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Fanfic / The Moon's Flash Princess

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Asuna used to be a normal girl. But that was before she was trapped in the Death Game Sword Art Online. She, along with the mysterious Beta Tester Kirito must stick together to not just clear the game but pick up the pieces of their broken lives after the game is finally beaten. And then, when they find a talking cat and are attacked, their complicated love life just gets even worse.
Summary of The Moon's Flash Princess Book 1: Surviving Aincrad
Asuna used to be a normal girl. But that was before she was trapped in the Death Game Sword Art Online. Now awake, she and her husband Kirito, must figure out the mystery behind the three hundred still sleeping Players. Can they do it while also being thrust into the Shadow War that has been going on behind the scenes for the last nine years in the Real World?
Summary of The Moon's Flash Princess Book 2: Waltz of the Unseelie Court

The Moon's Flash Princess is a Sword Art Online/Sailor Moon fanfiction series Crossover that posits the potential of what could happen if the Sword Art Online game was created in a world where the Senshi fight daily to keep the evil Dark Kingdom at bay.

The story itself in a similar way to the Progressive canon light novel: Kirito, going into the First Floor Labyrinth, encounters Asuna as she fights the local monsters and her own despair over being trapped in a deadly world. As the two forge deep bonds within the deadly virtual world, it becomes obvious that there is more to both of them, their friends and Aincrad that what is immediately apparent.

So far, this series is formed by the following stories:

  • Book 1: Surviving Aincrad (Complete): The players of the virtual world of Aincrad, led by Kirito and Asuna, fight to free themselves from the trap they have found themselves in because of the actions of the Dark Kingdom, while Akihiko Kayaba attempts to aid the players as best as possible and the Senshi seek the one who can truly lead them in their war against the Dark Kingdom: the reincarnation of Princess Serenity. SpaceBattles Link, Archive of Our Own Link.
  • Book 2: Waltz of the Unseelie Court (Ongoing): Aincrad's Final Boss has been defeated, and the Sword Art Online veterans have earned their freedom - save for three hundred players who mysteriously remain connected. Now, the veterans, their allies and their leaders, Princess Asuna and Commander Kirito, look for the reasons why their three hundred companions remain asleep while they prepare themselves for the war against humanity's greatest enemy. SpaceBattles Link.

This Fanfiction series has examples of the following Tropes:

  • Actually Pretty Funny: Lind acknowledges that Kirito (who begins the story as a fourteen year old) reading the riot act to him and Kibaou during one of their pre-boss fight meetings was fun, and requests a friend to get a recording of the next time it happens.
  • Adaptational Backstory Change: Kazuto's parents died in one of the first Youma attacks, instead of a car accident - and he not only witnessed the attack, but only survived thanks to a few magical words he had learned from his brother Akihiko.
  • Adaptational Heroism: Kayaba is a good guy in the story and created SAO and ALO to train people up to assist the Senshi.
  • Adaptation Dye-Job: Rather than looking almost identical to Usagi, Minako is pretty much an older and fitter Asuna, as befitting of her duty as the double of Princess Serenity and her reincarnation.
    • Did result in a minor panic when she was seven, as her hair and eye colors suddenly changed to be the same colors that Asuna has, on the day that Asuna was born.
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  • Affectionate Nickname: Kebechet is regularly called by a diminutive of her original name, Skuggi, by Rameses. Only family is allowed to call her that.
  • All There in the Manual: The forums have a great deal of expansion on elements of the story, with explanations of magic, characters, and other bits of world building.
  • Artificial Intelligence: Cardinal, Yui and Strea, like in canon.
    • Averted with Kizmel. When her actions begin to become way too advanced for her expected limitations, Kayaba began to suspect that her real life counterpart (Princess Serenity's bodyguard, on whom he had modeled said character) was still alive. She was, and the Senshi bring her and her sister Tilnel out of their cryogenic pods in the Moon.
    • Also Camilla, the main AI of ALO. She aids Kirito and Asuna in helping free the players trapped in ALO as well.
