Aoi Hyoudou: This will be my first attempt to do a crossover story outside of my realm that Ash isn't a little kid. Pikachu will be his ONLY Pokémon. You'll know the reason soon enough. Also, I posted a poll on my profile about the story's pairing so go cast your votes! You will have until next Sunday before the poll ends. Good luck and enjoy!

A Devil and Her Servant

{…}

Ash Ketchum.

Age of seventeen and former Pokémon Trainer of Kanto stood firmly at the front entrance of Kuoh Academy, completely ignoring the strange looks he was receiving from the students around him. He wore a tattered cloak, which was drawing attention. Underneath the cloak, he wore his old Sinnoh outfit, which consists of a black jacket, blue jeans, red and black sneakers, and black fingerless gloves. Secured firmly to his waist was a katana. On his shoulder was his best friend in the world, Pikachu.

Gripping tightly in his grasp was his Kalos Pokédex with a mysterious text blinking frantically on the screen that reads:

If you're seeking for answers, come find me at Kuoh Academy.

I'll be waiting!

Rias

"Ash?" Pikachu's squeaky voice snapped Ash's train of thoughts as he glanced at his first Pokémon with a small smile.

"What is it, Pikachu?"

"Shouldn't we get moving?"

"Yeah…If we really want to find the truth behind what happened four years ago, then we must find this Rias person-" said casually Ash. "-And force her to tell us what she knows." Pikachu nodded in agreement.

Ash advanced forward as he entered the courtyard and studied his new surroundings very closely, noting that the students were in their academy uniforms during school hours. The boys wore a black blazer with white accents over a white, long-sleeved button-down shirt with vertical linings, a black ribbon on the collar, matching black pants, and brown dress shoes. For the girls, they wore a white long-sleeved, button-down shirt with vertical linings, a black ribbon on the collar, a black shoulder cape and matching button-down corset, and a magenta skirt with white accents.

It was no surprise that they were really curious about Ash's presence, he had an unusual, cute rodent on his shoulder, which made several girls go crazy nuts for the adorable Pokémon, making a lot of the boys really jealous. Also, Ash was clearly trespassing on school property, carrying a conceal weapon which made several students really uncomfortable, but he didn't care. He glanced around the area, trying to detect any unusual aura presences among the students and hoping that one of them would be Rias's, but to no avail.

That's when he noticed a couple walking in his direction. One was a young man with short brown hair and light brown eyes. His 'girlfriend' was an attractive girl with long black hair that goes down to her hips and violet eyes.

When the pair casually strolled past him, Ash sensed a very faint ominous aura coming from the girl as he paused and glanced back, staring at her suspiciously, which didn't go unnoticed.

"What's wrong, Ash?" asked Pikachu.

"It seems our search will have to wait," said Ash without glancing back to his best friend.

"Huh?" Pikachu was clearly lost.

Unbeknownst to the young teen, someone fixed her attention in his direction, smiling in amusement. It was a beautiful, young woman with long crimson hair that reaches to her thighs and blue-green eyes. 'So…that's him.' She studied the former Pokémon Trainer very closely, piquing her interest. 'Interesting…'

{…}

The next day at the Kuoh Town Shopping District, Ash sat on the bench while holding out a newspaper before him, to prevent suspicion. Standing several feet at the bus stop in casual clothes and waiting patiently for his 'date' to arrive was the brown haired teen from the other day. Checking on his target every now and then, Ash peeked around the newspaper before ducking back behind the newspaper as the oblivious teen glanced back in his direction.

"Um, Ash, why are we following this guy?" whispered quietly Pikachu.

"It's not the guy we're following, Pikachu. It's the girl." Ash corrected.

"Girl?" The perplexed Pokémon blinked. "What girl?" Ash rolled his eyes.

"The girl from the other day,"

"Oh."

Three seconds later…

"Which girl is that again?"

"Moving on…" Ash groaned as his patience was growing really thin. "We need to keep our eyes out on that girl he's with. I don't trust her, not one bit."

"Are you sure that's the only reason?" teased Pikachu, smirking.

Ash's eyebrow twitched in annoyance as he slowly glanced at his best bud.

"Or maybe…It's the fact that you're finally taking an interest in-"

Ash flicked his forehead not too hard, but strong enough to shut him up.

"Oow!"

"ISSS-SEI!" a voice originated from the familiar female called out in the distance.

