Disclaimer: I don't own the 'Type-Moon' franchise or the 'Ace Combat' franchise. They are owned by their respective owners, and this work of fiction is purely for entertainment and not monetary purposes.


Chapter 1: An Unexpected Complication


Hatred, hatred was all he knew now. At one time he could confidently say he was at the height of his life; he had everything he could want. A position of power that made him one of the most powerful men in his country, a country he would die before seeing it fall. A beautiful pale-skinned wife with the ability to calm him from the stresses he would endure, and an equally beautiful angle of a daughter that he loved with all his heart. The honor of knowing everything he did was bettering his country, and the knowledge that his nation's enemy would soon learn to respect his country once more.

Yet, that was all in the past. Forced into the shadows, scorned by those who couldn't see that his actions served his country, his wife burned, and daughter stolen and manipulated by those insufferable peace-preaching enemies of his. His honor was robbed, his named spoken of like that of a demon. He lost everything to them.

Yet he plotted his enemies' demise. He gathered like minded men and women, orchestrated events to weaken his foes, and when it was time, he struck. His enemies waged war between themselves, while his countrymen armed themselves, readying for deliverance from their bitter defeat. Yet it was all for naught! His plans were uncovered in due time, and despite his efforts to set his plans back on course, they were destroyed by them. The Ghosts that should've stayed dead, all but one. His daughter flew amongst them, and despite her fighting against his ideals, he couldn't fault his angle for being manipulated by those cowards.

But even with his plans burning all around him, he would've been fine, knowing his daughter was alive and well, with a bright future ahead of her. But it was not to be, as those fickle, simple minded, so called 'defenders of peace' condemned her to death because of her heritage that was hidden from her! He vowed to rescue her, but like everything else, it was all for nothing, as he watched helplessly behind bullet proof glass as his daughter, his sole reason for living, was killed in front of him.

Even as he felt a bullet rip through his neck and blood choking off his airway, he couldn't feel anything else other than sorrow and hate. Sorrow for failing his daughter and hate towards those that destroyed everything he held dear; his honor, his country, his wife, and most importantly his daughter.

Yet for reasons that baffled him, he was here in this blacken void. Drifting through it, he wondered if this was a personnel hell he was to endure for his actions. If so, it was damned effective, loathe he was to admit it. He had feared to die in life, but he thought that if he somehow retained consciousness, he would be reunited with his wife and eventually his daughter. But instead all he got was a bitter, silent, lonely darkness. The only thing he could do was contemplate and stew on his hatred.


Closing a case, a woman of Asian descent with black hair wearing all black sighed as she waited to hear from the only person who ever gave her life meaning. He had saved her from the hell that was her childhood, trained her to become a skilled assassin, and eventually became his lover, despite him already by that point being married. She couldn't understand him, not entirely, but she didn't need to; she would do whatever he said, because without him, she was nothing.

The young woman paused briefly, remembering her life in some warzone, being a child soldier who was tortured and raped by her 'comrades', even ending up pregnant. Her child, the one thing that is almost universally agreed should be a mother's pride and joy, was ripped from her hands before she even got to name him, and to this day she didn't even know what her child's fate was. It was shortly after her child was taken from her that 'he' arrived.

Kiritsugu Emiya, the Magus Killer, an assassin known for his ability to kill Magi without leaving much behind for one to follow. He arrived to kill her 'commander', killing him without much effort, but on his way back out, he came across her. For reasons she didn't know, he had saved her from that hell that was her life.

Over the years he trained her like his mentor had him. Marksmanship, CQC, demolitions, infiltration, espionage, and so many other skills that aided him in his missions, she was taught and quickly began to master. While not on the same level as him, she was confident that unless they were on the same level as her mentor, she would be able to deal with whoever they were.

Glancing at a clock the young assassin Maiya Haisu, a name given to her by Kiritsugu, wondered how long it would be until her mentor's mission began in earnest. Her mentor's mission was nothing less then winning the Holy Grail War for the Einzbern family.

A war between seven magi and their seven Heroic Spirit servants; spirits that had throughout their life garnered fame and a status above others of their age that their name still echoes throughout humanity and reside within the Throne of Heroes. There were seven distinct classes of servants.

