The Liberdade area in Sao Paulo is also known as JapanTown. It has the largest Japanese population outside of Japan. Our hostel guy said it was a great place to go and take pictures because everything was Japanese (I was secretly hoping to find a bowl of ramen).
When we arrived it was late-afternoon and lots of shops were closing. We dodged rain showers under the awnings of cafes until we found somewhere that served hot bean soup (Brazilian not Japanese).