"She's coming, act naturally!" Ash whispered quietly to his grumbling, little friend, who eventually obliged.

"Oh, hey Yuuma, you finally made it." Issei greeted his 'new' girlfriend with a cheesy grin. "For a second, I thought you weren't going to show up." He rubbed his head sheepishly.

"I'm so sorry, Issei!" Yuuma said apologetically. "I just couldn't decide what to wear."

"No worries, Yuuma." Issei reassured his 'date' with a smile. "Although-" He had a lewd face as he stared at her large chest, drool dangling from his mouth.

"Issei?" A growing look of concern plastered on the girl's face as she stared innocently at her 'date'.

"Oh! Uhh…" Issei immediately snapped out of his trance and returned his focus back to his girlfriend. "Ready to have some fun?" he asked lamely.

"Yeah!" Yuuma flashed a cute smile.

When the pair walked past the bench and headed off, Ash placed the newspaper flat on the bench and stood up quickly to his feet as he quietly followed the couple through the Shopping District.

{…}

Ash and Pikachu spent the whole day tailing Issei and his gorgeous girlfriend as they visited several clothing stores, a diner, and…a photo booth? At one point, Ash accidentally accepted a flyer with a magical circle on it from a salesgirl in a cosplay outfit, but he immediately pocketed it away and continued with his pursuit. The couple eventually led the former Pokémon Trainer to a local park where he and Pikachu hid behind the tree and observed them strolling through the park, hand-in-hand. In the distance, there was a gorgeous sunset, setting up the mood for a lovely evening.

Ash narrowed his eyes at Yuma as he kept his grip on the katana hilt.

When Issei and Yuuma approached the water fountain, Yuuma pulled away and skipped up ahead before turning around and facing her 'boyfriend' with an innocent smile, her hands behind her back. Ash listened very closely as she thanked Issei for a wonderful time, but her demeanor suddenly changed as she slowly approached the oblivious teen and glanced at him with a sadistic smile. The next thing she said completely caught Ash and Issei off guard.

She asked Issei if he could do her a huge favor and please die.

Issei immediately stepped back and fell flat on his ass as 'Yuuma' transformed into her true form, stripping down naked and exposing her lovely body and well-developed breasts. She suddenly wore black straps around and under her breasts, a thong-like piece, and gloves with chains. She also wore shoulder guards on her shoulders and black thigh-high heel boots.

The sky grew dark and so did the atmosphere as her back sprouted black wings, black feathers slowly drifting to the ground.

'Black…feathers?!' Ash gritted his teeth in anger as his auburn eyes flashed dangerously, his body releasing a blue glow.

Black feathers brought nothing, but painful memories.

They were linked to the tragic event that occurred in Pallet Town four years ago.

"Ash…" Pikachu stared at his best friend worriedly.

Ash glanced at Pikachu through clenched teeth. "Pikachu, get ready!"

Pikachu hesitated, but nodded.

When 'Yuuma' was about to deliver the deathblow to her former 'lover' as she materialized a light spear, a powerful lightning bolt appeared out of nowhere and flew at the winged woman, alerting her instincts. 'Yuuma' easily evaded the Thunderbolt as it completely missed her, startling Issei.

"Where the hell did that come from?!" He and his former 'girlfriend' glanced over in Pikachu's direction. "And what the fuck is that thing?!"

Ash arrived at the scene and charged forward, drawing his katana from its hilt. Yuuma's eyes widened as he swung his blade in her direction, although she easily eluded his attack as she flew into the air.

Ash gritted his teeth in frustration and glanced up, noting that the winged woman was glancing down at him in amusement.

"My, my, what do we have here, a little boy and his pet rodent?" The former Kanto native glared sharply at the taunting girl. "In any case-" She glared back. "-You're in my way, human."

'What the fuck?!' Issei gawked at Ash. 'He's that guy the other day. What the hell is he doing here?'

Ash pointed his katana up high in Yuuma's direction. "For your information, I'm here for answers and I know you have them."

"Oh?"

"Does Pallet Town ring a bell?"

A frown was plastered on the girl's face.

"No, it doesn't." said truthfully Yuuma.

"How about Ash Ketchum?" Issei and Yuuma's eyes widened in surprise.

'Wait…Did he just say Ash Ketchum?' Issei began sweating bullets. 'Isn't he the one who was accused of massacring all the townsfolks in Pallet Town, including his own mother four years ago?' He glared sharply at the former Pokémon Trainer. 'If that's true, what business does he have in Kuoh Town?'

