sentences:  After traveling extensively and graduating from Keio University with degrees in politics and law, he became a naturalized Japanese citizen and legally changed his name.Obara invested heavily in real estate speculation, gaining assets estimated as much as $38 million.After losing his fortune and his firm in the 1990s recession, he was pursued by creditors, and reportedly used his business as a money laundering front for the yakuza syndicate Sumiyoshi-kai.