I Don't Understand

Shiki's catchphrase. Repeated every time he's thrust into a new situation, and really implies wanting the reader themselves to understand the situation
Probably said over 100 times throughout Tsukihime, if you include Shiki's monologues.
It was the catchphrase of the first-generation Shiki from Kara no Kyoukai, and Tsukihime's Shiki inherited it from her. However, it seems that even the scenario director was surprised by how well it suited him.
Incidentally, even though we finally finished working on Tsukihime and should be taking time off to relax, for some reason we're making this book instead.
I don't understand…

Tsukihime Data Collection: Tsukihime Dictionary