You know what - I think you should visit the neighbourhood of Kanda! Here are lots of bookstores, both second hand and new ones. This is the place to buy a supply of great Japanese novels translated into English, that you could have a hard time finding in your own country.
I recommend Kawabata (my favourite being 'The old capital'), Ariyoshi (e.g 'The river ki') and of course 'The tale of Genji' by Lady Murasaki, which is the worlds oldest novel!! ( Picture from the Handscroll of the tale of Genji from the twelfth century, which is now at the Tokugawa art museum.)
The Russian Orthodox Cathedral on Hongoh-dohri, near Kanda.