Nasu: No, not at all actually. When I was studying the person Miyamoto Musashi historically, I found out that tale of Musashi was happening around the same period as when the concept of "Mu" from Buddhism entered into Japan recently. And thinking about it, I thought it was impressive that Musashi's Father claimed to be a Muise? during that era. And as I saw myself deeper into that side of history,
I felt that in "FGO" , the place female Musashi must reach as her peak must be "Cutting that which has no form". And around that time, as I was doing Musashi's Trial Quest, I was also making plans for FGO Part 2, so I was studying info on Greece and the concept of Chaos.
And at that moment, I thought, well this is something Musashi has to cut, as Muramasa mentioned, "One you are able to cut that which has no form, you show your true essence". Many different creative material makes Miyamoto Musashi appear in it, but we thought that if we are to put in Musashi, that we have to put her inside the story with a meaning to her in the story. And I thought that Musashi would have meaning if she at the end cuts through the Empty Space/Kyou, and accomplishes all things and disappears beyond the zero. And she was character that was made with that in mind, and we put in a lot of small nods to this throughout the game.
So this isn't something that is related to the Root of All Magic or etc like that.