Ramen

Hello Maite!
Yes, you are right, french culture is very popular in Japan, its surprising.

There is a place in Tokyo known as "Tokyo's French Quarter", its called Kagurazaka, you can see how to get there and watch a video here: https://planetyze.com/en/japan/tokyo/kagurazaka

You can learn more about the restaurants, shops and etc of tokyo's french quarter Kagurazaka in these articles: http://www.japantimes.co.jp/life/2017/02/04/travel/bathing-french-culture-tokyos-kagurazaka-district/#.WS5keROGPFw

http://en.rocketnews24.com/2014/07/08/an-afternoon-in-kagurazaka-tokyos-french-quarter-%E3%80%90hidden-tokyo%E3%80%91/

I hope this helps! :-)