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teecupangel · 1 year

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I would LOVE to see a crossover between demon slayer & assassin’s creed , like it was something that I’m dying to see ever since I got back into the AC franchise in October.

Also I think you should know about Edward, Shay, and Evie JPN VA’s , BC HOLY SHIT

Kenjiro Tsuda is Edward and NOBODY talks about it and the man is a LEGEND along with the other legends! I relate Edward and Kishibe from CSM bc they both love booze and women. Evie voices Annie from AOT and Shay does Caesar from JJBA battle tendency

(This is kinda an offshoot of this 'what if AC and Demon Slayer characters with the same jp voices meet' idea)

Alright, before we go gushing over the jp voices of the other main characters, let’s first talk about an Assassin’s Creed x Demon Slayer Crossover.

This… will have spoilers for Demon Slayer so Imma put it in a Read More. This will take the backstory of both Demon Slayer and coat it in Assassin’s Creed Isu Bullshit to make this more on the side of ‘two series getting blended together with Isu ice’ crossover than a ‘these characters appear in this series’ crossover.

Game?

Okay, let’s do this.

(sidenote, my fingers are so used to typing Desmond that whenever I want to write Demon, it usually goes “Desmon” so if I missed any Desmon misspelling, let me know XD)

So, Muzan’s experimental treatment happened during the Heian period (794 to 1185) and we won’t get into that much detail about this time but the year is important because this is smack dab (1090) in the middle of the year the Assassin Brotherhood was created (or had transitioned from the Hidden Ones).

So, in this crossover, the experimental treatment that was supposed to save Muzan was created using a failed Isu experiment that an off-branch of the Order of the Ancients have found and were doing human experiments to check if it was possible to use it to prolong their lives like the legends of the misthios who was still hunting them down.

Now, we are using the Order of the Ancients in this one for one simple reason: the Templar Order is still building its presence from the ashes of the Order of the Ancients’ main branch in England and is currently under the ideology of King Aelfred. They’re too busy preparing for their ‘grand entrance’ to do human experiments at the moment (and many members would consider such thing beneath them or against their personal interpretation of the Order of which the Templar Order was meant to usher in).

So, Muzan is gets turned into a demon by this experiment and the Order of the Ancients became his first victims and he tortured + experimented on them to learn the truth. By the time Kassandra gets there, it was already too late. Muzan has created his first few demons to create that specific demon that might ‘cure’ him. Kassandra’s high Isu genes meant that she could do feats that normal humans cannot do and these skills gave her an edge in fighting the demons together with the hidden blade she now possessed.

She managed to take down the demons Muzan created (which was a good thing because they were about to tell Muzan about the Isus) and she fought Muzan as well. Unfortunately, she was unable to defeat him and Muzan tries to turn her into a demon as well… to enslave her to him.

The Isu ‘tech’ that was used to make Muzan into a demon reacted to Kassandra differently though and instead she seemingly died after having a severe seizure.

Muzan left disappointed but an hour later, Kassandra gasps as she opened her eyes.

She doesn’t know what happened and if the Staff had been the one to save her or not but she retreats for now, knowing it would be futile to take Muzan alone.

She needed allies…

From Heian Period to The Third Crusades/Kamakura period:

Kassandra makes contact with the Ubuyashiki family and helps in the creation of the Demon Slayer Corps (more as a secret co-conspirator because she knows Muzan would hunt her and the Ubuyashiki family if he learns she lived)

She tried to contact the Hidden Ones as well but learned that the Hidden Ones are no more, having been absorbed by the Assassin Brotherhood who are currently ‘unavailable’ so Kassandra is on her own at the moment.

Kassandra would leave Japan to finally contact the Assassin Brotherhood once she was sure that the Demon Slayer Corps could handle their own. She meets with their current mentor, Altaïr Ibn-La'Ahad, to talk about the demon problem in Japan.

Altaïr joins her in Japan to check the situation himself, leaving the Brotherhood to Malik Al-Sayf, and they learn that the Apple cannot control them at all yet they could be misled by the Apple’s illusions. It’s thru Altaïr’s studies with the Apple that they learn why Kassandra survived Muzan trying to turn her into a demon. Those with high concentrated Isu genes have varying immunity to being turned into demons and there is a defense mechanism in play in certain individuals to keep them from turning into demons. Altaïr says that this mechanism is only in certain people and, if they drink blood from either Muzan or Kassandra (who has been ‘infected’ in a sense), they would gain a similar immortality that Kassandra possessed.

