Kirigaya Kazuto, better known as the Black Swordsman Kirito, is breaking down the gates of the World Tree alongside his sister Suguha in a desperate effort to save the love of his life from a psychopath with delusions of godhood.In another world, the third daughter of one of Halkegenia's most prominent noble families, Louise François Le Blanc De La Valliere, tries desperately to summon a familiar and shed the mocking title of 'zero'.She succeeds, relocating all of Alfheim, Cardinal, and 61,000 players into Tristain and inadvertently foiling Kirito's assault on the World Tree.Halkegenia Online (FF.net) is a Sword Art Online/Zero no Tsukaima crossover fanfic by Triggerhappy, a product of Spacebattles' continued mission to cross over ZnT with absolutely everything ever. Notable for awe-inspiring weekly update speed paired with above-average quality, strong characterization, and smooth pacing.See Sword Art Online and Zero no Tsukaima for tropes related to the original works.
Specific tropes found in Halkegenia Online:
All Or Nothing: Operation Dunkirk. If it succeeds, the rebels will be set back for months. If it fails, Tristain will be left with virtually no air force.
Asskicking Equals Authority: For the Vespid Knights, whoever defeats the current leader becomes the new leader of the knights. This is how Sayuri became leader only to be defeated by a newly blossomed Botan, a Pixie who's more willing to seek a peaceful resolution with humanity.
Becoming the Mask: Discussed. Morgiana says she is willing to become her faerie persona for real if that's what it takes to keep the fae safe.
Bee People: The pixies have many similarities to insects. They are a One Gender Race born in a symbiotic relationship with their Garden, and have a caste system, with the Knights acting as guardians, and Shamans as the spiritual leaders. They also undergo a Blossoming (i.e metamorphosis). There is no queen as such, but Yggdrasil can be thought as a cross between one and a deity.
Big Damn Heroes: Wales and Kino save Caramella at the last second, but Asuna and Arguile have to rescue all three of them minutes later.
Cassandra Truth: Louise collapses of willpower exhaustion in the short timespan between her summoning ritual and Alfheim's manifestation in Tristain. Kirche is the first to put two and two together but both Osmond and Colbert brush off her suspicions on the grounds that the strain of summoning something so huge would kill any single mage to attempt it.
Chekhov's Gun: Kino idly noticed some gunpowder stocks during the Fae's reconnaissance of York. He later ignites them to provide a distraction for their escape.
The Resurrection potions carried by Midori are later used to save Wales' life following Wardes' treachery.
Cool Plane: The Mitsubishi A6M2 Zero Fighter was replaced by the UH-1 Iroquois commonly referred to as the Huey.
"Mort, this is a really bad idea. A really, really, bad idea." [Morgiana] breathed as she unsheathed the almost ceremonial looking knife that she carried at her waist, twirling it easily before sinking the blade through York on the map. "Lets do it!"
Custom Uniform: The assorted Fae volunteers (except for salamanders), due to being former players, have a wide variety of gear.
Damsel in Distress: Defied. Asuna regains her badass status in her first scene and takes command of the SAOvivors for the trek across Albion. Even when a rebel mercenary clubs her over the back of the head and gets her in a submission hold she's still strong enough to wrestle most of the way out before her backup arrives.
Disguised in Drag: Kirito invokes this with Spriggan illusion magic, taking the appearance of his notoriously-feminine GGO avatar as a disguise for the rescue mission to Albion. Only, he's actually female in that form.
Everything Trying to Kill You: All of Alfheim's mobs and field bosses got ported over along with the players and the architecture, making this true for Tristain.
Evil Cannot Comprehend Good: Sayuri goes nuts over why the Pixies that were born from the same nest as her choose to side with the humans. She refuses to believe that the humans who took care of them are good people and accuses the humans of using magic to tame and mind control them.
Eye Scream: Fernand loses an eye due to Sayuri's last ditch attack, distracting him long enough for Count Arthur to finish him.
Fantastic Racism: The Tristainians are deathly afraid of elves and the fairies happen to look like elves with wings. It takes some fast talking and good diplomacy on multiple fronts to keep this from being applied to the fairies as a whole, but it works for the most part.
Played straight with Reconquista but averted with some of the common folk of Albion. The rebels didn't get the memo about the fae and treat Asuna and the SAOvivors as heretic elves. Royalist sympathizers ironically mistake them for a group of native fairies spoken of in ancient folktales who are said to be ancient allies of the crown.
Sayuri the Pixie hates humans because a group of them burned down her home nest. This has lead her on a campaign to drive the humans out of Tarbes.
Five-Man Band: Asuna's Treetoppers (or more properly, the Knights of Blood) quickly develop into one of these.
Four Lines, All Waiting: The story switches viewpoints a lot in the first few chapters, ranging from Louise to Henrietta to Asuna to Kirito pretty randomly. Near the end of the "meet and greet" phase the politics are mostly dropped and the story focuses on Asuna and Kirito trying to get back to each other.
It happens again during the Tarbes Arc, which was originally intended to be a roughly four chapter diversion and spun out of control into a complete side story right in the middle of the Albion arc.
