Thomas D. Williams 
Project Fifty [EPUB ebook] 

After the United States forces Japan to surrender by dropping atomic bombs on Hiroshima and Nagasaki in August of 1945, a mystical Shinto priest designates army veteran Maseo Iwata to head up Project Fifty. The sole purpose of the project is to take revenge against the USA. During the next fifty years, Maseo and his team work hard to prevent detection by not only Allied Occupation Headquarters, but also the newly formed government of Japan and the American Central Intelligence Agency.
Even though the team members individually achieve great economic success, jealously and betrayal threaten to destroy the group from within.