Issei POV

After that spectacular performance, I decided to walk back home, no need to wait around, I haven't encountered any possible threats, and if I remember correctly, Raynare doesn't arrive for a while. So I think I just need to keep an eye out for stray devils, maybe eat them.

I forgot, I got wings after the draconification, right? How do those work?

You can use your wings with your transformation ability, which I highly recommend...when out of sight

Ah, that means I'm being watched, doesn't it? Thank you, time to fly in my ID and get home fast!

"ID Create!" I cried out after booking it, holding out my hand as the world warped around me. I'm glad I chose the empty ID.

You can create and edit your own dungeon within your dungeon territory

So that's how it works~ may have to expand it before I pull in someone like Kokabiel.

Worries for later, for now, I think I should try to practice flying, which seems quite hard to control.

"I'm so glad that I can't feel pain, and that I, as a slime, am resistant to fall damage. Alright, you remember the explanation from Leefa. Just imagine you have extra bones in your back, and try flapping them. Just keep them going simultaneously...like dribbling a basketball, two at once...Michael this is hard... wait, why am I saying Michael? There are still gods, and God did exist, so why-?!" After I got distracted by who knows what, I crashed into the side of a building.

[-12 HP]

There it is...

"It's harder than SAO made it look... but this will still help...with transformations..."

Would you like an assisted flying lesson?

"Thanks...for offering...after the fact..." I deadpanned, quite literally peeling myself off the wall. Thank whatever for slime.

"If only I could wind walk, or just propel myself with the wind like a jetpack. Wait...couldn't I just do what I did with the water?" With the ingenious thought, I immediately began consuming the air around me, pulling it in, feeling the magic and flow of the wind, feeling all that came around and in towards my being.

"Alright, now to jus-" as I attempted to gently push it out of my hand, I was shot backwards by the sheer force of the blast, as a ball of wind shot out.

[ skill: Spinning Wind Sphere created]

Huh...did I just create a Rasengan?...

Later, for now, I have to make this a manipulation type skill like with the water.

Alright, I just need to push this out a bit more from my legs, ready my wings, position away from the buildings, and...

[Skill: Wind Propulsion created]

I was shot into the sky, the wind in my wings tossing my hair all over the place, and the wind pressure saying I'm gonna need goggles for a while as I shot into the sky.

"Alright, at least one more to go~"
I decided to mimic what I did with the water, but I decided on a different way

"Whirl Rings~" I brought out the Spinning Wind Sphere and began spinning it even faster, faster, even faster. I had to keep going, until it could barely keep shape, becoming like a disc as I forced mana in to control it, and compressed it further into a disc, before sending it flying towards a building, cleaving right through the walls and somehow cleaving the building in half.

"That's not a whirl ring...that's a Destructo Disc...my god...that is so cool~" I salivated as I awaited the next moment

[Skill: High Speed Wind Disc created]

[Combining skills Spinning Wind Sphere, Wind Propulsion, and High Speed Wind Disc. Creating composite Skill Wind/Air Manipulation]

"And there it is baby~! Oh man, this is gonna be useful~!" I shouted out, doing a loop in the air as I crashed into another building.

[-15 HP]

"..." I just quietly got back on the ground and walked the rest of the way back, not saying anything else.

On the way home, I tried to mimic what I saw people doing in movies, shadow boxing, with imaginary opponents. It may work, may become a skill, but it's worth testing.

After doing a couple rounds with imaginary goblins, it finally came

[Due to a specific action being repeated, the skill Shadowing has been created]

Yes! It worked, now let's hope it's as good as I think~

[Shadowing (Active)]
Creates an imaginary/Illusionary opponent, mimicking encounters already faced. With added mana, these shadow opponents become more realistic, giving minimum experience points, but can be used to train skills.

"Now THAT is what I'm talking about~!" I clicked my heels in joy as if I had just won a bike from a McDonalds ticket raffle and was going to ride it with Ronald McDonald.

#notsponsored

"What was that?"

Nothing

Well, time to get home, fully heal, and prepare to kick some ass tomorrow~!
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Rias POV

"So, Sona, have you discovered what that presence was, or more specifically, who it was?" I looked to my friend who had been quiet for quite some time. As of now we're playing chess, and I've been winning pretty one sidedly, even with me not trying as hard as usual.

"You seem a bit out of it, Sona, are you feeling alright?" I called out to her as she seemingly snapped out of her trance. She seemed quite confused, flustered even.

"Y-yes, I believe I have...that odd presence...I can't tell if he knows about it himself, but if he doesn't know... he's been exposed to our side by someone else..." she muttered softly, only showing me the glint of her glasses as she gave a serious gaze.

As I thought she was about to bout at me, she began to blush heavily, before muttering something "and...he may have..."

"Yes?..." I encouraged

"Flirted...and or...confessed to me...earlier...today..."

Huh?... did I just hear right? And is she blushing?! She never blushes!

"It was a shock for me, alright, it's not like I like him, okay? I still have my policy, that they must beat me in chess." She looked off to the side, flustered.

Oh how I enjoy teasing her, she's normally unresponsive, but it's fun. Akeno helps me with it too. I know what to say next~

"I guess this means I could marry you too~" I was just four moves away from winning, but it doesn't look like she's-

"Hardly." Sona simply replied, as her Rook stole my King "check."
.
.
.
"HOW?!"

