Ooh, starting off with the hard ones, anon. Hm, to be honest? The heart says yes. The brain says no. And I think given that it shakes out to a maybe, I should at the very least do a brainstorm.
But here’s why the brain says no, first:
A) Ideally, in order to do a mash up of two fics, the two fics should probably be written before doing said mash up – but, I mean, that’s hand waved away because mostly that’s to get the necessary background/premise across and I suppose so long as someone reads the brainstorm first or I insert it into the mash up fic then I should be okay…
B) It’s Kakashi. DOUBLED.
And, okay, so. I love Kakashi. He is my favorite disaster string bean. And I definitely know that he’s internally always mourning and externally irreverently apathetic, but it’s somehow very difficult for me to capture his voice. I know what a good one sounds like when I read (definitely looking at wafflelate/frolic’s Kakashi voice which is phenomenal!) but I can’t quite seem to grasp it for myself.
I mean, those are the main two, really. I have a few more world-building issues… but those are less concerns and more puzzles that I’d happily sink my mental teeth into for a few minutes/hours (primarily how to structure the Tsukuyomi coherently).
Now as for a proper brainstorm for the mash up… hm… I don’t know what else would be in this that I haven’t already at least briefly mentioned in either the original FBFW and Desperate Endeavors brainstorms.
Maybe if I do more of an outline storyboard kind of thing?
First Scene: Kakashi, at the beginning of Tsukuyomi, the canon awful experience of being drawn up and stabbed a whole lot by Itachi. And given that this is Kakashi who is like, the worst at not antagonizing people with how casually dismissive he is, no doubt he’s not going to make a sound even if it’s ~LITERAL TORTURE~. That is, until the Itachis announce that they’re going to do it all over again. And at that point Kakashi probably says something like “I’d rather you not.” Or something to that effect, coughed out in bloody gasps but still dryly unimpressed.
Except it’s not just the one Kakashi that says this. It’s BOTH Kakashis. And so Kakashi, the Kakashi that we’ve been in the POV of, finally notices that he’s not the only one getting tortured. End scene.
Second Scene: Flashback. Snippets of canon!Kakashi’s life as he Dreams of DoS!Kakashi’s life. And, like, for a good decade or so after the Dreams start they’re pretty much the same (because I’m gonna go off the idea that Dreams only start happening when an Anomaly, aka Shikako, exists to create a difference between worlds. Or, rather, it starts after the Kyuubi event which most people think is the cause but actually it’s the Shrödinger’s Shikako who died due to Kyuubi chakra exposure in one world but survived in the other because of SQ soul) since Kakashi never directly interacts with Shikako until graduation. But he does see differences between how happy Naruto is, or his occasional interactions with Shikaku vary a bit. And I think actually this first flashback “scene” would end after canon!Kakashi wakes up from Dreaming of his assigned team genin being VERY DIFFERENT.
Third Scene: Both Kakashis, now highly aware (and unimpressed) with each other, sort of plan how to escape. In a version of this torture in which they are by themselves, I don’t think they would bother, but I think being with another person (even if that other person is himself) would sort of spur on his “can’t let anyone else see how much I hate myself and think I deserve awful things” (because Gai once told him that that’s maybe not so good to air out in public and if GAI thinks something shouldn’t be screamed to the village en masse then it’s probably something to be suppressed violently). And at first they don’t quite understand what’s happening (but Kakashi is a very smart string bean) and as soon as one of them says something like–Itachi’s not going to be satisfied with just me. He’ll go after my adorable little genin. And canon!Kakashi would say something like, “Sasuke would throw himself headfirst into this situation.” And DoS!Kakashi responds with something like, “Not if Shikako beats him to it.” Boom. That’s the difference between the two of them.
Fourth Scene: Some more flashbacks from canon!Kakashi’s POV of living in canon but Dreaming of DoS and preferring the latter (because… oh canon… you had so much potential). And however someone with a better Kakashi voice would say he would express (or not) his envy at DoS!Kakashi. And he Dreams of how the Chuunin Exams shook out differently in DoS (although, he did Dream of the warning that Orochimaru was there, so in the month of preparing, he did pass along Shikako’s warning and such so the village does fare off better than actual!canon). And I think there’s definitely some canon Kakashi and Sasuke training where they both wake up from Dreaming out in the desert and stoically don’t mention how in their Dreams yesterday Shikako trained with them. Anyway, etc. etc. The morning before Itachi arrives to ruin everything, canon!Kakashi wakes up from a Dream and idly wishes that he could meet Shikako. He is about to get that wish.
