Kareen SENSEI (.
Google
A restaurant well located near Opera and Pyramides. The entrance doesn't show how roomy the restaurant really is, and they also have an upper floor.
All the staff members were nice and ready to help, and could speak Japanese and French.
The place is immaculate and you can enjoy refined simplicity here. As expected of a restaurant run by Japanese people.
Don't hesitate to book by phone (number on their official webpage).
The freshness of the fish and the rice will satisfy you if you've ever lived in Japan. Be prepared to pay quite a bit for the quality though.
On that note:
We were surprised to discover a set of prices far above the ones indicated on this Google page, in the menu tab. Some of the most affordable options such as the sushi or sashimi assortments were just not present on the menu at all (in fact, the whole Sushi and Chirashi tab was not there, the whole menu was only 2 pages), so don't come thinking you'll be able to control your budget based on what you saw online.
This is a quality restaurant, come only if you're ready to splurge.
We're uploading all 2 pages of the menu that was given to us so you can see for yourself, and compare with the screenshots of the information provided on Google as of today.