The Shimokita-based B&B (that's book and beer; not bed & breakfast) bookshop is branching out to Ginza for five months, with temporary store Edit Tokyo taking over the sixth floor of Ginza's Sony Building until late March 2017. You'll find a corner with selected books on the theme of Tokyo, plus items you simply need for daily life in Tokyo on display and for sale. As there are exactly 100 working days between the opening and the end of March, they're also putting on a '100 evening talks by 100 editors' event series, where book, magazine and online media editors will be invited to speak. The events are generally held in the evenings between 7pm and 9pm.
UPDATE: Edit Tokyo closed at the end of March 2017.