"Oh~!" Yuuma looked quite interested. "So you're the infamous Ash Ketchum I've heard so much about over the past two years, hm?" She studied the young teen very closely. "It's a shame I must kill you along with that disgusting pervert over there." She cranked her head in her former lover's direction, which crushed his heart.

"Sorry, but I have no intention of dying today-" Ash shifted into his stance. "-Not until I find the truth."

"How amusing." Yuuma cackled, rematerializing her light spear with a sadistic smirk on her face.

"You!" Issei flinched as he noted that Ash was glancing over in his direction. "Get out of here. Now!"

"What?!" Annoyed, the high school student stood up to his feet and glared sharply at Ash. "I'm not leaving until I talk to Yuuma."

"Are you an idiot?"

"What did you just call me, you bastard?!"

Ash ignored Issei and glanced over in Pikachu's direction. "Pikachu, make sure he gets out of here alive, alright?" The Electric-type bobbed a nod.

"Leave it to me, Ash."

Ash smiled, but he quickly glanced back and noted that 'Yuuma' was diving at him. "Tch." He leaped upright and met her head-on as he swung his blade with both hands, making contact with her light spear.

*BOOOOOMMMM*

"Wow…Incredible." Issei felt the strong gust of wind and debris was heading over in his and Pikachu's direction.

Ash skidded backwards and gripped his blade with one hand after regaining his ground. He launched several sonic booms in sequence and fired them directly in Yuuma's direction.

She grinned as she easily predicted each one and eluded them through the air like the wind. She retaliated and launched multiple light spears in unison at Ash.

Ash dodged the first spear, sidestepped the second one, and deflected the remaining ones with a quick swing from his katana.

For a lowly human, he got quick reflexes.

However, Yuuma wasn't finished just yet.

She continued to launch her light spears at Ash, hoping to tire him out or at least take him off by surprise.

Ash immediately rolled out of the way as one spear flew past him and exploded into the ground behind him. He evaded another one as it exploded into the ground, as well. He managed to cancel out two spears coming from his right as he launched a sonic boom in their path, cutting them off. However, what he didn't expect were several light spears coming directly at him, offering him no time to react.

*BOOOOOMMMM*

Yuuma smirked mischievously as she hovered in the air with her arms crossed, observing the dust cloud very closely. Suddenly a blue glow caught her attention as the cloud of dust quickly disappeared. Ash's body emitted a strange light, which completely caught her off guard. 'What's this?'

With both eyes shut, Ash placed a hand on his chest and whispered softly. "The Aura is with me."

Yuuma narrowed her gaze sharply at the former Kanto native as he slowly removed his hand and placed it to the side. He lifted his head upright and opened his eyes, revealing that his eyes were no longer their natural color. They were now light blue.

Suddenly, Ash lifted his blade over his head up high and swung it straight down to the side.

Yuuma winced as she felt a stingy sensation coursing through her body and wet substance dripping down from left cheek. She touched her cheek and felt a clean cut on it. When she stared at her hand, she noticed it was stained with her blood. She gripped her palm tightly until it bleeds and gritted her teeth in anger as she glowered at Ash. "How dare you…HOW DARE YOU!" She materialized multiple light spears and launched them all at Ash in sequence.

The young teen remained calm as he observed her attacks were approaching towards him, his lips slowly curling up into a smirk. He casually lifted his katana over his head up high, but this time with both hands. He quickly swung the blade and instantly eliminated all obstacles, astonishing Yuuma.

"IMPOSSIBLE!" She gasped in surprise as she gritted her teeth, beads of sweat streaming down her face. 'How is he doing this without a Sacred Gear? And there's no way that sword of his is a Holy Sword…Who is he?'

Rather than beating around the bush and find out, Yuuma decided to change her tactic, despite holding back and testing the young warrior. At the corner of her eye, she noticed that Issei was arguing with Pikachu, who was trying desperately to get him to leave the area, shocking him with a Thunderbolt whenever he refuses to listen. Her lips slowly twisted into a sadistic grin, believing that she could use the situation to her advantage. She fixed her gaze in their direction and materialized a light spear in her grasp, which didn't go unnoticed.