  • Attractive Bent-Gender: Kirito, being a bit of a Pretty Boy, and can pull this off to Wholesome Crossdresser levels.
    • Rameses, at least in Silica's eyes. Granted, those times tend to also coincide with him being Dragged into Drag by people who know how to dress him up and make him look good doing it.
  • Badass Adorable: Silica, of course. Made more so since she was recruited into the DDA by Lind and learning their own brand of fighting.
    • Umi, despite being only ten, killed a Youma without using weapons or active magic. Granted, she's Half-Spriggan and Half-Youma, which helped.
  • Badass Normal: Kathy Mills, Agil's wife, kills a Youma just with an axe.
  • Badass Preacher: Boxy, a former Youma that becomes a Catholic priest, acts as a Good Shepherd to anyone that requests his help (no matter their religion) and is not afraid to fight with his bare hands in defense of others.
  • Bare-Fisted Monk: Boxy, if he has to fight, prefers to fight without a weapon in his hands, despite carrying a mace on his person, due to the fact that none of the weapons he's tried ever felt right in his hands.
    • Sailor V may have a sword at home, but prefers killing youma with her considerable martial arts skills.
  • Berserk Button: Kirito's is players in SAO killing other players even though they have been warned that it would kill them in real life. Of course, there's also threatening Asuna.
    • Jadeite is also one for him as he was the one that killed his parents, to the point where he will focus his efforts on killing the Shitennou any time he appears in Kirito's sight.
  • Clap Your Hands If You Believe: Inverted. Kayaba's warning about players dying in Real Life if they died in the game was fundamental to prevent said deaths from happening. This is because the virus that caused SAO to become a Death Game had such a loophole.
    • The SAO survivors' capacity to use their Sword Skills in real life seems to stem from this. The fact that Asuna and Kazuto got married in SAO is enough for magic to consider them married in real life.
  • Combat Pragmatist: Kirito has no problem with attacking opponents from behind, as shown by him killing Kunzite and Jadeite in this manner.
    • This is the standard MO for members of the DDA, who tend to not fight nice or fair.
    • Silica and Minako: the former once downed Sailor Uranus with a surprise Groin Attack, and the latter reacted to that incident by declaring her a natural... And that she'd teach her how to really fight dirty.
  • Composite Character: Asuna is also Sailor Moon.
  • Contrived Coincidence: Suguha Kirigaya, while seeking a VR game to help her understand her brother Kazuto's love for such games, meets Kouichirou Yuuki, who not only is part of the company that is creating Alfheim Online (and can thus provide her with a beta version of the game), but also has access to his sister Asuna (Kazuto's Love Interest)'s streaming of what's going on within Aincrad.
  • Cool and Unusual Punishment: How Asuna has a thing for dressing up people who annoy her. It's all in good fun though and everyone knows she's just taking the piss out of them.
  • Crossover: Aside the obvious, we have a few:
  • Crush Blush: During their first weeks together, Kirito and Asuna blush whenever they look at each other, particularly if they are looking cute or adorable.
  • Cunning Linguist: Rameses and Kebechet are fluent in three languages (Graelic, Alvarin and Lunarian) even before they come to Earth, having both learned Lunarian due to it being the Lingua Franca of the Silver Millennium and having taught each other their own native languages when they were kids. Both are working on adding Japanese to that list.
    • Minako is known to be fluent in French and English alongside Japanese due growing up abroad, and may know other languages.
    • Aside for her first language, Lila Rossi is fluent in at least English (as a diplomat and daughter of a diplomat, a necessity), French and Japanese (though she has a bit of accent in the latter), and possibly other languages. Her fluency in Japanese is good enough to improvise some Spoonerism on the fly for a joke's sake.
    • it is implied that being bilingual was common during the Silver Millennium due to Lunarian being the Lingua Franca of the empire, meaning that many people spoke that on top of their own native language.
  • Curb-Stomp Battle: A Youma attempts to attack Rinko while she's out and about with Ēkate. The Sabercat pounces on it and kills it in two seconds, top.
