100% chocolate cafe is run by old Japanese chocolate brand, Meiji. The environment was designed by Masamichi Katayama of Wonderwall, while all the graphics were by Groovisions.

The entire establishment is rendered as a chocolate kitchen, with a table placed within to accommodate invited guests. Covering one of the walls are 56 different types of chocolate blocks, tastefully placed in glass showcases. Air conditioning was installed in the wall, and 56 kinds of chocolate from 17 countries, including 22 types of cacao beans, neatly lined up like a library in it.

http://travelwithfrankgehry.blogspot.com/2009/02/only-chocolate.html