Queen of Shadows: A Tale Across Ages is a Jackie Chan Adventures fanfic, and a part of Project Dark Jade. Originally written by one of the project’s co-founders, Nocturne no Kitsune (though it was simply called Queen of Shadows at that point, hence the page name), after he dropped out of sight, Eduard Kassel, the other co-founder, adopted it and added the "A Tale Across Ages" tag to the title.This fic diverges from canon at the end of the Demon Portal arc, where Shendu’s plan to rewrite reality spirals out of control, leading to Jade ending up in the body of a Shadowkhan Queen in Feudal Japan. Now, Jade has to keep her true identity secret from her "loyal forces" and find a way to get her old life back before her identity is discovered, or some other fate befalls her.
As You Know: The ritual for creating new Shadowkhan starts with Sanshobo ceremoniously reciting the origins of the race. Ikazuki comments to himself that every Shadowkhan already knows this, as its one of the first things they learn.
Badass Bureaucrat: Technically all the Generals, due to being as much administrators as warriors, but Ozeki seems to be the only one who enjoys it.
Badass Pacifist: Nonki is called "The Peaceful Musician", but in his first scene, he uses his music to hypnotize a Jerkass noble and his entourage and then rob them blind.
Baleful Polymorph: The shift caused by Shendu’s botched alteration of reality turned Jade into a Shadowkhan queen (she bemoans the fact that she’s become physically weaker due to this).
Big Good: The Ben Shui Chosen One still exists in this universe, and is somehow keeping Shendu's Asian empire from expanding westward out of China.
Becoming the Mask: Unknown to herself, Jade has started doing a better job of being the Queen than the actual Queen. The Yojimbo is quite pleased to note what he mistakes for Character Development in her after hearing her reasoning for her behavior at the first meeting she attends.
Brought Down to Badass: Jade may have lost a belt level or two of Waif-Fu due to the Queen’s body being physically weaker (and not being able to do much to strengthen herself again), but she is still a Genre SavvyGuile Hero, and has (so far) managed to remain undetected as an impostor, and is planning how to get out of the situation.
When reminding herself that she doesn't need her fighting skills to get stuff done, Jade remembers the events of the canon pilot, where she used only wits to Out Gambit Tohru and keep the Dark Hand from getting the Rooster Talisman.
Dead Fic: Subverted — Nocturne dropped out of sight, leaving the fic unfinished, before Eduard eventually adopted it.
Did You Just Scam Cthulhu?: So far, Jade has managed to fool all the Shadowkhan into thinking that she’s the Queen, even the Queen’s personal bodyguard.
Disappeared Dad: The Queen’s father is a no-show. Though a passing comment by Ikazuki suggests he was Chinese.
Divine Parentage: The Shadowkhan Queens are said to be descended from a Japanese goddess in the Histories (confirmed to be Izanami in chapter 6), and the male Shadowkhan certainly tend to regard the Queens as divine.
Due to the Dead: Subverted. Kyouaku tosses anyone who dies in his naval battles overboard, whether they were his enemies or his crew.
The Empire: The Shadowkhan, who have already conquered Shikoku and a large portion of Kyushu, with plans to conquer all of Japan.
There's also Shendu's empire, which controls roughly half of China (and a chunk of Southeast Asia).
Establishing Character Moment: Each member of Rokutaro's Inner Circle got a scene of them making their way to Tobe, introducing them and giving us a good idea what they're each about.
Each of the Generals get to showcase their personalities in their first appearances.
Gone Horribly Right: Shendu tried to alter reality, but an accidental slash across the Book of Ages caused different changes than he wanted.
Great Big Book of Everything: The Histories of Eternal Shadow, a massive tome containing the sum knowledge of everything that's ever happened to the Shadowkhan, including biographies on all their Queens and Yojimbos.
Legacy Character: Hiruzen, the current Yojimbo, is the second one to bear the name.
It seems every General of the Sumo tribe is called Ozeki.
The Queen that Jade has replaced is the 98th, with the 96th being the one that started the war.
Lesser of Two Evils: Jade knows she is expected to start the war with the humans back up again, and can't avoid it without raising suspicion. So, she devises a war plan that should minimize human civilian casualties while giving the heroes she believes are based in Tobe a chance to defeat the Shadowkhan.
The Magnificent: All the past Yojimbos listed in the Histories of Eternal Shadow are given titles of some kind after their deaths.
Kyouaku is known as "The Pirate King" and "The Butcher (or alternately, The Devil) of the Japanese Seas". And he prefers the latter.
Missing Mom: It is mentioned that the 98th Queen (the one who’s life Jade is trapped in) lost her mother at a young age. And it should be noted that she died well before what is implied to be normal for a Queen, possibly implying foul play (for his part, Hiruzen suspects Shendu's involvement, but can't prove it, though fans of the show should note that Tarakudo was part of her guard on the trip, which implies he may have had a hand in it).
Mook Lieutenant: Jonin Toda to Hiruzen. The job used to be Tarakudo's, but he disappeared with the last Queen and is presumed dead.
Mook Maker: It seems that each Queen regularly undergoes a ritual to create new Shadowkhan from the Generals' chi.
My Greatest Failure: Hiruzen feels this way about letting the previous Queen go on what turned out to be a suicide mission.
Non-Action Big Bad: Seems to be the case with the Queens, who are forbidden from fighting, leaving it to the males.
Nobody Poops: Jade realizes at one point that she hasn't needed to go since finding herself in the Queen's body. It’s justified because she’s currently in the body of a non-human entity with powerful magical potential.
Offhand Backhand: Kyouaku does this with a sword to kill the Ika tribe (Squid Khan) captain of a ship he just captured.
Out-of-Character Alert: Jade is trying to avoid what she feels qualify as these, in order to keep the Oni from realizing that she's not the real Queen. That said, the Generals do note that "the Queen" is acting unusual, but for the most part write it off as her being anxious over the upcoming ritual.
Parental Substitute: It's hinted at that Hiruzen has been this to the Queen prior to Jade replacing her.
Praetorian Guard: Whichever General holds the position of Yojimbo, it appears their tribe acts as this to the Queen. Currently, it's the Shinobi.
Protectorate: India and Central Asia seem to be under the protection of the Chosen One, who is keeping Shendu's empire from expanding westward.
Reality Warping Is Not a Toy: Shendu tried to use the Rewriting Reality powers of the Book of Ages, like in canon, to recreate the world so that he and his siblings ruled, but accidentally damaged the Book and lost control. His fate in the new reality is currently unknown (though passing references do suggest he's still in control of China, with other Asian states as tributaries).
Since Nocturne and Kassel came up with the project together, the origin story of Kagehime and the Shadowkhan in general is largely the same as in Queen Of All Oni (though Word Of God states that Nocturne came up with it to use in Queen Of Shadows first).
What Happened to the Mouse?: Several reviewers have commented that one of the tribes (the Mini Khan) are missing, with everyone in-universe acting like they don't exist.
Also, unlike in canon, so far we have seen no trace of Jackie and the other members of the J-Team. Heck, we don’t know if they even exist here!
Likewise, it is currently unknown if Shendu’s siblings are free or not.
Chapter Six apparently confirms that they were indeed sealed away.
What happened to the Queen’s consciousness when Jade was shoved into her body is also unknown.
You Are Number Six: When speaking of the Queen amongst themselves — and when formally addressing Jade directly — the Generals refer to her and her predecessors by number, Jade being in the body of the 98th Queen, with the 96th Queen being the one that started the war.