AN: This is more of a mini-story that I'm putting out since it was on my mind. I really like those SI stories that involve the Phenex family, I've seen one for Raiser and Ravel, and they both are great, but oh so grim… And since I'm not a naturally grim person I decided to roll with a self-inserts natural tendency to acquire ultimate power through munch-kin'ing in a different way. Simply put, Genre Savvy One-Punch Ravel Phenex that ends up messing up canon.

This chapter, Ravel and Raiser are kinda like a certain pair of siblings from Chiba, Valerie is Gasper's gaming buddy and another loli vampire is forgotten (and traumatised). Somewhere out there, Rias Gremory is crying, but we don't know that because she gets no screen time.

A chick evolves into a final boss, she doesn't like it

Those beings called little sisters are more devilish than any devil.

They start by looking up at you with adoring eyes while lavishing praises on all your perceived virtues. It makes you happy to know that at home there's someone that will always look up to you. You try to meet their expectations. After all, the magnificent brother and/or sister cannot possibly fail their younger sister!

Of course, that's a lie. Everyone fails. Why? The answer is obvious. It's because older siblings aren't perfect. No one is. But still, the sheer joy and burden of responsibility laid upon by a cute little sister that believes that you are the being that is closest to perfection spurs the older sibling on to greater heights!

But that's just a sly tactic. Everyone has an agenda, little sisters included. Beings with agenda's are either well-adjusted members of society that understand how favour of any kind should be reciprocated, or, they might be secretly sociopaths.

Devils are known to be sly and care little about the wellbeing of others.

Hence it stands to reason that there is a possibility that little sisters are sociopaths.

Source: Ravel Phenex, aka, the little sister used in the monologue that was probably written by some wannabe edgy cynical teenager with little to no actual facts to back up her own views.

Why would a little sister ever think of having such a lengthy and utterly meaningless monologue that is clearly a bad attempt at sophistry?

The answer to that question can easily be found on the internet.

Boredom… and possibly a teensy bit of guilt as well.

Why boredom? Well, that will be answered later! Teehee!

As for guilt-

"Ughhh, why do I have to take you to the human world again?" Her older brother groaned after agreeing and proceeding with the aforementioned task.

This older brother had been given the birth name of Raiser Phenex. He had roguishly handsome looks with a fit body that was adorned with the finest white shirt and red blazer combo that devil nobility can afford. He also had awesome shoes!

He looked like a fried chicken. And his blonde hair did little to remove that impression from his little sister that never told him that to his face.

No! Her adoring little sister did not use those words to describe her older brother! It was the evil perverted ordinary teenage boy that so happened to be the main character that said those words!

Or, it would have been if the current time was about, let's say, two to three years in the future.

"That's because your cute little sister asked her favourite brother very nicely!" The little sister said.

Said little sister was wearing a cute pink frilly dress with her golden blonde hair done up in a twin-drill style that would easily allow her to enter the stereotypical ojou-sama club! She was also adorably short, but not too short. If captions existed in real life then there would be a 'Give me head pats!' caption permanently following her around.

"Calling yourself cute just removed some of your cuteness, also, dragging out your brother who happens to be sensitive to the pollution of the human world into the very place he considers a cess pit of pollutions reduces your cuteness by a factor of 2." Raiser deadpanned while wiping the sweat on his forehead as his sister was dragging his hand through the crowded streets of Tokyo.

"Huh? That just means that your sister's cuteness level has decreased to 20 times the level of the average little sister! Big brother should be grateful that your little sister is that cute!" She puffs her still developing chest in pride with the haughtiness of a proper ojou-sama character.

"As much as I agree with that statement it would reassure your big brother if his cute sister would stop decreasing her own cuteness. I mean, as a fourteen year old little sister your cuteness will run out in around two years' time, so please stop using it up so quickly so that your dear brother can indulge in the bliss of having a cute sister a little longer!" He pleaded.

"Hmmm… okay. Ah, I have just the solution to get back my cuteness. In fact, it was the reason why I, the best sister in the world, had requested your company to the human world in the first place!" Ravel says confidently.

"Your brother's ears have suddenly been regenerated to perfection through our family bloodline. Please, go on!" Raiser urges her to go on.