Fifth Scene: The Kakashis, both being geniuses (genii?) even better than Itachi (also, these Itachis are weird pre-programmed automatons so they’re especially inferior) do manage to escape. Now they just have to find their adorable students. Canon!Kakashi tries not to passive aggressive too much about HOW DARE DOS!KAKASHI PUT SHIKAKO IN DANGER SHE’S PROBABLY THE BEST THING THAT’S HAPPENED TO HIM IN LITERAL DECADES, but DoS!Kakashi is just like. Hypocritical much? I don’t know. I’d use the word snark, but that seems too friendly for where they’re at right now. And arguing is a little too active. Sniping at each other, maybe? I dunno. But that segues straight into…
Sixth Scene: Shikako, seven years old, running away from an Itachi automaton.
(It’s at this point where I’m not sure if I would switch POVs to see what Shikako did to escape her torture bubble or stick to the canon!Kakashi POV since that’s what the past five scenes have been. But regardless of if it’s show via Shikako’s POV or tell to canon!Kakashi’s POV, it kind of is just that Shikako and Sasuke’s torture bubbles were near each other (since they were intended to be the same thing) and like with the Kakashis Shikako could hear Sasuke. Unfortunately, Sasuke–being the traumatized literal child that he is–couldn’t hear Shikako. So Shikako could “escape” her torture bubble, but when she tried to break Sasuke out of his, the Itachi automaton programmed to torture her wouldn’t let her. So she was tactically retreating to plan a better attack when she stumbled upon the Kakashis.)
Which then segues into…
Seventh Scene: Story time has delayed all of them and now the horde of Itachi automatons have caught up. At first they try to run, but eventually the Kakashis have to fight while tossing Shikako back and forth to each other because she is in the body of her 6/7 year old self and has very short legs. canon!Kakshi has a thought, something about how–even though he was berating his DoS self for not protecting her–now that he’s partially responsible for not getting Shikako killed he is absolutely terrified of fucking up. (Because… Kakashi) And a very powerful thought of “I can’t let her die.”
Eight Scene: Flashback. The day after what would have been the family dinner post Wave mission at the Nara household. canon!Kakashi doesn’t mean to loiter outside the Nara clan compound like the most awkward and sad string bean that he is, but he just Dreamt of the best night of his life. He was actually happy. And that hasn’t happened since… shit. Before Obito died? And the Nara guards (or watchers) vaguely understand because it’s no surprise that everyone in the Nara clan Dreams of what it would be like if the daughter had survived and know that Kakashi would have been her teacher, but they don’t exactly know why today he is loitering. Except Yoshino does. And she comes to the gate and invites Kakashi for tea in such a way that he can’t awkwardly run away from, as is his usual response, and so there’s the two of them. Staring at a camera that doesn’t have a picture of DoS Team Seven. It’s all very sad and very lovely.
Ninth Scene: Haha! Tricked you, I just didn’t want to write an entire fight scene. 😛 Anyway, the Kakashis successfully defeat this batch of Itachi automatons but being paranoid for good reason means they suspect that more are incoming. Shikako is a little nauseated from being thrown around like a hot potato during the fight, but she takes charge because otherwise the two Kakashis would get too caught up in their passive aggressive fight to get anything done. They have to figure out how to save Sasuke from his torture bubble.
… and then I would end it here because open endings are cool… and also it’s at this point that I have no idea what to do next. I mean do they save Sasuke immediately or do they have to outsmart the Itachi automatons because they’re all acting the way the immune system does.
Basically I’m trying to figure out whether or not they should have Sasuke with them while they go around on their information scavenger hunt. Would it be better to for Sasuke to know that Danzo ordered the Uchiha Massacre because they were planning a coup? Or is it something that canon!Kakashi has to decide whether or not to share? (Oh god, Kakashi is going to fuck this decision up real bad no matter what he chooses)