Okokokok so I'm a sucker for alternate universes and the such for my favorite fanfic crossovers, but what if I crossover the crossover with another one of my favorite media.
Bloodymary x The Shades of Magic series
Where Simon is an Antari from White London who was like, imprisoned or something (maybe not dissimilar to Holland?) and then escapes to Red London where he falls into the [Red River I Forgot The Name Of] to like, parallel the blood ocean and stuff
And then Grace is just a Regular Guy™ (probably with the same/adjusted backstory for the time frame) from Grey London (except he isn't actually) but one day he sees a fancy floating thread of _something_ and follows it and turns out that the weird invisible-to-everyone-else thread was **magic** and apparently he sees magic???
And then that's how he clocks Simon as an Antari even though he's prolly super scarred up and doesn't got the black eye (even though Grace wouldn't know what the black eye means) 'cause that guy is single-handedly the most magical guy he's ever seen and a different shade of magic than anything else he's ever seen (silver, Antari have silver threads)
Anyways I've no clue how to involve Stratt or the petrova line or the iron lung or rocky or like; the plot from the base book/movie and game/movie but this has been stuck in my brain and I wanted to share it with the Internet :3