I am deadly allergic to shellfish but I love love love Japanese food otherwise. I am visiting late this summer and doing lots of food research, as you can see, it will be a challenge eating in Japan without cross-contamination. Does a tonkatsu restaurant exist at all in which there are no shrimp items on the menu? I fear that they will be frying the tonkatsu in the same oil as everything else, and that would result in my potential death. Not good.