Burger King serves up red burger in Japan

The aka, or red, samurai burger features crimson-colored buns and red-tinted cheese, along with the so-called "angry sauce." Customers can choose either a beef Whopper patty, or a royal hot chicken patty.

The red samurai burger will be offered for a limited time of July 3 through August 20 and will cost the equivalent of $5.60 in U.S. currency.