Saber, swordsman without equal and the most noted most powerful of the three knight classes. Lancer, spearman whose skills were often only matched with their poor luck. Archer, servants with the ability to commit to actions without expanding their master's mana reserves and masters of long range combat. Rider, servants of mounts that are legendary enough to make up for their weaker stats. Assassin, shadowy servants that are too weak to stand on equal footing with other servants but can slip past them and slay masters. Caster, often argued the weakest of servants due to most classes having a form of magic resistance, are none the less powerful Magus of skill that rival anything modern Magi can wield. And finally, Berserker, the servant of madness, ones who lost their sanity and in return gained heightened stats, the most mana-hungry of all servants and the hardest to control.

Maiya knew that fighting in the war against the servants was tantamount to suicide, but that was not her mentor's plan. Instead, he intended to use his wife as an ersatz master, and in the shadows eliminate the other masters with the skills he had mastered over his long hard life. It would be difficult, but not impossible, as she knew her mentor has hired out spies to discover the identity of the other masters.

Sitting down, she waited inside the bland hotel room she had been using as a safehouse. She knew Kiritsugu would soon summon his servant, as would the other masters, but it couldn't come soon enough. She may have been cold and calculating, but even her patience had a limit. She had spent all she could scouting out the city of Fuyuki, where the war would take place, but even so, it was so mind numbing at this point she just wanted to have the war begin.


Little did she know, or for that matter anyone else, that the Holy Grail, the omnipotent wish-granting device, was tainted by an ancient Zoroastrian 'god' of evil, Angra Mainyu. A being that as a servant was only made to slaughter humans, it nonetheless corrupted the Grail into a wish-granting device that came at a terrible cost.

Due to this taint, not only were anti-heroes allowed to be summoned, but in this particular war, due to the interference of the Einzberns in the last war, was able to allow for an eighth servant to be summoned. A servant who would best resonant with one that was filled with a desire to avenge themselves, even if they didn't realize it themselves. However, due to the grail not having any extra time to gather mana, it was able to force a summoning of a weaker, if still capable, Avenger unto an unwitting master.

It was this complication that the Grail looked beyond this world's Throne of Heroes in search of a suitable Avenger. It took some time, as most Avengers had heightened stats due to their inherent wrath giving them the ability to surpass the natural ability. Some had Noble Phantasms that simply were too exhaustive and would easily drain the servant quickly. And others still were demi-gods or something similar, too high a being to summon into the war what with the other seven servants that were bound to be summon already taxing the system.

However, as it gazed throughout the various Thrones of Heroes, it found what it was looking for. A human that was of the equivalent modern era, whose stats as a result weren't the highest. Yes, some of his skills were high, but that was easily supplied by the grail. The more the spirit of Angra Mainyu looked at the Avenger it had found, the more it wanted it to be summoned. Their wrath was so great, and its wish was so honest, that it would be nearly impossible for its master to order it to commit suicide even with the command seals. Its Noble Phantasms, while exceedingly powerful, were replicable by mundane means.

As a result, Angra found the perfect avenger for the 4th Holy Grail War; an Avenger with a will of iron that was 'weak' enough to be easily summoned into the War without exhausting any more mana, with skills and Noble Phantasms that would allow the Servant to stand up to the others. Yes, while Angra was still hoping that the summoning of Archer would be enough for its purpose to be done, at the least it had a sufficient backup in the form of Avenger.

Pouring mana into the unsuspecting Avenger's master, it began the process of auto-summoning the spirit of vengeance into the material world, one where it could cause destruction in its wrathful wake.


A burning sensation on the back of her right hand was something Maiya wasn't expecting to wake up to. Sitting up in the bed she was sleeping in, Maiya quickly looked at her hand to see what the cause of the sudden flair up of pain was. Whatever she was expecting, she didn't think it would be something she recognized, a set of command seals. It was in the shape of three arrows that formed a triangle, but while it's shape was simple, its implications weren't.

Why was she, Maiya Haisu, former child soldier and currently the assassin protégé of Kiritsugu Emiya, selected to partake in the Holy Grail War? She didn't have any wish that she knew of, and it in fact complicated her mentor's plans, something she didn't want to have happen. And if she recalled, the appearance of the seals hadn't caused Kiritsugu any pain, so why did she feel pain?

"It's because I was summoned to be your servant, Master." Maiya's eyes widen as she whipped her head towards the window, where a tall man stood. He wore a long grey trench coat over a white shirt that had a black tie, with a black peak cap being held by his gloved hands. She saw he held a walking cane in his right hand, but more importantly was the subtle bulge that most likely concealed a weapon under the trench coat. He looked like he was in his mid-50s, with grey hair and steel like eyes.

But his words troubled her. How was he summoned; wasn't a ritual needed like the one Kiritsugu was going to do soon? If so, then how did she summon him in his sleep, or did someone else summon him? As though reading her mind, the man spoke.