  • Cute Kitten: Thalia, a sabercat kitten and is the only remaining kitten from Queen Serenity's last litter.note  She also likes to be in Kirito's hair and does a good job at it, despite her silver fur.
  • Damsel in Distress: Played with in Silica's case, as she breaks free from the trap she is in, evaded most of Sugou's assistants and is well on her way to finish her escape before she is recaptured - and even then she manages to arrange a way to send a message to her friends so they know where she is.
  • Dangerous Forbidden Technique: Rameses knows one and is ordered by Asuna to never use it again when he does against Mistress 9 and nearly kills himself in the process.
    • Using magic, particularly when one is not used to the strain it, can also qualify. The overuse of magic has pain as the least significant potnetial consequence, with serious injury or death being likely ones if the person doesn't take the hint and stop.
  • Dark Is Not Evil: Dark Magic is a thing here and it is one of the magical affinities in the story, with several characters having it as their primary affinity. At the same time, the converse can be true.
  • Decomposite Character: Usagi is still around, she just isn't Serenity's reincarnation.
  • Dragged into Drag: A favorite punishment of Asuna's when it comes to males under her who get on her bad side, as Rameses and Kirito have learned.
  • Defictionalization: In story, at least. Aincrad and Alfheim were actual places in the story's past. The locations of where both were are known and Alfheim's implied to still be there. It is later discovered that Aincrad is not only still there and functional, but still inhabited.
  • The Dreaded: Jadeite is this for the whole of Minato Ward, to the point that his death causes ward-wide celebrations.
    • Healer Hakonia Fjensdottir is this on Aincrad, mostly because of her tendency to give the third-degree to those who end up in her care with severe injuries that were the result of what she sees as recklessness and stupidity.
    • Sword Wraiths for the population of Aincrad due to their being apex predators, their ability to shapeshift, and being very hard to kill under normal circumstances. To be clear, whenever just one makes its presence known, an entire squad of elite soldiers is dispatched and they are lucky if the result is half the squad only being hospitalized afterward.
  • Due to the Dead: Boxy and Rei are brought on the expedition to the Moon, specifically to properly lay the dead there to rest.
  • Early-Bird Cameo: Kyouji Shinkawa (Shino's friend from the Gun Gale Online arc), appears during the SAO incident in the Youma attack on the Dicey Cafe.
    • LLENN and Pitohui make an early appearance, with the latter not having foregone playing SAO on the opening day like she did in canon.
  • Elemental Powers: Magics are divided into seven affinities, with some talents not linked to affinities themselves. All the characters have a primary affinity, with many having a secondary affinity as well. A few have two primary affinities.
  • Famous Ancestor: The sabercats Ēkate, Rājakumāri, and Thalia are descended from Queen Serenity, a descent that is noted by a crescent moon pattern on their fur somewhere on their bodies. Thalia is from the last litter Queen Serenity gave birth to.
  • Fantasy Counterpart Language: The Silver Millennium had numerous languages, each with counterparts, often extinct languages, in the real world.
    • Mercury: Ienni - Neshi (Hittite)
    • Venus: Emerin - Akkadian (Assyrian)
    • Earth: Sumerian
    • Mars: Graelic - Greek
    • Jupiter: Alvarin - Icelandic
    • Uranus: Rakhma - Ancient Egyptian
    • Neptune: Furenni - Ainu
  • Faster-Than-Light Travel: Played straight with the Senshi teleportation, so long as they have been to a location before or already have a strong connection to it. Averted with magitech teleportaiton, though the teleport may seem instantaneous to those being teleported.
  • Foreshadowing: Early in the story, Cardinal asks Kayaba about the second SAO GM account, and Kayaba states it was meant for his brother, should he find him. A few months into the game, Kayaba finds out that Kirito is actually his brother Kazuto.