"No explanations, now, tell me about this stray you're having trouble with..."
________________________________
Issei again POV

Who knew that me not needing sleep would lead to a quest like this being possible

[Quest:Night Raider ]
Recently, stray devils have been infesting the Gremory territory more prevalently, exterminate them are night and search for the cause of the surge in strays. Take care of the strays when encountered
Rewards: 3000 extra exp per stray, added reputation among the biblical faction community, +2 Charisma, ?????

"Huh...guess I'm going hunting tonight~! ID Create!" I decided to get to work, sneaking out with the help of my ID, but I made sure to use my presence erase skill just in case somebody could get in here. And after thinking about it, the way to break out is way to simple for this to be secure and used as a prison. So scrapping that idea until I can level it up a lot more.

[ID Create became lvl 2]

"...well, that's plot convenient" I deadpanned at the timing, but that's not enough to make this like the slayers demon prison
"Guess I'll just join up with Ramiris for the prison dungeon" I just started moving through the sky, flying while using my air manipulation skill, and blitzing with my detection skills to try and find something I think I can fight

[Presence Detection Leveled Up]
[Mana Perception Leveled Up]
[Presence Detection Leveled Up]
[Bloodlust Detection Leveled Up]
[Mana Perception Leveled Up]
[Presence Erasure Leveled Up]
.
.
.
"How are there this many?! My mini-map is showing red dots left and right! How have they gotten this out of hand?!" I had to take a moment to rant, as I was finding many that were far stronger than I was, and many that I couldn't even get close to because they knew I was there already. How I knew was because bloodlust detection kept leveling up. All of them are so strong, as expected of devil monsters that killed their masters, compared to me who, even with the benefits of abusing every power I can, am still underpowered for them.

"The folley of accepting a quest while underleveled..." I lamented, until I sensed one with a small enough mana signature for me to think I can fight, and the fact I can't sense bloodlust either means it doesn't take me as a threat, or that it can't tell I'm here. Either way, I'm going to use this opportunity to kill it, and then spend the rest of the night fighting zombies and goblins until morning.

"It's a good thing, as a slime, I no longer need to sleep."

You aren't fully a slime.

Huh? What's that mean?

Nothing

I'm not buying that, but it's not like I expect an answer like that for free.

With all that's been going on, I nearly forgot about the Stray, need to take care of it, and prepare for battle.

After coming to an open home, I used presence erasure, slowly floating as to not make a sound, and using every detection skill I had to determine where the stray was. I did my best to ignore the blood on the floor, and the body parts that have been partially eaten as I come to a halt. In front of me, hunched over a corpse, it's mouth filled with flesh and blood, spilling from the intestines and gore, was a shadowy creature that was as vile as a goblin, and as vicious as a demon.

It was awful, the smell of blood filled my heightened nose with every breath as I looked, fear grasping at my throat. I may not need to breathe, but this was still a demon, a monster, and I could still smell the vile meal it was devouring with eager joy.

"Analyze." I muttered, using air manipulation to cover the noise, silencing the sound as I looked to it, and I realized that it may be a harder fight than I thought.

[Akra Diveros: lvl 20]
A demon with the power of shadows, scorned for his cannibalistic nature, he may be weak, but he is dexterous and crafty. He can see through the shadows around him. He killed his master, before consuming her flesh and the rest of her peerage.

Wait...does it say...

"I see you~" as I pondered, the monster know as Akra dove through the wall, and quickly came out of the wall to my right, slashing at me without giving me much time to dodge, cleaving through my neck.

[-7 HP]

Thank Michael he didn't imbue magic, and thank the system that any injury as a slime is the same as getting hurt anywhere else...I can use this.

"Hahaha!!! A foolish kid! Not even a devil, and he thought he could fight me! Hahaha! No chance in Hell~ now that I look, he has some good mana, maybe I should-" As he spoke, I urged my body to get up, and stab him with the knife I prepared at home, imbuing it with mana as I jabbed it through his arm, quickly taking out the next from my inventory, and stabbing the next through his knees.

"No chances, if you can use shadows, no proof you can't be shadows. And the best way to hurt a shadow is with light, and best way to hit something without form is with magic~" I walked over to the lights, turning it on as he ran back towards my body, attempting to claw through its heart.

[-12 HP]

"Hahaha!! So you're an undead! But no undead can survive when they're torn a-" I once again stabbed him, I'm starting to run out of MP, but with gamers body, his hand is stuck, giving me the perfect chance to pummel him without the need for a knife, stabbing him in the neck, and beating the knife in.

After the carnage, he was bleeding through his neck, dripping a black tar out as though he was black to his soul, I couldn't tell how much HP he had left, but I don't think I have enough mana to last much longer.

As I trudged over and pulled my head back on, slowly recovering my health, I tried intimidating him through Acting, as though I still had more to give, and began to release as much bloodlust as I can

[Through a specific action, the skill Bloodlust has been created]

[Through the involvement of the skill Acting, the skill Bloodlust has became the skill Intimidation]

"I guess this means that things are coming to an end, wouldn't you say, Akra~?" I tried using it, and I realized that as a protagonist, I shouldn't provoke the flags.

But I was too late...

"Don't...DON'T FUCK WITH MEEEEEEE!!!!" Akra screamed, as his body morphed, becoming more solid, growing talons, and somehow more monstrous than before as I watched, inciting me to try and fire a magic arrow at him, but I couldn't stop what was coming.

"Huhuhuhuhu~... you have no idea...what you've just done~..."

A/n: I hope you enjoy my reign of terror, as you wish for this to keep going, but you'll need to wait a bit longer, I'm already past 2000 words.

Ciao~