[Touko]

Originally Posted by MidoriHiME

OK, so, please keep in mind it's been MONTHS since I played the visual novel and maybe I just missed/forgot something huge, but this has been bugging me forever:

Spoiler for Shirou's body:

WHY is his body pierced by swords from the inside out when he uses UBW?? I don't remember this phenomenon happening every time he projects and it's not an issue for Archer, so why does it happen sometimes and other times not? And why does it even happen at all? Is his body actually MADE of swords, or do the swords get made when he projects? I think I remember the game saying his body was actually MADE of swords, but why? Did Kiritsugu give him a body made of swords? Why/how the fuck would you do that? And why would projecting make his body reveal its true form of being made of blades? Please enlighten me.

See below. It is the same principle, except it was amplified in Heaven's Feel due to the immense power of Artificial Phantasm.

Spoiler:

Q: During the Shirou VS. Rider scene in Saber’s route, why didn’t her daggers kill him? Was it because of the holy sheath embedded within his body? Or was it because his body had begun its swordification?
A: At that time, Shirou’s self-healing had already begun, but the nature of his regeneration was really quite indirect, “changing his muscles into blades in order to knit his wounds with swords.” That is actually what happened, regardless of what you saw during the scene in Saber’s route where Gilgamesh dealt him a mortal wound and Shirou appeared to have “masses of blades shaped like muscle fibers” in his body. So, Shirou’s innards are extremely durable. During the fight with Rider, she was able to injure Shirou with her stakes but it would have been more difficult and troublesome to fatally wound him, so she decided to kick him out the window instead.