The National Diet Building is normally the place where the House of Representatives and House of Councilors meet in Japan. The building itself is white in color and from the front has six long white pillars that are connected to a taller roof and box level further past the entrance. It stretches to the left and right taking up the entire block with many offices and conference like rooms inside that are similar to those that all governmental offices use.
However the National Diet Building is also home to Eden, the secret organization that runs the Code:Breakers. The current members of Eden are unknown.