'What's she up to now?' Ash stared at Yuuma suspiciously, noticing that she was ignoring him and fixing her eyes elsewhere. 'What's she looking at?' He shifted his gaze in the direction she was focusing and noticed Issei. 'Are you freakin'…SERIOUS?!' A throbbing vein plastered on his forehead as his eyebrow twitched violently. 'He hasn't left yet?! I was right, he's an idiot!' Yuuma had to agree as she prepared to launch her attack. 'Crap!' He sprinted forward and dashed towards Pikachu and Issei's direction.

Yuuma fired one light spear after the next in sequence at Pikachu and Issei, alerting the Electric-type. Pikachu immediately turned away from Issei and noticed Yuuma's light spears were heading directly towards them. He sprinted forward and launched a powerful Thunderbolt at the incoming attacks, easily canceling out the first wave. He proceeded to eliminate the second and third wave of light spears, but he wasn't prepared for a fourth as they were coming directly at them with no time to react.

Suddenly, Ash appeared in front of Pikachu and Issei, startling the high school student and his Pokémon.

"Ash!"

*BOOOOOMMMM*

Yuuma had a satisfied grin on her face as she observed the cloud of dust was slowly disappearing, appearing in her sight was a wounded Ash. He had blood streaming down from his forehead as the strange blue light around his body immediately vanished, his eyes returning to their original color. Beads of sweat also streamed down his face as his breathing grew heavy. One light spear pierced through his cloak and struck in his right shoulder while another one jammed into his left kneecap, drawing blood. Ignoring the excruciating pain, Ash gripped the first spear through sheer will and determination and yanked it out from his shoulder, tossing it aside. He proceeded to remove the spear from his kneecap as well, tossing it aside like the first.

"Ash!" Pikachu sprinted forward in Ash's direction, really concerned for his friend's wellbeing.

Issei stood speechless.

Ash saved his life twice in one day, which was really puzzling for him to understand. For someone who was accused to slaughter his mother and all the innocent people in his hometown, why would he waste his time saving his ass? It didn't make any sense.

Slowly glancing back, Ash glared sharply at Issei, which made him flinch. "W-Why are you still here? Didn't I tell you to leave?"

"Uh, well…"

"GET THE HELL OUT OF HERE RIGHT NOW!" Ash finally snapped, losing his patience and cool with the idiot teen.

"HEY FUCK OFF!" Issei glared back. "I don't give a shit who you think you are, but I already told you that I'm not leaving until I talk to Yuuma first!"

"Tch." Ash gradually turned around and faced Issei with his hand pressing down on his injured shoulder, putting pressure on the wound to prevent it from bleeding any further. "You're an idiot."

"What did you just say, you bastard?!" Issei stomped forward.

"Are you deaf?" Ash limped his way towards the high school student through the pain. "You're. An. Idiot."

"And you're an ass, Ass."

Sparks literally flew as they glared each other down.

"Come on, you two…" squeaked Pikachu with a tired sigh. "Is this really the place or time for you to be a-"

Suddenly, a single light spear pierced not only through Ash, but Issei as well.

Pikachu's eyes widened in horror as tears began to fall.

No one was more surprised than the two boys.

"What….T-The…hell…" said weakly Issei, followed by a cough as he fell backwards onto his back.

Ash managed to stay on his feet as blood streamed downward onto the ground from his chest. Slowly cranking his head over his shoulder, he was struck by another light spear, but this time through his abdominal. He weakly drifted his gaze upright and noticed Yuuma had a smug look on her face, very pleased with her handiwork.

Ash fell on his back, losing consciousness.

"ASH!" Pikachu dashed over to his dying friend's side.

'Time to take my leave, as well.' With her mission completed, Yuuma vanished, leaving Ash and Issei to die.

"ASH! ASH! YOU NEED TO GET UP! I KNOW YOU CAN PULL THIS THROUGH! COME ON, PLEASE GET UP!" Pikachu frantically shook Ash's body through his tears, trying to get some kind of reaction from the former Pokémon Trainer.

Ash gradually opened his eyes and stared at Pikachu, smiling weakly. "Hey…Pikachu…"

"ASH, I KNOW IT HURTS A LOT, BUT I NEED YOU TO STAND UP!"

Ash chuckled softly. "Sorry, bud, but I don't think I can..."

"BULLSHIT!" squeaked angrily Pikachu with a teary glare. "THE ASH I KNOW WOULD'VE NEVER GIVEN UP NO MATTER WHAT!"

"T-That Ash…is long dead, P-Pikachu…and soon I'll be, too..."

