Prologue

In the near future, in Japan in the year 20XX AD, humans and demons exist all around Earth, hidden away from the public eye for the most part.

Due to the nature of demons, the human government has sent special units named "Taimanin" to combat them.

The demons are also highly lustful and cruel beings, although some can control these aspects of themselves.

The Taimanin are a large group of female kunoichi with demon blood running through their veins, making them much stronger than the average soldier and highly effective in dealing with demons.

However, many of them (both weak and strong) have fallen into depravity, corruption, and even enslavement.

They can be overwhelmed by the powers of a demon, trapped in situations that bring immense pleasure, exposed to drugs and hypnotic spells, and many other scenarios that ultimately lead to their downfall.

To make matters worse, they can be forced to fight fellow Taimanin who have been enslaved or corrupted by not only demons, but also by humans with high political ranking, and even those who are Witches, Magicians.

But this story is not about them. It is the story of someone else.

This is the tale of a man who carefully conceals himself in the shadows, meticulously planning each and every move, believing that this world is the perfect stage for his fantasies to come true.

By "come true", it was literal.

He's in a world where demons exist under the shadows, living in a futuristic world as a magical ninja, and other stuff that will fulfill his formerly delusional fantasies, which now became real!

He possesses an immense will and holds tightly to his own beliefs, continuously striving to become stronger and obtaining knowledge until he deems himself capable of fighting against these demons from the shadows.

Clad in a large dark violet coat and a customized bodysuit made of Liquid Metal fused with Demonic Materials, he is able to manipulate it using his Magical Energy.

He created this suit himself in the midst of raiding a demon stronghold, while also discovering and deciphering a mysterious book.

Safe to say he had been forced to see stuff happening to women that are genuinely shown in hardcore R18 porn animations.

It didn't surprise him much, but dear, seeing it in person had given him some disgust.

"Urgh, that sounded quite dumb." This man said, silently making a sigh as he listened at the news that was being broadcasted right in front of him through a television.

He didn't expect, that after several encounters with some demons, sometimes having observers near him just to look cool to himself, he would have already shown up in news this early.

But, would it be worth it? Perhaps, he wasn't going to make his NPC/mob facade shown at this moment, or the next time, or even later, but at a certain time.

The news broadcaster had begun to speak in a professional, yet serious tone.

{"Breaking News! Just this day, the mysterious criminal by the nickname of "Super Elite Ninja" has been spotted somewhere in Tokyo, killing many soldiers along with two high-ranking officials!

Investigation teams are being sent to the area to find out who he is and what his location is as we report this news to you citizens.

If you are in Tokyo, please stay inside your homes at all times at night, otherwise you might meet this criminal.

Thank you.

Now, to the next....."}

After that, he gained a large smirk on his face.

It was really funny hearing all these words, considering those guys were working with demons like some secret organization and nobody heard from it.

"Hmph.... I'm finding this entertaining. The ultimate vigilante, that's who I shall become." This man said, dramatically raising his hand and clenching it to become a fist.

He really felt like delivering a speech for himself right now, so he does what he does best.

"Hero, villain, Taimanin, Demon. Vampire. It doesn't matter, I am who I am. The Eminence in Shadows, what better way to call me than the one who came from Darkness itself, born to relieve humanity from the despair that hides from the shadows.

I am.....

.... Shadow!"

'Damn!!! That was so epico ~! Now for the next part, if my enemy was lurking from the shadows, what should I say....?'

He began trying to rehearse something that would sound like it would pull attention to him.

"Say.... why are you still hiding behind that poor object barely covering you? Come out, your small presence is felt by me already!" Shadow said, in such a cocky way that it was nothing short of making any enemies to hesitatingly come out.

It was novel! One of the scenes that would shock the audience!

'Tsk, as if I had one. For now.' He told himself, tilting his head to the side and putting his hands in his coat's pockets.

Shadow now really wanted to leave and return home at this moment, so he just walked away silently.

However, at the top of the building, two Taimanin in their uniforms were shuddering, before staring at Shadow's figure.

