Wow, I knew how good DxD stories are but to this extent?

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Kuoh Academy. A once prestigious all-girls school had just recently turned co-ed. This high school has some of the most beautiful and noblest women in Japan so it was no wonder that the males ogle at some of them.

Of the students studying there, there were 2 women that everyone vyed for their attention. It was them that got the school to turn co-ed in the first place. Not for their stunning looks and professional attitude, but also their supreme-class bodies that every woman would die for.

Those 2 are Rias Gremory and Akeno Himejima.

Rias is a foreign student, said to be descended from European nobility, and wanted to take in Japan's culture. So she had her father turn Kuoh Academy into a co-ed school. Her red, striking hair was the talk of everyone when they passed by her. Not only does she have a world-class body, but she's incredibly smart and very athletic. With her cute face and curvaceous body, she was the pinnacle of womanhood everyone dreamed about.

Akeno is what the Japenese call, a "Yamato Nadeshiko", which is a perfect woman by Japanese standards. She is not only elegant in every manner but is also Rias' best friend. Everything that Akeno does can be classified as world-class art and every woman desires to be as elegant as her.

With these 2 in their 3rd year in high school, the students have all given them the title of [2 Great Onee-Samas].

"Jeez, and I was able to get into a school like this? How lucky must I be?" Issei lightly said as he took down notes. "Well, what happens, happens."

Issei is right now in class and he just saw Rias and Akeno pass by his classroom, Of course, those seating near the door had a dopey smile on their face and weren't paying attention at class.

The day started right for him. After he ate breakfast, his friends, Matsuda and Motohama, all asked him about 'breast this' or 'breast that', and Issei had to answer if he was his old self. And when they reached the school, Issei noticed them.

Rias and Akeno were also arriving at school and everyone turned heads at them. He couldn't blame them since they were pretty beautiful. But he's been around women before and the [Gamer's Mind] helped collect his thoughts. While they were pretty, he respected them as much as a regular man would.

But a regular man wouldn't be able to sense the devil power in them. Issei felt the dark power in them, as well as others in the school. He knew for a fact that those in school belonged to the Student Council as well as its members.

He wanted to just go up to one of them and ask to be in their peerage but Issei felt as that would be too direct and suspicious. So he'll bide his time until the event happened.

Until then, Issei was a normal high-school boy with a big boobs fetish.

The bell rang, signaling that its time for lunch. Motohama instantly went towards Issei with a perverted grin. "Yo, Issei want to peek at the kendo club? I found a great spot!"

Issei would normally agree with a passion but he puts his hand. "Sorry, but I want to eat first. You guys go ahead."

Motohama raised an eyebrow at his friend. "Really? Well, alright."

Motohama and Matsuda immediately ran to the spot as Issei got out the lunch his mom made him. Before he could eat, another pervert in this school, by the name of Aika Kiryuu, decided to ask him something.

"Ne, Issei. Is something wrong with you today?" The girl pervert asked, scanning his body from top to bottom. "Normally, you would agree to go with them."

"Well, for your information, Kiryuu, I was just hungry and wanted to eat my lunch in peace," Issei answered and proceeded to eat the bento. "Which is very delicious and would thank my mother for it."

"Oh? So you would rather eat from someone older than you? My, if I had known that then maybe I should tell the teachers to watch out." Aika amusingly said, teasing the boy about his preferred taste. "But then again, I doubt they'd be unsatisfied with that monster you have under there."

Issei merely sighed and continued eating. The life of a pervert is not so easily diminished.

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The days passed by without anything happening. Issei studied, hang out with friends, read books, and passed the time. And after midnight, Issei would continue to mess around with his [Sacred Gear] and learn more about its functions.

Issei just finished packing his bag as school just ended, on a Friday no less. If his understanding of the plot is going as planned then he is expecting a surprise in his shoe locker.

And sure enough, there it was.

Issei opened his locker and near his shoes was a bright pink envelope with a heart stamp. He pulled out the envelope and Motohama widened his eyes in shock.

