RUBS MY HANDS TOGETHER. I'd have to say woleverse is my current favorite au... Robin just gets to have such a fascinating character deterioration arc as a Garlean-captured experiment-turned-weapon, manipulated and brainwashed by Aulus mal Asina into hunting down the Warrior of Light (his childhood best friend, Aurora ;)), but then realizes everything was orchestrated by the Ascians and just goes rogue... until he grapples with his complex feelings towards Aurora and, how Rora never truly saw him as an enemy -- just as, someone who was scared and angry and lost -- and always just wanted him to come back home.

Robin has to deal with the consequences of his actions and all the crimes he committed, believing himself unworthy of atonement. And yet, Aurora would never give up on him. With Aurora's gentle guidance and acceptance, Robin gets to have his little rollercoaster of a villain-turned-antihero-turned-redeemed hero arc and he falls so deeply in love it makes him look stupid (positive). This one isn't a canon timeline, though! Because Aurora is Azem in this one instead of Robin-

Toxic AU on the other hand follows the same basic principle of Robin getting captured by Garleans and turned into a living weapon by Aulus and co (as the blueprint for both project Resonant AND the Black Rose), but this time Aurora gets captured with him :) It's a fun little play on "the ONE timeline where they get to grow up together and Robin was never exiled, but it still ends Horribly because they are both marked by fate for a tragic end no matter what." THIS one gets to be a canon timeline <3 It ends with them managing to escape Castrum Abania finally, but Aurora is just too weak to make the trip back to the Shroud without life support and dies in Robin's arms... that's the tl;dr of it, but I can yap more about it in detail another time hehe