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There are many foods in Japan which are better than what you can get in other countries, and there are some foods which are prepared uniquely to suit Japanese tastes which are different, but still good (not better, not worse, just different). Some things in Japan are pretty much complete and utter failures, and that is sandwiches. The specimen pictured above is a soba sandwich. Soba is a Japanese noodle made from buckwheat. It is the equivalent of a spaghetti sandwich. There's nothing better than carbs heaped on carbs with, of course, some mustard (karashi) mayonnaise to boot!
While this is one of the nastier looking sandwiches (seriously, don't you think it looks like worms?), there are plenty of nice looking sandwiches with crusts removed that are full of paper thin ham slices, extremely mayo heavy potato, egg or tuna salad (more of a mayo paste with flavoring), and strawberries and cream.