  • Gender Bender: One aspect of Shadow Magic is the Metamorphosis spell, which allows the caster or the target to change form. One of the capabilities of it is to change gender, which Rameses has had done to him by his sister for an as yet specified reason and left that way for two months. The change is also a complete change, meaning that if one's gender is changed, they are fully functional in that gender. Because of this, homosexuality was less stigmatized during the Silver Millennium due to one of the primary issues, the inability to produce children from such unions, not being a factor.
  • God in Human Form: The Sailor Senshi's past lives were at the origin of many mythological divinities. Most notably, Haruka's past life was Hathor, Egyptian goddess of femininity (though their reincarnations haven't picked up on that yet).
    • Hinted that Minako is well aware of her past life's name of Inanna due to her being the Senshi of Venus, and thus is aware that many Goddesses of Love were often Goddesses of Love and War, which fits her role as leader of the Inner Senshi.
  • Good People Have Good Sex: Kazuto and Asuna are not shy about the fact that they take advantage of going into ALO to have sex, since it's a convenient loophole to avert potential complications from doing it in real life.
  • Guns Are Worthless: Played with. Most firearms on Earth really are worthless against Youma, and the ones that might work have too much a risk of causing collateral damage in the process. Silver Millennium-Era firearms, on the other hand, are effective against weaker Youma, but aren't used due to the fact that there is only one available, and its owner is not going to give it up to anyone who is not specifically trained in its use for their their own safety and the safety of others.
    • Rameses, the owner, also only used it once and doesn't do so again due to the fact that there is too much risk of bystanders getting caught in the crossfire.
  • Half-Human Hybrid: Well, Half-Faerie, but Umi Yorohoshka is Half-Spriggan and Half-Youma.
  • Happily Adopted: Yui and Strea are adopted by Kirito and Asuna.
    • Kebechet, the sister of Rameses, is a Spriggan who was adopted by his parents in the aftermath of The Fall due to her parents being killed and her brother being missing and presumed dead.
  • Heel–Face Turn: Several Youma have turned their backs on the Dark Kingdom.
    • Heel–Faith Turn: One of them, Boxy, got ordained as a Catholic priest. Grandpa Hino is a Shinto Priest.
  • Heroic Sacrifice: Princess Serenity killed herself to screw with the Dark Kingdom's plans.
    • Averted with Rameses, who used a spell to increase the amount of magic he can use beyond safe levels and it would have killed him had Persephone not Awakened as Sailor Saturn and used her healing powers on him.
  • Human Subspecies: The Silver Empire had four extant subspecies of humans spread throughout it: modern humans, Neanderthals, Denisovans and Elves.
  • I Hate Past Me:
    • Variation. Several of the reincarnated characters have "zombie" versions of their past lives running around, working for the Dark Kingdom, and they all hate them. Reincarnated!Beryl, in particular, hopes to be able to destroy Queen Beryl.
    • Asuna dislikes her memories of Serenity because they interfere with her own life.
  • I Have Many Names:
    • Kirito's real name is Kazuto Kirigaya formerly Kazuto Kayaba. His partner/girlfriend/wife Asuna calls him "Kirito-kun" and "Dark Sun", his main in-game nickname is "The Black Swordsman", but his most important title is "The Commander".
    • Asuna gets quite a few of her own. Kirito calls her "Asuna-hime" and "White Moon", her nom-de-guerre is "The Lightning Flash", but for the most part she is "The Princess". She also uses Cerridwen, the name of Princess Serenity's grandmother, when she's out on patrol as a Senshi.
    • Kebechet has a few. One, her current name, which she received upon being adopted by the Soulfires, her birth name of Skuggað Ljós Næturvalla, and the Affectionate Nickname of Skuggi her adoptive brother uses.
  • Inspired by...: Ami, as Sailor Mercury, has been shown to to design magic spells to use in combat inspired by Bullet Hell type games.
  • It's Okay If It's You: The only person allowed to call Asuna "Asuna-hime" or "Princess" (to her face, at least) is Kirito.
  • Irony: Sugou chose the name Oberon for his ALO avatar, since Oberon is supposedly the King of Fairies. When the real Oberon appears... he's the chief of security AND a subordinate of Heathcliff.