".... His own speech is terrifying. Is he the one they asked us to take out?" An orange haired Taimanin asked, only for the black haired one to grit her teeth.

"... Yes. Of course. Let's move out before he uses magic to escape."

The two immediately leaped towards different buildings, intending to flank him on different directions.

When ready, they dropped down towards Shadow with both their weapons ready to cut him down.

The two expected him to dodge, but did not expect him to turn a part of his clothing/uniform to turn into intensely hard tentacles and blocked the strikes from the Taimanin.

Extra tentacles formed from his suit, grabbing their legs tightly before lifting them up and slamming them to the ground harshly then throwing them towards a building.

In reaction, the two performed backflips and landed on the ground, barely injured.

Gazing at the coated figure that had an aura of mystery, Asagi kept observing.

Then, the coated man decided to turn around with a smile hidden under thick shadows.

"Hey, I haven't met any Taimanin for a while. Who even are you, explain why you are here." Shadow asked, yawning in front of them.

They saw this as him not even taking them seriously, which made the two really feel like wanting to take him as a threat to them, more than just some powerful demons.

"Asagi Igawa." The black haired Taimanin replied, glaring at Shadow. "I am here to slay you after your apparent disgrace of our village!"

"I'm Sakura Igawa." The orange haired Taimanin replied, tightening her grip on her two tanto. "Did you really just do all that crime for your own pleasure?"

'Disgrace? What in my name is she talking about? I'm not really interested in your stuff right now, but I'll go along, then.' Shadow thought to himself, raising his arms to his sides with a knowing smirk.

"I have no affiliation to you and your village, ever since I was a mere little child. You could call me someone you know, but who I was, is just a mere shadow of myself. We shall meet again, Taimanin."

To be honest, it should've been the right time to fight them, but he was getting tired from his most recent injuries through inhaling sleeping gas for a long time.

So for now, he tactically escapes, not having interest in fighting the two.

How?

Shadow used several hand signs to channel strange energy he can use through these hand signs, blanketing himself and the area around him in shadows to escape very quickly through it.

"Wait! Where are you going!?" Sakura yelled out, gaping her mouth like a fish.

"Taima Particles? But, he used Magic to manipulate his clothing.... Strange."

Although confusing, there was nothing Asagi and Sakura could do but retreat to give their own reports.

In the next day....

Location: Gosha Academy

An almost average-looking student tiredly walked inside the dojo, as late as he usually is.

Once he was inside, a female instructor immediately glared at him with such immensity that he visibly shook.

"Oi, Kagenou! You're late again for the fourth time! What the hell is wrong with you!?" She yelled out, forcing the boy to walk inside the dojo at an increasing speed.

"Ah... I... I'm sorry, that won't happen again! I was just taking my toilet time!" The boy replied wryly, but it seems like the instructor is not taking his excuse lightly.

"Enough excuses! 10 laps around the dojo!"

"Y-Yes!"

Who is he?

He is also the protagonist, or his NPC persona by the name of Cid Kagenou.

An average, second year student who tries his best to become a mob at the daylight and taking it seriously...

He was also a Taimanin, born from a clan with him only being the one surviving, as strange as it was.

Correction, trainee Taimanin

Truth is, he is also adopted as Shidou Igawa. For until he was forced to be disowned by the Igawa Elder due to his apparent useless personality.

He lives alone in a decent house built for him, and has little to no friends. At least that's what he thought since he definitely had friends he hadn't noticed much.

He did have a heavy secret, however....

He was also Minoru Kagenou before he was reborn, someone that had more knowledge than he normally should have right now.

This boy took the chance to further increase his knowledge and the scale of his worldview.

After all.....

If NPCs have the potential to become Cameo characters that will become Side Characters in the "sequel" or potentially even the start of the "series", what else can he do against that fate?

And..... This was just the start of everything.

< ~ TO = BE = CONTINUED ~

The Coolness of Shadow!

Vs

Generic Hentai Anime World

Begins now!