To be honest, I really don't understand why FGO fans are so desperate to ship their two bland self-insertion FGO protagonists with each of the heroines who already have a official canonical pairing in the franchise (e.g., Arturia, Jeanne, Nero and so on), although aware that these heroines will never be your waifu, nor from the two bland self-insertion FGO protagonists, or from any other mobage characters, because these heroines are already officially canonically paired with another character in the franchise. The sad fact is that most of these FGO fans blindly believe their own bullshit/fanwanks/headcanons, and also that these doujins and fanarts based on headcanon/fanwank/fanfiction are real and canon.
To be honest, I really don't understand why FGO fans are so desperate to ship their two bland self-insertion FGO protagonists with each of the heroines who already have a official canonical pairing in the franchise (e.g., Arturia, Jeanne, Nero and so on), although aware that these heroines will never be your waifu, nor from the two bland self-insertion FGO protagonists, or from any other mobage characters, because these heroines are already officially canonically paired with another character in the franchise. The sad fact is that most of these FGO fans blindly believe their own bullshit/fanwanks/headcanons, and also that these doujins and fanarts based on headcanon/fanwank/fanfiction are real and canon.