  • Lady and Knight: How the relationship between Asuna and Kirito plays out.
  • Language Barrier: Subverted with Rameses and Kebechet due to several characters, usually Silica, knowing Lunarian and able to communicate with and translate for them until they can learn Japanese.
  • Luke, I Am Your Father: Akihiko Kayaba reveals to Kirito that they are siblings.
  • Meaningful Name: Yomi, a youma who has turned from the Dark Kingdom, took this as her name.
  • Mega Neko: Sabercats, which are a breed of cat that is descended from Aincrad's Sabertigers, with small adults being about the size of a fully grown Maine Coon. They are also highly intelligent and are notably loyal to any humans they have bonded with and live longer than domestic cats do.
    • Ēkate, a Sabercat-domestic cat mix, has been called a small tiger and is at least thirteen years old, given that Kirito adopted him (or he adopted Kirito) when he was still being raised by his parents.
  • Miko: Silica is training to be one under Rei Hino as part of her official reason for why she is residing at the Hikawa Shrine, rather than living with her family due to them having to keep Pina's existence a secret.
  • Mercy Kill: Rameses, in a sidestory accompaniment to Chapter 27, has to do this when he fights an undead family member and performs the equivalent of Last Rites at the end of the battle to send him on his way.
  • Mythology Gag:
    • Kirito and Asuna get married and buy the log cabin in Aincrad's 22nd Floor.
    • Usagi's SAO name is Luna.
      • She is also confused by the Senshi save for Minako, for being Princess Serenity's reincarnation at first glance due to her looking very much like the long dead princess. Which is fair, considering that most of the Senshi look similar to how they did in their past lives except for Minako, who could be confused for being Asuna's older sister on first glance.
  • Not Good with People: Kirito states multiple times that he feels uncomfortable when talking to large groups of people. Unfortunately, events in Aincrad conspire against him, forcing him into the spotlight as he begins to take on the role of Commander.
  • Oh, Crap!: Persephone, as Sailor Saturn, tends to bring this reaction out by those who know what she's capable of.
    • Rameses has this again when he kills Zoicite and the possibility that what they have been fighting are considered The Dreaded on Aincrad, and for good reason.
  • Our Elves Are Different: Elves on Aincrad are a subspecies of human (scientific name: Homo dryadalis), with the Faeries (scientific name: Nerida magiea) of Alfheim taking the role of elves and being a completely separate species. Albeit, one that has been willingly genetically modified from their archaic ancestors thirty thousand years in the story's past to be genetically compatible with humans due to having reached a population bottleneck where the population was dangerously close to becoming unsustainably low.
  • Past-Life Memories: The reincarnated characters have memories of their past life. Some of them adapt better than the others - for example, during the Tenth Floor (a reconstruction of the Moon during the times of the Silver Empire), Asuna struggles to keep Serenity's memories from overwhelming her.
    • Heavily implied that all reincarnations have to deal with this at some point and most don't take it well but learn to cope.
    • Those with such memories don't have access to all of them immediately, with most having to be triggered by some outside event. This is played both for laughs and for drama depending on the context.
      • On the drama side of things, Persephone had to be talked down from committing suicide when her memories began to hit her.
      • For hilarity, Asuna learning of how Princess Serenity became the mother of several of Aincrad's Fethered Dragons, with Pina being a descendant of the late princess.
  • Poor Communication Kills: Had Akihiko paid more attention to his aunt Midori, he would have discovered that his brother Kazuto had survived the attack that killed their parents and been adopted by Midori.
  • Power Incontinence: Rameses, after he survived using a Dangerous Forbidden Technique, has to practice controlling his magical output to using only just enough, rather than too much due to an increase in his magical reserves.
  • Reincarnation: Several characters are reincarnations of people from the past.
  • Reincarnation Romance: Averted. Asuna does not even consider the possibility of getting together with the reincarnation of Serenity's lover, Mamoru - which is good, because he's engaged with Beryl's reincarnation.
  • Related in the Adaptation: Akihiko Kayaba is Kazuto's older brother.
