point that you won't be able to move a single muscle for hours. So think twice before using that." 

I nodded at that. As much as the ability to think four-time faster sounds impressive, the recoil is almost scary. This is definitely a last struggle move.

"Now I will show you how to cast illusions." He said cancelling the enhancement.

"Illusion magic despite sounding like a complex branch of magic is not really that difficult. Well, at least not for devils. Similar to angels who can cast light and holy magic with almost no effort, us devils can use illusion magic with ease." Father's explanation made me remember that I need to find a way to resist light and holy magic until my bloodline purifies.

"Illusion magic directly affects the brain of the targets, making them hallucinate. You only need to picture what you want to show them and let your demonic power affect them." My father said before closing his eyes. "Here, let me show you."

Saying this he used his demonic powers. I felt a slight pang in my head signifying that I was under an illusion. This ability is an Uchiha exclusive ability that makes us resistant to average genjutsus. 

But what was out of my father's calculation was the Sharingan. The moment my brain detected that I was placed under an illusion, my onyx eyes turned crimson red with a comma-like swirling symbols forming around the pupil. Once, the Sharingan was activated, his illusion shattered like glass and his eyes widened.

This is a passive ability of the Uchihas. It allows us to be resistant to normal genjutsus as it activates without our intervention. The downside is that it is almost impossible to control it's activation.

And the Sharingan's activation now was outside of my control. 

W-what was that?" Father asked, staring me in the eye. I had already deactivated my Sharingan by then. Activation was out of my control but the deactivation wasn't. 

"Is something wrong, father?" I asked.

"Your e-eyes… they turned red for a moment and had a weird pattern on them." He said, still inspecting me.

"I don't know what you are talking about?" I said tilting my head to the left. 

"How were you able to break my illusion?" He asked curiously.

"I don't know, the moment you used the illusion, I felt a slight itch in my eyes and felt the world slowing down and before I knew it… your illusion shattered." I replied calmly.

"Did this ever happen to you before today?" He asked, sounding a bit concerned,with a perplexed look.

"When I am training and something is beyond my reflexive capacity, I feel the same itch in my eyes and time seems to slow down for me by a few moments." I replied with a half-truth. Sharingan does allow me to react to movements faster but its activation is under my control unless... I got overly emotional.

"Why didn't you inform me about this before?" He asked while raising an eyebrow.

"I thought this was normal and it was part of my devil ability." I replied trying to sound my usual self.

"I think we should stop our training here for today. You should rest, and the next time it happens. Inform me immediately." He said in a serious tone. "Layla." He summoned my maid.

Instantly our family crest appeared on the floor and Layla appeared before us. 

"Yes, my Lord?" She asked.

"Take Shisui to his room and inform me if you feel anything off about him." He said and teleported away even before Layla could reply.

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Well, that went… as expected! I felt a small smile creeping up my face. 

[A/N: Thanks for helping me with the chap Geir!!!]