Wow, what rare shrines in Tokyo! I saw these types of shrines like twins, but it was the first time for me. Although they were quietly standing between buildings, I heard that they were well known by people living around here. Actually they were separated during Edo period, however, they were combined as one shrine, Sanuki Shohaku Inari Jinja, around 80 years ago. It will take you about 10 minutes by foot from JR Hamamatsucho station, so I recommend you that you should drop by here when you go to Tokyo Tower.