@ItsGirlCraft Hm. Yknow what? Let's just. Jump ahead and go to those parts, screw chronological order. Twisted Rainbow has some of the most interesting concepts, personally speaking. The original TR timeline is dead, unlike the others... because TFC's impact on Twisted Sabre was so severe, Sabre...well, he died in the process of destroying the TR universe within his mind to take revenge and take back control. Being a universe within his mind, his body is still floating out in the multiverse... finally empty.
The Roleswap occurred when Origin died after the destruction of the TR universe. Or, well, was supposed to. Roleswap is... not just a trope here. It's... something else. Something alive within this AU. Something that forms when there are deeds undone and second chances needed. In some ways, it's both a curse and a blessing in one..
Because the original TR Sabre died alongside the TR universe, he cannot be given second chances. Instead, the Roleswap chose Twisted Shadow. (Totally not bc he's My Favorite, nooo, totally not) Except, because Reasons, only Shadow and Sabre swap places. There is a crackfic variant where everyone swaps, but that's not relevant. I might just post my various AU rambles including it and other crackfic variants later.
TFC is somewhat experiencing a mild time loop, at least from his POV, being an immortal creature and such. He knows what the original timeline was, and despite the knowledge that Shadow tried to change, he doesn't expect Shadow to rebel against him. Just like TR Sabre, Origin and TFC are voices in Shadow's head - Origin providing him with his true name, Shadow Sabre, and TFC encouraging the use of the sword (I call it the Cursed Sword).