Things happened, the demons attack, Altaïr is wounded saving the current Oyakata-sama and Kassandra berates him for being reckless. Altaïr tells her that his wounds are too severe so Kassandra agrees to let him drink her blood. Altaïr doesn’t turn into a demon but is revived as effectively an immortal like Kassandra (although the infection made the Staff’s immortality setup moot, making both Kassandra and Altaïr not age but be able to die if their body takes too much damage). Altaïr returns to Masyaf to make preparation to branch out the Brotherhood before it became clear he was no longer aging.

Once everything is done, Altaïr relinquishes his title to Malik and tells everyone that he will create a Brotherhood in Japan. The Japanese Brotherhood would look after Templar activities (which seemed to be in the bud at the moment) while helping the Demon Slayer Corp in their endeavours to kill demons and find and take out Muzan once and for all.

Unfortunately, Kassandra and Altaïr’s appearances made Muzan realize that, if he wants to survive and reach his goal, keeping his plans in Japan is not the way to go.

They hear rumors that Muzan left Japan and now Kassandra and Altaïr go their separate ways to try and find Muzan.

Sidebar: Altaïr definitely went to the Island of Tsushima to fight off the Mongols and he reunites with his oldest son Darim there who told him that Sef is now the mentor. Altaïr gives Darim his Armor of Altaïr (that’s not the original name, Altaïr named it the Sunlight Armor but… uuhhh… the name got changed later on due to… time) and the eagle sword forged in Scarlet Crimson Iron Sand and Scarlet Ore. He has his own nichirin sword and he warns Darim that if they were ever faced with an enemy that seemed unworldly, use his sword or their hidden blades.

The original hidden blades used by the Hidden Ones (most of which were used by the Assassins in Alamut and Masyaf) were forged from Scarlet Crimson Iron Sand and Scarlet Ore as well. It’s unclear where the Hidden Ones got the ores and sands but Kassandra has an inkling it’s connected to a mysterious merchant ally of the Hidden Ones that she only heard the name of “Thousand Eyes”. Altaïr had requested that more hidden blades be created for the Brotherhood in Japan and that they ship a few of them to the other branches to give them a chance in case a demon gets there.

Renaissance Italy/Muromachi(Sengoku) Period:

Altaïr gets to Italy because he learns of an Apple being transported into Venice. By the time he gets there, the Apple is in the hands of Ezio Auditore who had retaken it from the Templars after an epic punch out in the Vatican. He managed to get to the Italian Brotherhood’s main headquarters, Monteriggioni, just in time to warn them about the army he saw on his way to them.

A lot of people do a doubletake because, yeah, he looks a lot like the statue of Altaïr Ibn-La'Ahad but he just waves it off as him being a descendant because there’s no way he was going to say ‘yeah, I’m the real deal and I’m sorta immortal at the moment because there is a much larger problem than Templars right now.’

He helps them protect the town but they knew that they had to leave. The Papal Army will return with more soldiers and they wouldn’t bat an eye razing the entire town into the ground just to ‘clean’ the taste of defeat from their mouth.

They all go to Rome with many of the civilians joining them and Altaïr gets sucked into the whole ‘let’s get all of Rome against the Borgias!’ plan.

He and Ezio become friends and he also becomes a close advisor to Ezio’s early years as a mentor, just to help him get to his feet and figure out by himself what kind of mentor he wants to be.

Ezio also lets Altaïr study the Apple and the two Apples resonant with one another, showing Altaïr and Ezio a blurry vision of someone. Ezio believes that person is the one the goddess call Desmond. Altaïr doesn’t understand why but he also believes that Ezio is right. That person is Desmond…

Cesare still poisons his father and runs away, Ezio and Altaïr chase after him but Altaïr is distracted by the appearance of three demons who tried to kill him while Ezio continued to chase after Cesare. Feeling dread in the pits of his stomach, Altaïr takes care of the three demons and tried to find Ezio and Cesare.

He’s just in time to see Cesare pierce Ezio’s stomach and it was clear that Cesare had become a demon, Ezio didn’t let that deter him, using the sword Altaïr had given to Darim all those years before to behead Cesare. As his head and body fell to the cliff below as it disintegrated, Ezio falls to his knees.

Altaïr gives him his blood before he dies because he knows, something inside him knows, that Ezio is one of the people with the defense mechanism. Ezio is revived and he returns to Italy with Altaïr.

After he was sure the Brotherhood would be okay even if he was no longer the mentor, Ezio joined Altaïr in traveling to Masyaf because Ezio had a vision when he was turned of a castle that, when he described it to Altaïr, sounded a lot like Masyaf. Although Altaïr has no idea what this supposed door underneath Masyaf was meant to be. There was no door there before.

