During the postwar reconstruction period under the control of GHQ, with the end of the occupation administration, the business model of building management (maintenance) by contract was started for the first time in Japan. Eventually, it spontaneously developed into a new industry called building maintenance. At the center of the building maintenance industry, which now employs over 1.17 million people and has sales of 4 trillion yen, is a man named Shotaro Asaji, who has been driving this industry. This book is a biography of Shotaro Asaji, who demonstrated his business acumen from a young age, served as a bridge between the occupying forces and the Japanese side as the Japanese chief advisor to the Housing and Buildings Bureau at GHQ, and eventually led the creation and development of the building maintenance industry in Japan. Asaji eventually became the honorary life chairman of the World Building Services Federation, which was established by fellow professionals from various countries. Shotaro Asaji, born on March 16, 1905 and from Kanazawa City, passed away on August 8, 1983 at the age of 78. This book is an English translation of the original Japanese book (published by Chigensha INC, first edition December 28, 2022: ISBN9784434314322), condensed to almost half its original size.The original Japanese text is included at the end of the book.