
Let me get one thing straight.
Sushi is not the only delicious Japanese food.
Of course, if you're a big fan of sushi, you can have "genuine" one in Japan.
But there are a lot of kinds of delicious and also interesting food and drink in Japan. It wouldn't be difficult to find something you've never seen and to try something you've never tasted.
However, it's often difficult to find what to eat when you travel Japan because most restaurants don't have English menus and people can't explain what kinds of food they are in English.
So check out these pages describing Japanese food/drink and find as many kinds as you want to try, and try them while you're in Japan!