Hi @FaridTDF
Thank you for reading! I recently stood at the true birthplace of Japanese sushi. It is Wakasa Bay, Fukui Prefecture. About 1,500 years ago, in order to deliver raw mackerel to the emperor in Kyoto, it was processed using fermentation technology and peddlers walked to deliver it. This is the origin of Japanese sushi.
https://goo.gl/maps/78Cv1NJ1CDmif6AU7
However, it is said that the true birthplace of sushi is Southeast Asia, not Japan.