  • Reluctant Ruler: One thing Asuna and Kirito have in common is their reluctance to take the leadership positions pretty much everyone else knows they are fated to take.
  • Rescue Romance: Kirito helps Asuna when she faints in the First Floor Labyrinth. This kickstarts their mutual attraction.
  • The Scapegoat: Kirito willingly takes this role to get the hatred away from the beta-testers.
  • Scars Are Forever: Rameses has several on his body, including two on his shoulders where, in one case, he had to have an arm reattached afterward.
  • Shell-Shocked Veteran: Heavily implied with the Senshi due to the constant fighting against the Dark Kingdom. This is an important plot point, as it is what prompted Kayaba to create SAO and ALO and implied to be the reason for which Project Alicization was created.
  • Shipper on Deck: Pretty much every character that meets Kirito and Asuna cheer on them getting together - the only difference of opinion is on when it will happen.
  • Ship Tease: Kirito and Asuna from pretty much the beginning.
    • Starting in Book 2, Rameses and Silica.
  • Shout-Out:
    • During the Silver Army's exploration of the Moon to find still working spaceships, they encounter one that is almost identical to the Millenium Falcon - which is in fact introduced with What a Piece of Junk.
  • Sick Episode: While in Aincrad, there's one chapter where Kirito suffers an illness that affects him in the game, and another where the same happens to Asuna.
  • Side Bet: Multiple characters join in a bet on when Kirito and Asuna will get married.
    • Another one gets started by Lind, Schivata and Silica with regards to Umi, on how long it will be for her to wrap the rest of the guild around her little finger.
  • Sleep Cute: From the day they met, Asuna and Kirito have shared a bed. There's even a Running Gag about Asuna complaining that "her pillow" (Kirito) was not there.
  • Spared by the Adaptation: Merida, who died before the Mother's Rosario arc of SAO, has her tumor treated and healed by Persephone. Yuuki and her sister, who had AIDS in canon, have it reduced to "merely" HIV and research is being done to see if they can be cured before resorting to Persephone simply eliminating their disease and their immune systems to rebuild the latter from the ground up later.
  • Supreme Chef: Asuna, which is both played straight and for laughs. Rameses is also quite a good cook, though more familiar with cooking up military rations and using anything he's scrounged to make good meals.
  • Symbol Motif Clothing: Kirito and Asuna's combined symbol, the White Crescent Moon over the Dark Sun. Asuna makes a scarf for Kirito with that symbol (which gives him a stat boost), and Argo gifts them a pair of earrings made by Usagi (one for each of them) with the same symbol.
  • There Are No Therapists: In the aftermath of being freed, Akihiko organizes an attempt to bring in therapists to take care of the SAO survivors mental health. Unfortunately, most of them have either already formed their own opinions on the survivors or plan to put them through a medical regime that will prevent them from being able to act normally.
  • Those Two Guys: Asuna and Kirito are barely seen separated in Aincrad.
  • We ARE Struggling Together: Kibaou and Lind, the leaders of SAO's main guilds in the first floors, can't spend a pre-boss fight meeting that does not have them arguing with each other.
  • We Will Wear Armor in the Future: Asuna, as many of her soldiers as possible, and the Silver Millennium survivors wear armor when in combat.
    • Zigzagged with the Senshi: after Asuna's first transformation modified their outfits based on her own they all found themselves in armor, but before that most were unarmored, the exception being Mars' full suit of armor and and Venus' armored pauldrons-something of a pet peeve for Venus, as she would have wanted more armor from the start (and is surprisingly knowleadgeable when it comes to chainmail types).
  • Wham Line: In Chapter 33 of Waltz of the Unseelie Court, Kirito captures one of the D.D. Girls due to suspicions he has about her identity and after Titania finishes a scan of Kirito, Heathcliff, and the Youma:
    Titania: The results are in, and yes… this Youma is, or at least was, your mother.
  • Worf Had the Flu: The Sailor Soldiers are nowhere near their best due the stress of the decade-long fight against the Dark Kingdom.

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