"I wasn't summoned through the traditional means of a summoning Ritual," the servant spoke in perfect Japanese, yet with a German accent. "From what little I gathered from the knowledge imparted to me by the Grail, the Holy Grail had acuminated an excess of mana and used it to allow for an 8th servant-master to be formed. Why, I don't know, but I suspect it might be an inbuilt system to prevent damage to the grail by excess mana."

Maiya frowned; while it was common knowledge that pouring to much mana into any magecraft could cause…unexpected consequences, the Holy Grail shouldn't be so easily affected by excess mana, as it drew upon the local ley lines to fuel up so to speak. To have excess mana to trigger such a system that the servant described, if one did exist, would require someone to have dumped more mana into the ley lines, which as far as she knew wasn't possible. But how else could she explain it; she wasn't that knowledgeable about the Holy Grail's inner workings, as she was just to support Kiritsugu. She would have to ask her mentor later, but for now she had to deal with the servant.

"Is that so?" Maiya rhetorically asked. "Then if you are my servant, then what class of servant are you?" The man smirked.

"I am of the Avenger class, servants who are known for their desire for revenge," Avenger spoke. "As was imparted on me, the last Avenger summoned was the Einzbern's servant in the 3rd Holy Grail War. The reason the Avenger class isn't that well known or even documented is simple; Avenger was an exploit in the Grail's system, but was taken out as the first casualty of the 3rd Grail War. Therefore, the full extent of what Avenger is remains unknown."

"Alas, while I could spend the night away explaining my class, I think it would be more pertinent to look at my stats," Avenger stated.

"Very well, Maiya said, before taking a breath. She gazed upon her servant and thinking that looking at his stats would be similar to reinforcing one's eyes, she did just that. What she saw of Avenger's stats shocked her.

Avenger's stats were, quite frankly, quite low. Of the 5 preliminary stats (excluding Noble Phantasms), his highest were Strength and Endurance, of which they were only a C-rank. Agility and Magical Power were at a D, and his Luck was a D-. However he seemed to make up for it with his skills and Noble Phantasms.

His class skills consisted of something called Avenger which was at an A-rank, Memory Correction at an A+, and finally oddly enough Presence Concealment which was at a B. For personal skills he had Military Tactics (B+), Charisma (C+), Command of a Strategist (B+), and finally Global Subterfuge (A+). This Maiya supposed made him a military general or perhaps a warrior king, though why he would have a skill that made it possible for himself to hide from other servants if he was a well-known leader confused her.

But his Noble Phantasms, it seemed were extremely power. While she didn't know the specifics, such as their name, of each phantasm, she could tell the type and rank of each one. The first was an Anti-Army B+-rank Noble Phantasm, while the other was an EX-rank Anti-Nation Noble Phantasm. While she wasn't an expert on Noble Phantasm, she did know that while Anti-Army class Noble Phantasm were fairly common, Anti-Nation were not. She wondered what it could be, as a Noble Phantasm of that class and power must be something extremely powerful.

However, before she could ponder any longer of the nature of his Noble Phantasm, she saw her servant take a seat in a chair in the room.

"Now master, while I'm not the strongest servant, I am more than capable of keeping myself alive and can fend off most servants. However, I can sense that while you are giving me some mana, I will need more to sustain myself if I wish to use my Noble Phantasms," Avenger said. Maiya frowned.

"I saw the stats of your Noble Phantasms, and while they are powerful, most servants are, in theory, able to use their Noble Phantasms without draining their mana reserves. What makes you Noble Phantasms different?"

"In theory, nothing," Avenger started. "However, they are mundane weapons that are the pinnacle of their type where I'm from. The fear they held over my enemies along with their power means I need more energy to use them than say if… Cu Chulainn used Gae Bolg. His Noble Phantasm is outright deadly, but is limited to killing one person if he does not throw it, thus it isn't too much of a issue for him to use it. My Noble Phantasms conversely take an immense amount of energy to use due to its innate nature, which means-"

"-You need mana to make use of them," Maiya said. She sighed. "Well, we'll figure something out. However, Avenger, you need to understand that I am going to support my mentor in his bid to win the Grail War."

Maiya saw her servant's nostril flare up for a minute, before releasing a breath, mostly to cool his nerves. When he did speak however, she quickly noted the hostility in his voice.

"Pray tell, why are we going to help another master if we both have wishes to achieve?" Avenger asked.