"Well… your little sister took the liberty in establishing communications with her future mother-in-law and found out from Lady Venelana all about your betroths worldly interests! And so, here we are, adventuring in the crowded streets of Akibahara to attain these objects of her desire! This will surely increase her affection points to my esteemed older brother!" Ravel proudly explains her reasoning.

"Ooooohhhh! As expected from my cutest little sister-" Raiser shouts and was interjected.

"- I'm your only sister." Ravel says with narrowed eyes.

"- That cares so much for her beloved brother! I should never have doubted my dear sister! I can already see your cuteness meter rising to it's fullest!" Raiser continues undeterred.

"Brother, people are staring. We should continue on our way. Leave altering the memories of the humans to me while I explain our objective to you." Ravel says as she slapped the palm of her hand to her forehead at the scene the siblings are making.

Her actions were rather hypocritical considering she had equal responsibilities towards the disruption caused by their sibling banter.

In any case, Ravel Phenex, little sister and devil extraodinaire, led her older brother to the many 'Animate' stores, where they promptly purchased one of everything because they couldn't be bothered to be selective.

It helps that the devil nobility of the Underworld are filthy rich to the point where each of the main pillars would own enough land that would dwarf the land mass of Japan.

Ravel explained that Raiser's betroth and current target of his lust was a Japanophile and anime otaku. Hence, they need to visit Japan to acquire much of the multi-media items to give to Rias Gremory as a gift to her.

Never mind the fact that this was just an excuse for Ravel to do some shopping on otaku media of her own… Hence, she was a real devil by manipulating her brother like that…

Now, Ravel had explained that it was her duty as his little sister to help Raiser in his endeavours. This was especially so considering that she had refused to aid him by becoming his servant and instead, using the excuse of admiring her older brothers, wanted to become a 'King' of her own peerage as well.

Everyone in her family bought it. Hook Line and Sinker.

Why was this important?

That was because in another universe, she would have served her older brother, Raiser as a Bishop instead.

Ah, but that's jumping around a bit… while the terms were common knowledge for a devil, it was not so for an ordinary human.

So to sum it up in the tl:dr format, this is it in the shortest possible form.

On Earth, Gods and other supernatural beings existed. The biblical factions were the largest and had this really terrible war. Then there was a ceasefire, the devils had a civil war, and then the faction that wanted more reincarnated devils won out. Reincarnated Devils were humans (or other races) turned devils via items called Evil Pieces that were based off chess pieces. This was the peerage system, and was led by a 'King' who was more often than not, either of the nobility (Main Pillars), Reincarnated Devils that rose up the ranks to become a 'High –Class' devil, or devils that had lots of power in many different ways.

The Phenex family, obviously, sounds like Phoenix.

No prizes for guessing what powers they have.

The Phenex Family, was rich, old and was of the Main Pillars (remaining original pure devils and what not).

Obviously there would be arranged marriages! Hence, Ravel's support o help her brother who had used the Evil Piece system to form a peerage made out of only cute girls that would only encourage him to continue his womanising ways instead of being an outstanding man that would not immediately repulse his future bride.

Ah, but there's a missing piece of the puzzle! What about this 'other universe'?

Well, in another world, Ravel wouldn't be helping her older brother this way, and perhaps his siscon tendencies wouldn't have evolved to this new from like a saiyan would transform into a super saiyan.

No, Ravel would be closer to a 'Tsundere Ojou-sama' that leans more on the 'Dere' who would eventually be part of a harem to the ordinary high school boy that was mentioned above.

Oh, and their family would be ruined because of her brother's incompetence in losing to that high school boy due to his arrogance! And she would be encouraged by her mother to garner the favour of that boy!

Now, if this was the other universe that perhaps the outcome would be acceptable if you disregard minor personality issues (Dense and Perverted) of the high school boy.

But Ravel Phenex would not stand for that outcome!

Why was this so?

Well, to put it simply, she's not… exactly Ravel Phenex.

Sure she has her body, smarts, cuteness, powers and other *ahem* assets… (They really are big in the future!)

But quite frankly, she isn't exactly the same Ravel Phenex if said girl had the knowledge of being a fictional character in a light novel series about boobs, dragons, devils and high school.

