Shhhhh animus! That would make too much sense. Storing 108,000 books in the brain of a cute loli is far more useful as a story element then having them all stored on a magic hard drive.

I really felt for Touma this ep, he really had no chance of winning that fight except for taking a shot and appealing to Kaori's humanity. I was expecting someone to come save him at the last minute though, I"m not sure I like the way it actually turned out as much but at least it wasn't exactly what I was expecting.