Yusaku Maezawa founded Japan's largest online fashion mall, Zozotown, in May 1998.
Zozotown parent Zozo (formerly called Start Today) is listed on the Tokyo Stock Exchange; Maezawa owns 36%.
Maezawa got his start selling CDs and records of his favorite bands by mail from his home.
He collects modern art and plans to build a museum to display it in Chiba, east of Tokyo.
In 2017, he paid $110.5 million for Jean-Michel Basquiat's 1982 painting "Untitled," a new record for the artist.
In 2018, SpaceX CEO Elon Musk announced that by 2023 his company will send Maezawa to the moon as its first private customer.
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