The Ezio-Sofia thing happens in the background and it takes them longer to find the memory seals (which now contain memories of Sef). The last memory seal they find is actually in Sef’s resting place in Alexandria and Sef directly talks to Altaïr, “Father, I know you’re out there somewhere. I made all of these because of a dream I had. I cannot truly explain it but… there is something in Masyaf that must be kept a secret until you return. Once you see it… you will understand what must be done to keep the world safe from the darkness crueler than the Templars will ever be.”

When they finally entered the underground ‘garden’ (as legends go, it was a garden that Sef had tended every day), it’s dark but they could see something blue glowing at the center. Once they were close enough, they realize it was a flower bed of blue spider lilies.

And, in the center of the flower bed, a man was sleeping. No. He wasn’t moving at all.

Was he dead?

They cautiously stepped closer and the moment Ezio and Altaïr were by the edge of the flower bed, the slightly glowing blue spider lilies glowed brightly before slowly losing all colors, turning into white spider lilies. It started from the edge then slowly moved inward until the last blue spider lilies to lose their color were the ones underneath the man.

A second pass…

And the man gasped as he sat up.

He turned to look at the two men staring at him and blinked as he called out, “Altaïr? Ezio?”

They don’t know how or why but both of them answered, “Desmond…”

Dun dun dun!

Yup. Ending it there at the moment because this was getting looonngg. I’ll continue with the Kenway family drama another time (and, this time, we get Kassandra and Edward duking it out in naval combat).

I am thinking if we should make Haytham and Shay immortals OR, let’s add lots of Kenway family drama in this one (as well as Dorian-Cormac feud) by making them both demons instead (and they’ll be part of the Twelve Kizukis). I’m honestly leaning toward the latter XD.

Sorry if this was light on the Demon Slayer characters but the main characters of Demon Slayer won’t be born until the Taisho Era (1910ish) but, at that point, you bet the story would be much more different since there’s gonna be butterfly effects.

Other than that, yes, we are making Desmond the living embodiment of the blue spider lilies that Muzan was looking for because I show my love to Desmond by making his life complicated XD

========================

Now, let’s gush over the JP voices of the other AC main characters.

Before anything else…

Desmond Miles is voiced by Hiroki Tōchi

Who voices as a lot of older men types (Malik from Tales, General Cross from D.Gray-man, Ovan from .hack, Mael from Seven Deadly Sins and Klaus from Valkyria Chronicles) which I find funny. He’s also the jp voice of Gavin Reed (Detroit Become Human), Chris Redfield (RE) and Nathan Drake (Uncharted).

Funny thing? He voiced Toki from Fist in the North Star in the 2010 anime adaptation BUT Tomokazu Seki (EZIO) took over for the 2010 and 2013 video games.

AND to make things even funnier, Haytham is voiced by Kenyu Horiuchi who voiced Toki in the 2023 Fitness Boxing game and the Legend of Raoh anime. XD

(honestly, there’s a lot of Fist of the North Star voice actors in Assassin’s Creed with Altaïr’s voice actor being one of the go-to voices of Kenshiro XD)

Edward Kenway is voiced by Kenjiro Tsuda (yeeesss, he’s definitely a Legend! He’s freaking Seto Kaiba!)

He also voiced Gris/Gregory from Fire Emblem, Luis Sera from the RE4 remake, Zeke from Xenoblade Chronicles 2, Zaveid from Tales, CHIKAGE from Hakuoki, FIRE EMBLEM from Tiger & Bunny, TATSU from The Way of the Househusband, NANAMI from Jujutsu Kaisen, Overhaul from MHA/BNHA, and have I already said that he voiced Seto Kaiba from YuGiOh? Yeah? Well, he voiced Seto Kaiba from YuGiOh. I think the best part is that he voiced Hannes from AOT. Hhhmmmm… parental figure to a main character that has dirty blond hair and is using alcohol to cope with the bad shit in his life only to die in front of said main character? Lollollol (also, also, Kishibe, Hannes, and Edward would definitely try to drink each other under the table)

Evie Frye is voiced by Yu Shimamura

As @ullyaboo has already said, voiced Annie in AOT, she’s also the voice of Zelda in TOTK, Mature in 2018 King of Fighters game (who was usually voiced by Hiroko Tsuji), Cindy from FFXV, Shinobu from JoJo, and Ilina from Chaika.

Once more, Rogue’s voice actors are not in Behind the Voice Actors so I had to doublecheck with the jp wiki. XD

Shay Cormac’s voice actor is Takuya Satou

Who voices CAEEESSAAARRRR in JoJo (sidenote: Old man Joseph is voiced by Unshō Ishizuka who voices William Miles XD), Machias from Trails, Albert James Moriarty from Moriarty, Conrad and Abel from Fire Emblem, and Alphen in Tales.

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