"No- no way." He stuttered a shaking hand pointed at what Issei is holding. "That can't be..."

"The chances of getting that is near impossible!" Matsuda added in the fear and shock.

Issei proceeded to open the envelope and picked out the letter inside. A faint smell of perfume hits his nose.

{Meet me at the old park this Saturday. I'll be waiting.}

'No doubt about it. However vague this looks, it is undoubtedly a love letter.' Issei thought. He was suddenly pounced by the other perverts as they shook him constantly.

"ISSEI, YOU BASTARD!!!" Matsuda and Motohama collectively comically cried out loud. "HOW DID YOU GET THAT LUCKY ALREADY?!?!"

"Beets me. But hey, I'll tell you about how boobs felt." Issei slyly said, leaving the crying mess that is his friends.

And when he was out of earshot and no one was nearby, he went into [ID Create] and proceeded to shout out the embarrassment quote he did.

Once things settle down, Issei swore to be less of a pervert.

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Rias Gremory let out a long sigh. Being confined in her clubroom, doing nothing but write reports after reports as well as sign a literal mountain of paper, just made her body scream for release. After she had finished her work, Rias got up from her seat and stretched. Her busty body seemingly stretched the already tight school clothes she wore. Once she felt all the tension released, Rias sat down once more.

'The number of requests these days is too much for me. If only I had more members.' Rias thought. More members would mean more paperwork but at least she can have someone help her instead of Akeno, who was absent due to a job that requested her. 'Maybe after I somehow find a way to fend off my fiance, I'll search for some.'

The thought of new members made Rias remember what day it is today. It surprised her since she was still working to gain more power than anything. 'That's right. It's Issei's date today. Wonder how is it going?'

Ever since yesterday's commotion, Rias had sent her familiar after Issei to watch over him. As of now, Rias and her friend in the Student Council knew that Issei had a [Sacred Gear] in him. One of her own had verified it and was certain of it. After the date, Rias would approach Issei and offer him the position in her peerage. She needed all the help she needs to get out of her disgusting marriage with that over-bearing cocky, narcissistic fried chicken!

Rias calmed down after getting a bit... much on the subject and decided to check in with Issei. The day was already starting to go and the sun was just touching the ground. With some effort, Rias used her contract with her familiar and looked through her eyes. She wanted to see how it went and wondered if Issei truly had a girlfriend.

And after some time, her vision changed from her clubroom to the outside world. She noticed that she was in a park and in front of her familiar, Issei, and the girl he was in sat on a fountain. The familiar hid nearby and listened to the couple's interaction.

"Hyoudou-senpai, the date was absolutely wonderful. Really, thank you."  The girl, likely the one who sent Issei the love letter, said.

"It's not a problem. I also had a great time myself."  Issei replied with a small smile. "But, I have to ask. Why did you ask me out?"

"Mou, senpai. Don't you know what it means?" Issei shook his head and the girl merely smiled cutely. "It means I want to be your girlfriend. If that's alright with you?"

Issei was surprised by the looks of his face and nodded. "Of course. I would be happy to be your boyfriend."

The girl gasped and formed a big smile. "Yes! Thank you, Hyoudou-senpai! Or should I say, Ise-chan?"

"But, can I ask you something?" Issei raised an eyebrow and nodded at his girlfriend's question.

"Would you die for me?"

Rias suddenly felt something wrong when the girl said that and it turned true. The innocent-looking girl suddenly transformed into a mature-looking woman with black straps wrapped tightly around her body. In her hands, she conjured a spear made of light and threw it straight at Issei. The boy hadn't realized it before it was too late as he puked out blood from his mouth and kneeled.

Rias immediately stopped watching and conjured a magic portal to her familiar's destination. Without a moment's hesitation, Rias activated the portal and jumped in, and prepared to swat away Issei's attacker.

She knew something was amiss when Issei had that letter but she never knew that he would be targeted by a Fallen Angel. Perpahs it was her own fault that she let one come so close in her territory or that she knew that Issei had a powerful [Sacred Gear] and didn't act upon it.

