The term 'Ginza Purchase' is a type of shopping experience in Japan. It involves buying items from the Ginza district of Tokyo, which is known for its high-end stores and luxury goods. The term 'OBI' is a three-letter Japanese word that refers to a traditional sash or belt worn with a kimono. In the context of Ginza Purchase, it is used to refer to the wrapping paper used to package the purchased items.