“Hmm. I’m already satisfied with this – it’s a bit difficult for this to function as the headquarters of a magus.”

Despite Irisviel’s weak appearance, she was in fact a first-rate magus.

“Although it wouldn’t be problematic to set up a bounded field around here, when it comes to setting up a workshop… but this is the tradition of this country so there’s nothing I can do. The prana can easily drift away in a house with such an open structure, especially for the Einzbern craft… Aaa, this is frustrating. If possible, I want a room sealed off with stone and earth…”

- Fate/Zero: Act 9, Part 4