
THEORY: Shirou might be Archer???
Both are extremely well-adjusted in projection magic and Archer has the same heart pendant that Rin used on Shirou to save his life after Cù stabbed his heart and the most damning evidence is that in HF it should be impossible to join two separate spiritual bodies but somehow him and Shirou are a special case thus the transplant of his arm onto Shirou didn't result Shirou dying of shock
idk guys thoughts on this theory