10. Akira Mori
Akira Mori is the last richest person in our list with an estimated net worth of US $ 3.4 billion. He is the chairman of the real estate mogul “Mori Trust” which is currently operated in 88 rental buildings and 30 hotels, including the Shangri-La Hotel in Tokyo. He purchases the buildings and bulldozes them to make modern high raised buildings. Akira and his brother Minoru is the inherited billionaire and their initial fortune is becomes from their father.