Fan CastingFate/hollow ataraxia(Live action sequel to Fate/stay night Disney+ adaptation)

It's been 8 months since the Fifth Holy Grail War ended. Shirou Emiya is happily living with Taiga Fujimura. Sakura is living with Rider by herself with the riches that Zouken left behind. Shirou also has his girlfriend in Rin Tohsaka. However after Rin accidently distorts space and time while doing a magical experiment, Shirou find himself in a parallel world similar to the one he lived. Only better in nearly every way. Everyone he loves is alive and happy, however he loses out on his girlfreind and may jot be able to see his Rin again if parallel world Rin is not able to find out more about her failed magical experiment in London. Furthermore, danger again learks in the shadows as keeps seeing a mysterious girl named Caren. Shirou also finds himself in a timeloop. Reliving events in his life during the Fifth Holy Grail War with a girl names Brazzett who he has never seen before. As well as her psychopathic servant, Avenger.