Now that you're in Japan and have probably already bought this book, I can uselessly confirm that it's the JR anime guide book. I have it; you could have looked at it when you were here. :( It's the book Sara and I got autographed by Kazuhiko (for Miyagi).

Thanks (belatedly) for the summary, by the way. I tried, unsuccessfully, to read and comment on this entry like 5 times during the LJ weirdness but always failed, so I only just got back to it now. Sad that I missed all the junjo talk in the meantime though!