From Bad to Worse: Asuna and the research subjects. On the upshot, Suguo apparently wasn't logged in when the transfer occurred, and the changes to the game world busted the lock on Asuna's cage and woke up the other SAOvivors. On the other, their only escape route appears to have dumped them in Albion where there is already civil war. Out of the frying pan...
Gender Is No Object: The Fae have both genders fighting together. Depending on how ALO was coded, there might be virtually no difference in the base builds for male and female in regards to power.
Giant Flyer: Lhamthanc the Steel Toothed's second form.
Girl on Girl Is Hot: Played with. Asuna's reunion kiss with Kirito. While the latter is still in his female disguise. Caramella seems all too pleased to have witnessed the sight.
Gondor Calls for Aid: Subverted slightly in that Kirito never actually asked for their help, but a host of SAO survivors including Agil, Klein, Lizbeth, Silica, and Argo followed the rumors of Asuna's appearance in ALO and jumped into Alfheim to help Kirito just before the transport.
Grey and Gray Morality: The Reconquista Rebels and the Albion Royalists. Some of the people fighting on both sides truly believe in their causes but some of their leaders evil and do nasty things to the commoners whether they be friend, enemy or neutral.
Lethal Joke Character: Kino. In SAO his inability to stick to a single set of skills turned him into a Master of None who wasn't worth much in combat and wound up being used by his guild as an errand boy. In Halkeginia however his skills have proven to be far more useful, giving him flexibility unmatched by front-runners who specced for full combat builds like Asuna.
Meaningful Name: Word Of God says that pretty much every new character in the Tarbes arc has some cheap meaning behind their name. For example all of the pixies had their names chosen for their meaning in Hanakotoba. According to the author: "So yeah, I've been on cheap name meaning bent this arc."
Oh Crap: What happens to all of the Gamers now that ALO is real. Also, to greater extent due to circumstances, Asuna when she stabs an Albion Rebel in the heart with a dagger, and he chokes for a few seconds before dying without his body disappearing.
She was delicate, she was exotic. Skin so pale it was almost translucent, contrasted against jet black hair that spilled down to the middle of her back. Dark golden eyes, strangely shaped but alluring nonetheless, were set into a delicate face with thin crimson lips. Her beauty was enough to make his mind forget to question the peculiarity of such a young woman carrying what seemed to be a sword strapped to her back, or the top of a metal breastplate that peaked out from the collar of her cloak.
"Midori" has difficulty fighting at first because her new body has a different "reach" than her real one. Also, see below.
A lot of spells and effects in ALO also work differently in the "Real world" of Halkegenia. For examples:
Faction Disguise. Who you scan for races that does not exist in ALO is important now. See "Midori".
Chugging ALO potions will have adverse effects. Especially on humans. An example is a Ressurection potion which just as much chance of kill a human as saving him. A note elsewhere advised not to drink more than 2 potions and it would be better if no potions are drunk at all.(and this for a batch of "mundane, common MMO" Mana potion, Haste potion and 2 different Heal potions)
There are now no Immortal Objects, which means destruction of terrain is now a real thing. Cue all kinds of speculation both in-game and out of it. One more or less aborted arc involves the Fairies trying to clear the Guardians using this change, by destroying their spawn points. There is at least one mage whose spells have entered Overpowered territory because of this: enemies used to be able to hide behind Immortal Objects cover...
Mobs now have intelligence. Even if most have animal-levels of instinctive intelligence this causes problems initially as the Fairies used to fixed attack patterns got themselves surprised, and later when boss monsters use their new smarts on Mob-extermination groups. Also, Pixies.
Riding The Bomb: How the Fae guide their ship-launched bombs down to their targets in York as the opening shots of Operation Dunkirk.
Recursive Fanfiction: Has spawned stories written by readers that are considered canon to the story.
Stiff Upper Lip: Played with. Silica doesn't have the wit characteristic of this trope and she's not completely blase about being separated from her family again, but her experiences in SAO taught her how to keep cool in a crisis and she exhibits this behavior enough to be a calming presence on the people around her.
Succession Crisis: Only five of the nine faction leaders were online at the time of the summoning, leaving the remaining races (Puca, Gnomes, Undines, and Imps) in varying states of disarray and confusion.
Suicide Mission: Operation Dunkirk. Lord Mortimer and General Garmont are working hard to increase the odds as much as possible.
Sure, Why Not?: Sakuya is a history buff, and Alicia Rue is much older than she looks.
Useless Useful Spell: In the original series Louise's default explosions only did some non-lethal damage and destroyed the surroundings. During the Tarbes arc she blows up a boss that required a small army to fight. With a single spell.
Villainous Breakdown: Sayuri loses it when not only she loses the leadership of the Pixies to Botan, who was against her insane plans to kill the humans who helped them against the Pixie slaver Fernand, but gets saved from being eaten by a fish by Count Arthur, the human who took care of her fellow Pixies from her home and all of the Pixies agree with Botan to make peace with the humans and ask her to stop fighting and rest since she's suffering from Survivor Guilt.
The War Room: We see the one in Tristain royal castle. Other fortifications usually have something similar.