Originally Posted by
braslvr
Same here, and when in Japan, my hosts were aghast that I requested wasabi, since it was "already on the fish", and they were really shocked when I mixed the wasabi and soy. My impression was they had never in their lives seen that.
I can assure you that mixing wasabi and soy is normal both in Japan and Korea that are the two big raw fish eating nations in Asia.
But not in
high-end sushiya. There it might get you kicked out by the offended itamae.