"I don't have a wish, except to help the man who saved me," Maiya said calmly, trying to placate Avenger. "And knowing his wish, well, I can't say anything I could wish for would be so selfless."

Avenger frowned; he could tell his master didn't have much in the way of emotions, yet she seemed to think her mentor had a better wish then any she could come up with. He refrained from scoffing, as it would not due to strain his relationship with his master so soon, yet he couldn't help but think her statement about her mentor's wish was bullshit. All wishes, no matter what they maybe, are inherently selfish; one does not form a wish unless it in someway benefits them.

"Regardless of reasons, we will ensure my mentor achieves victory in the Holy Grail War," Maiya stated. "For now, please astralize to conserve on mana consumption, and until I can contact my mentor, you will not take any actions that shows you are here."

Avenger nodded, it made sense from a pragmatic point of view, but he did like having a form once more; much better than floating in a void. But he did was asked, as pragmatism was better in the long run then foolishly wasting energy. As he astralized, he vowed to change his master's view on the Holy Grail War; the entire war was selfish in nature and therefore she should seek what she desired, not what someone else wanted.


Author's Note: Another new project, another Fate/Zero Crossover, but my first Ace Combat fan-fic?! What the hell, I played the shit out of the Ace Combat 4, 5, and Zero as I was growing up, hell I still play them, yet it taken me until now to write a fan-fic for it?! What the fuck was I doing?

Ahem, that rant aside, welcome to 'Fate/Aces' my attempt to do a Fate/Zero and Ace Combat crossover. So what's the story about, and how did I come up with this idea?

Well to begin, I came up with this story like I usually do while working. I have a lot of time to think as I am stocking the cooler and beer-cave at the gas station I work, and I was trying to figure out a fun Ace Combat Crossover to do. I read a couple that were good, some that were okay, and some that…the less said, the better. Eventually, I thought 'what if someone that would be in Ace Combat was a servant in the 4th Holy Grail War?'.

This then lead me to the first issue; who and what servant class. Well, I decided to stay well clear of established characters, mainly because I don't want to anger the Ace Combat Fans, and also because I wanted to do someone who has a different view on honor and conflict. As for classes, I didn't want to remove any of the servants from the 4th Grail War, so I decided on Avenger, mainly because with the idea I had, it would make sense for Angra Mainyu to want this servant to be summoned.

Now, I am going to bring up the Servant's stats and traits, and I'll explain why they are what they are;

Stats;

Strength: C-

Endurance: C-

Agility: D

Magical Power: D

Luck: D-

Noble Phantasm: B- - EX

Class Skills;

Avenger: A

Memory Correction: A+

Presence Concealment: B

Personnel Skills;

Military Tactics: B+

Charisma: C+

Command of a Strategist: B+

Global Subterfuge: A+

First the main stats. As Strangereal is set in a slightly-more modern version of Earth and the Servant is from the period of the time period experienced during the Ace Combat series, he wouldn't have amazing stats, as weapons progressed to the point where they force a decline in heroes (take for instance a man with a machine gun could kill hundreds without too much difficulty, physically speaking, as opposed to a man with a spear, where such a feat would be taxing and only the most able could even attempt to do).

Thus, his highest stats cap at C-, with most being D to D-. He is slightly above most people in terms of ability, yet compare to someone like Arturia, he would be swept aside if he fought in close combat like a ant underneath a man wearing jackboots.

What saves him is his class and personnel skills. What makes Avenger so dangerous is the longer he can remain in play, the more impact he can have. This is due to Avenger (which allows him to gather more mana the more angry he becomes and the more damage he receives), Memory Correction (he never forgets the source of his anger, allowing him to surpass normal limits to inflict damage to succeed), and Presence Concealment (which allows him to go unnoticed by most Servants, vital when he is physically weaker than most, with the exception being Caster and Assassin).

His personnel skills is based on his history in which he was, close to Maiya's guess, a military genius. He however is also a master manipulator, getting others to do his bidding. He isn't going to be above bringing outsiders into the Holy Grail War, as he is the kind of man that would do anything for victory.

Which brings me to his noble Phantasms. They are from the Strangereal universe, and therefore revealing what they are would be a massive spoiler, so that is why I only hinted at what they are. But if you want a comparison, his weaker noble Phantasm is able to one-shot most servants should it hit them directly, while his more powerful one would be considered OVERKILL. Not quite like Enuma Elish, but still more powerful in terms of area of effect than any other Noble Phantasm.

But I've been rambling long enough, so until next time, please read, review, follow, and favorite the story.