To be more exact- At the ripe age of thirteen, Ravel had been sipping tea one day only to find out that she had the fate of becoming a harem member. Drilling down into specifics, it can be said that it was if the knowledge of an adult male had been crammed into her head for no explicable reason other than to make her a sort of self-insert character just to spice things up in her universe.

And spice things up it did! After all, forbidden knowledge that would drive people mad along with knowledge of many future antagonists that could easily wipe her and her family out of existence should certain events play out would certainly spur her into action.

It was thanks to this knowledge that she started training seriously instead of relying on her in-born talents.

To sum it up, she had pyrokinesis, aerokinesis flame wings (awesome!), superhuman (devil) physique, nigh-immortality (Regeneration) and more importantly, demonic power!

And that was at the beginning!

Why was demonic power so important? That is because it fuelled devil magic, which ran on 'IMAGINATION'!

Let that sink in for a bit… you have an energy source that can basically fuck all world laws along with the knowledge of many other fictional magic systems that would shit on every other devils use of magic simply because no one was smart enough to exploit their 'IMAGINATION'.

You now also have lots of fanfiction knowledge along with canon knowledge of other series including the universe you are in, what do you do then?

The answer was obvious for little Ravel.

She needed to protect herself, along with the lives and prestige of her family from all the scary physical, magical, economic and political threats out there!

Saving the world was a side bonus that would be left to the main character because exploiting plot armour is the way to go!

And more importantly, find happiness! Because going full 'save everyone' always ends badly, so fuck that!

Just ask swords for brains, EMIYA.

She was also a teenage girl that really didn't want to become a harem member.

Admittedly, this was due to knowledge of many extreme H-games and animes being crammed in her head which made her very apprehensive of relationships with the opposite sex.

The path was clear.

The one defining thing that would allow her freedom from her fate and the many dangers was this- UNLIMITED POWER!

Yes, with devil magic this was certainly possible.

All she needed to do was make bullshit magic to become bullshit powerful.

Nasuverse magic was the easiest to start with. Thought Acceleration, Memory Partition, Reinforcement and Flash Air were the number one priorities!

The first two were training boosters, hence they were pursued first.

Shounen Jump training methods were also on the top of the list! Namely, exercising her pool of magic energy, and then utilising the prana theory of the Nasuverse to use external mana to rejuvenate herself worked wonders.

Oh, that seal thing from Yu Yu Hakusho was good too. So were the weights from Naruto, oh, we can't forget plenty of fanon training methods that somehow had worked out as well.

And also, credit to the Hyperbolic Time Bounded Field ripped off DBZ and Kiritsugu Emiya's magecraft that was somehow bastardised together, and worked.

There was also the need for plenty of knowledge, keeping up the façade of the weak little sister, setting up pieces on the board (For glorious Keikaku Doori!) and the need for like-minded allies for ULTIMATE COSMIC POWER!

… Maybe that was overstating things a bit. Stupid wannabe Isekai (Other World) protagonist feelings! Shoo! Go away! Please go bother Natsuki Subaru instead! His Isekai wannabe feelings are so high that this would barely make a difference anyway.

Speaking of Subaru, it's such a pain that the DXD time period was rather far behind the release of Re: Zero.

One such motivation for ultimate cosmic power was to accelerate her to the future so that she could watch season two.

What? The usefulness of the knowledge had to make her appreciate the original media like Fate/Stay Night, right? It was only natural that she appreciates it further by adopting the foreign knowledge's quirks!

Ah, she's forgetting something. The boredom part… why did she use a crappy monologue that looked as if it was butchered from Hikigaya Hachiman's monologues from Oregairu?

Well- She, sort of, trained too well.

Arriving back at the Phenex Mansion with most of the 'goods' purchased stored in their personal subspaces through teleportation, Ravel gracefully arrived through flame teleportation ahead of her brother who was reading 18+ restricted material without any shame.

What a terrible brother!

With her arrival, a blonde haired teenager came running towards her at supernatural speeds and hugged her tightly. This was done in a manner where the teenager had jumped at Ravel, who had caught her, and ended up spun around on the spot she was standing at comically as a result.

"Ravel! You're back! Thank goodness, *sniff* the game Gasper lent me is too hard! Can you beat it for me?" The female teenager said with tears in her red eyes as she hugged her friend.