Pikachu shook his head frantically, still refusing to accept that his best friend in the world was dying, despite a large pool of red liquid was forming around Ash's body.

"NOT IF…" He tugged forcefully on the teen's arm. "YOU DON'T-" He pulled again. "-STAND UUUPPP!" He pulled once more. "RIIIIGHHHHT NOW!" He fell backwards on his back after losing his grip.

"In the end…" Tears streamed down from Ash's eyes, choking back a sob. "I…couldn't avenge their deaths..."

"Ash…No." Tears streamed down Pikachu's cheeks, knowing that he was about to lose Ash…forever.

Suddenly, Pikachu noticed a red, glowing light coming from Ash's cloak as the same flyer he received earlier in the day flew up high into the air and transformed into a summoning circle. Materializing from the circle was the same red haired beauty from Kuoh Academy as she studied the critical situation with a straight face. "It seems I have my work cut out for me." She glanced at Issei and then she proceeded to focus her interest on Ash. "Although…I didn't expect to meet the infamous Ash Ketchum under this unfortunate circumstance." said the mysterious woman, amused.

'Who…is she….and how does she know…my name?' Ash wondered as he struggled to stay conscious.

"If you and that boy over there are dying anyway, then I'll take you both." she declared as she sprouted black wings, almost similar, but completely different to Yuuma's.

'Black…wings?'

The winged girl smiled gently. "You two will devote your life to me."

'What…is she talking about…?' Ash slowly closed his eyes as he saw nothing, but darkness.

{…}

Ash gasped sharply as he immediately sat upright from his bed, his eyes wandering frantically around his surroundings. He felt cold sweat streaming down his face as he finally realized that he was in his apartment room-the same one he rented out when he first arrived at Kuoh Town. He relaxed a little, but continued to scan his room desperately for a certain Mouse Pokémon who was sound asleep, resting peacefully on the sofa.

Ash heaved a deep sigh as he palmed his face tiredly. 'So…it was all a dream.' Was it really?

Yuuma…

Her black wings…

Black feathers…

That idiot…

Blood…

Tears…

Him dying with that moron…

…And that girl!

They all felt so real to him.

He sighed again until his gaze slowly drifted to his lap where he noticed that he was completely…naked? 'What the hell?' He didn't quite understand why he was naked in the first place. Suddenly, there was movement under his bedsheets, alerting him that something or someone was in bed with him. He quickly yanked the covers and he immediately fell out of bed on his ass as he realized that the red haired girl was naked in his bed, exposing her gorgeous figure, her marvelous large breasts, her pink nipples, and her cute…ass.

She was sound asleep, mumbling softly in her sleep.

'W-W-What is she doing here sleeping in my bed?' Ash stood up and glared at the sleeping girl suspiciously. Then he quickly covered his private part as he glanced back at her with a red face. 'And why is she NAKED?!'

The mysterious woman slowly woke up, rubbing her eyes as she sat upright and stretched, letting out a soft yawn before finally noticing Ash. "Well, good morning." she greeted with a lovely smile.

"Who are you and why are you naked?" Ash demanded.

The red haired beauty looked amused as she shifted into a comfortable position, placing her arms on her right knee and resting her chin on top of them. "Is that any way to thank someone who saved your life?"

"Saved my life…?" Ash stared at the girl strangely.

She giggled. "Everything you experienced the other day was real."

'And here I thought it was all a dream…' the former Pokémon Trainer thought tiredly. "That still doesn't explain why you're here."

"I am Rias Gremory, a devil." stated simply the girl.

"A devil?" Ash looked skeptical.

"And your master," Rias added with another smile. "Nice to have you, Ash Ketchum."

A/N: Quite a chapter, indeed. Sorry if the fight scene between Ash and 'Yuuma' aka Raynare was quite short and Ash was a little OP, but at least in the end Ash still lost. So…NO COMPLAINING when the story already mentioned that Raynare was holding back and testing Ash. Ash's Aura just took her off guard by surprise. And speaking of Ash, you will know his tragic past and why Pikachu will be his only Pokémon later on. His backstory will also explain how he awakened his Aura and why he's wielding a katana. And…NO! Ash won't be having a Sacred Gear. Aura will be enough, you'll see. Plus, Ash having a rivalry with Issei will be entertaining as hell. Someone needs to keep Issei in line since Rias and her Family does a poor job handling it, which sometimes is…really annoying. As for the poll, it will be up until March 27th so keep voting!