As she exited her portal, Rias found a near-dead Issei and no fallen. She clicked her tongue in annoyance and guilt as the fallen had done the deed. Once she determined that the fallen had gone and no one was nearby, Rias checked on Issei.

She felt his pulse, as it grew weaker by the second, and the pool of blood near him wouldn't stop. As she checked on him, Rias felt the power emanating from him. It was powerful and old. It reminded her of her brother.

'So you really had something this powerful?' Rias thought. 'This is a chance. I can finally end the agreement between me and my father.'

So, without a moment's notice, Rias proceeded to make Issei Hyoudou into her.

A devil.

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A couple of hours ago...

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Issei patiently waited for his supposed 'date' to come. In preparation, he wore a red-collared shirt and simple jeans. Something casual and nice since this is technically Issei's first date. Something he has yet to do back home.

As he waited, he checked the status of his [Sacred Gear] thanks to his grinding in the dungeon.

[Sacred Gear: Red Dragon Emperor's Gauntlet] - Active - LvL 24/100 - Exp: 73.7%

While relatively low, it was good progress since this is what yielded from a week's worth of training while studying school. After this whole ordeal, Issei plans to max out the [Sacred Gear] and perhaps receive a [Balance Breaker] as well.

From what he remembers of the series, [Balance Breaker] is achieved by going above and beyond normal conventions and achieving a powerful state. Maybe this time, Issei doesn't get his ass handed to him by his rival/counterpart.

"Hyoudou-senpai!" A shout brought his attention to a young girl running after him. She had long black hair with a cute face and a nice body. "I'm sorry for being late."

Issei let a smile grace his face and shook his head. "It's quite alright. I just got here myself."

The girl let out a sigh as if she was glad about it. "Thank goodness."

"Now, may I ask about my date's name?" The girl immediately brightened up and answered.

"My name is Yuuma Amano. Nice to meet you."

"Same here, Yumma-chan." 'If that was your real name.' A quick [God's Eye] and Issei checked the one who would 'kill' him. 

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[God's Eye]

Name : Yuuma Amano (Raynare)

LvL: 3 (26)

Species: Human (Fallen Angel)

Rank: 1st Year High-School (Fallen Scout Leader)

Strengths: Deception, adept in magic, favors light spears.

Weakness: Irrational when plans fail, limited power over subordinates.

Info: Raynare is of the Fallen Angel, this who have sinned and are marked with black wings, with its leader as Azazel. Her orders are to eliminate any and every devil and exorcist in the town of Kuoh and incite another 'Great War.'

___

Issei was honestly surprised to see such a low-leveled enemy since her group invaded Kuoh. And if someone like her could easily pass by the rulers of this town then Rias seriously needs training.

Yuuma then pulled Issei's arm with a bright smile. "Come on, Hyoudou-senpai. Let's have fun!"

Issei merely smiled at her and let the Fallen take the lead.

Throughout the day, Issei and Yuuma went around the mall, enjoying the day. While this was technically Issei's first date, he still made some notes on what to do and don't to prepare for actual dates. Meanwhile, Yumma just had a bright smile and stuck by him all the way. It honestly sickened Issei that a being like her had such a rotten personality on the inside.

He can't wait for his chance at her.

Just as when the sun started to set, Issei and Yuuma headed to the old park when they first met. The sky was glowing with an orange hue that made it feel warm.

"Hyoudou-senpai, the date was absolutely wonderful. Really, thank you." Yumma said. Her cheeks were a faint red.

"It's not a problem. I also had a great time myself." Issei replied as he took a seat at the fountain to rest. "But, I have to ask. Why did you ask me out?"

"Mou, senpai. Don't you know what it means?" Issei shook his head and Yuuma merely smiled. "It means I want to be your girlfriend. If that's alright with you?"

Issei feigned a shocked look as if a pretty girl just asked if she wanted to be the love of his life, forever. If this was a regular setting then perhaps Issei would have a good life, like the ones in a [Slice-of-Life] genre. He'd watch it.