"Again? That friend of yours really can't stop playing everything on hard mode…" Ravel said casually even as she was still spinning around the room due to the momentum.

"Valerie-chan! I, Raiser Phenex, shall gladly hel-" Ravel's perverted older brother affectionately began as his target of lust shifted from his betroth to his sister's best friend and Queen (Evil Piece).

"Pardon me Raiser Phenex. But I recall that spending time with any non-blood related women outside your peerage is a taboo for someone engaged, hence, to maintain the prestige of the House of Phenex please cease your thinly veiled attempts to seduce me with your false chivalry." Valerie Tepes, dhampir and holder of one of the Longinus (Sacred Gear), coldly and quickly rejected.

"Gahk! Logic has felled the great and mighty Raiser Phenex!" Raiser said as he clutched his heart and fell face flat on the ground.

As much as Ravel loved that her brother was extremely relaxed and fun to be around when no one else (other than Ravel's servants) was present… he still was overdramatic to the point where she would cringe frequently.

Oh, and he's a little bit of a douche outside their interactions, but still- he's still her beloved older brother that is hopeless without her (he just doesn't know it yet).

"Brother… why don't you sort through the stash for something to gift to your wife-to-be? I emailed you Rias's google search results that I hacked through the internet so why don't you go through that to find out what she likes best?" Ravel said dismissively as she shooed her brother away.

Unable to refute his sister's logic, the playboy devil slumped away from another cute girl he was rejected from having a relationship with due to his engagement.

"… I feel like I'm forgetting something, oh, right, how is Elmenhilde?" Ravel inquired from Valerie.

"Ah! She's doing great! The last time I checked she only- um, what was it? Ah, she only curled up in a ball for 32 minutes and 10 seconds after I said your name! That's a 35 seconds decrease from yesterday!" The blonde dhampir cheerfully talked about her fellow servant with a slightly vindictive smile.

Ravel sighed and groaned in an unladylike manner.

Elmenhilde Karnstein, a light blonde, red eyed pure-blooded vampire that was now her bishop.

Ravel sighed as she thought back to how she had 'befriended' the two girls after she accidentally the Vampire faction.

Yes, that was spelled correctly.

Simply put, there was no other way to say it other than she 'accidentally' the vampire faction.

It was a trial run. She thought she had gotten somewhat strong and had some free time, so she performed an orbital drop into Romania with all her 'buffs' (which included an identity concealing spell) on, landed in vampire territory and somehow punched their castles into oblivion in a way that did not result in casualties.

Not to say there weren't any casualties at all-

The deaths came later when they attacked her with magic and well, whatever vampires do.

It was self-defence! How was she supposed to know that vampires died with one punch?

And, well, she needed to silence them, kind of…

There weren't many survivors. Many others had fled, oh, and she somehow found a shivering Elmenhilde who was extremely terrified of her who had been clutching on to a completely apathetic Valerie Tepes (What? She was locked up and deemed insane by her family? What did they expect? Sympathy? LOL! Oh my, that wasn't lady like at all!).

Things happened, and she somehow brought those two home and befriended them.

Well, the befriending part is 50% complete, at the very least.

Ah, she may not have ULTIMATE COSMIC POWER, or even UNLIMITED POWER, but recently she has gotten a bit bored from getting too strong.

Hence, the really foolish attempt at making a monologue…

Ravel slumped in a manner that her mother would lecture her extensively as it was extremely unladylike.

"*Sigh*, why did I have to get so strong? Maybe it's time I, what do the humans say, 'hit the books' instead of training everything combat related." Ravel muttered.

"Nonsense! There's no such thing as too strong! Anyways, you have to help me beat Elder Scroll IV: Oblivion!" Valerie patted her head as she said her piece, only for Ravel to turn sharply at her.

"Oblivion!? Are you joking? Just do what I do and make overpowered spells!" Ravel retorted.

"Wha! But its so hardddd-" Valerie cried out to her friend.

"Hmph! Fine, I'll help you finish the game just this once!" Ravel, unfortunately for her, was too sweet on her friend.

After all, no matter how strong you get, it isn't easy getting rid of the Tsundere'ness.

That fact, still terrifies the girl since if she believes having the trait would force her into being a harem member.