Some more musings, since I have the time.
- Aya's camera could be good for a temporary blinding if she gets too close. Given she's a rock right now, physical strikes to ssensitive areas may be the best action plan, such as poking her in the eyes.
- This girl is powerful, well-equipped and determined, but she's also simple and emotional. This will ultimately be a battle of wits more than anything else, because we're not going to win a slugfest. An idea I had was to taunt her while using book puns; hopefully getting her madder will cause careless mistakes and overly direct attacks, and a constant annoying reminder that her book is missing should do that trick nicely. I know we've been reluctant to do certain things throughout the game, but we're all in on this fight. We've seen what happened to Nitori and Kogasa - that cannot happen to us, both for our sakes and Gensokyo's.