"Of course. I would be happy to be your boyfriend."

Yuuma then gasped and happily jumped. "Yes! Thank you, Hyoudou-senpai! Or should I say, Ise-chan?"

"But, can I ask you something?" Issei raised an eyebrow and nodded at his girlfriend's question.

"Would you die for me?"

That was when the true face of Yuuma Amano revealed herself. In a flash, Yuuma's clothes exploded into shreds and the lithe figure morphed into a buxom adult. Her attire suddenly changed into a dominatrix with leather-bound on her body, highlighting all of the woman's curves and mammary glands. Even though Issei wasn't a pervert, he couldn't deny how erotic the outfit looked on the woman before him.

But that didn't end. A pair of raven wings sprouted from her back, unfurled and out as Yuuma took to the skies above him. The sight made Issei catch his breath.

And in one fluid motion, Yuuma conjured a dark spear in her hands and threw it straight at Issei. Although trained, Issei had to actually fight his instincts to not dodge the slow-moving projectile hurled at him.

The spear connects to his stomach, piercing his shirt but not doing anything at his body. He knew the spear couldn't do much, at best only shave off a small bit of his [HP] and he can take on the [Fallen Angel] with no difficulties. But that would pose a problem later on in the story.

So in a split second while the spear was in his stomach, Issei conjured a small bubble of fake blood and made it spurt out of his stomach and on his mouth. It would an ass to clean his clothes but it'll work with the illusion of near-death.

Issei kneeled in response to the injury and felt a magic circle being conjured nearby. It seemed that Yuuma, now Raynare, noticed as well and flee. She gave a small looked at Issei before taking off and disappearing. By then, Rias had appeared.

Issei then lay on the floor with the blood pooling out of his body. He knew Rias wasn't as adept at magic as he was so he honestly prayed that she didn't know at first.

The red-haired devil went and kneeled next to him. Issei let her check on his body, making his heartbeat slower and weaker with some breathing techniques and the blood kept pouring slowly. It seemed that she bought the trick he was going for as she pulled out a chessboard from a magic circle.

Issei can feel the power from it. Powerful magic emanated from it, and so compact into a small shape. If Issei had been exposed to this power without his [Gamer] status then he would have been a devil since day 1.

Rias picked the [Pawn] piece from the board and placed it on his chest. Strange energy began flowing into him and a pop-up appeared.

WARNING!
 An unknown power is attempting to turn the user into a devil.  The [System] will prevent the power to continue.

Will you continue?
Y/N

Issei mentally shook his head, denying the [System] interference and allowing the devil powers to take place in him.

Another pop-up appeared.

WARING!
If the power continues, certain [Skills] and [Abilities] will be locked or depowered until an alternative is found.

Would you still like to continue?
Y/N

'Yes. Let it take over me. I'll get stronger to find a cure myself.' Issei talks to the [System] as the pawn piece was consumed by him.

Instantly, a new power has surged within him with dark properties messing around. He can feel his [Skills] being changed one after another to suit the power more. It was an unknown feeling that Issei had to feel.

One more pop-up appeared before Issei.

 Devil Transformation Process:
12.5%

'Welp looks like it'll be a while before then. Rias will just put me home anyway so, might as well.' That was then Issei went to sleep and let the devil do all the work.

Devil Transformation Process:
25%

37.5%

50%

62.5%

75%

87.5%

100%

User has fully transformed into [Low-Class Devil]
The following [Skills] is now changing...

[Persona Magic]: {Holy} Magic has decreased by 50%
[Persona Magic]: {Curse} Magic has increased by 50%

[World Sense] has upgraded to LvL: 12 

[Soul Energy] has upgraded to LvL: LvL: 10

[Spell Master] has upgraded to LvL: 9

User has gained Title: [Low-Class Devil]
- Increase {Curse} magic by 50%

User is now in eternal servitude with his master:
Rias Gremory

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The sunlight beamed from across the room, hitting the face of the one sleeping in it. Issei blearily opened his eyes at the bright star outside and sighed.

"Man, High School is weird"