The former head of Nissan Motor, Carlos Ghosn, was arrested on November 19 in connection with alleged financial misconduct. Ghosn became COO in 1999, at a time when the company was facing financial crisis. Nicknamed the "Cost Cutter," the charismatic leader soon restored the company's profitability. He went on to serve as chairman of the Renault-Nissan-Mitsubishi alliance. But now, Nissan says Ghosn underreported his income and misused company funds over several years. NHK's exclusive coverage helps shed light on the matter.