[fara7]

i know few things that you houdlnt do while eating in japan or infront of a japanese person:

-Don't poke food with the tip of your chopstick.
-Dont lick your chopstick tip.
-you should not point to other people with a chopstick.
-you should not eat directly from the main dish but take some of the food place them in your dish or bowl and then eat.
-dont make noises whle eating with a chopstick , like hitting them together and such.

That's all that came to my mind.