Rogue President

Gangster boss and financier Jiang Hu Piao was not expecting to become a president of a college when he went to collect a delinquent debt. The debtor, who happened to be his former elementary school teacher and current college president, had no money to pay, so he offered Jiang the school as repayment. Just when Jiang wanted to refuse, the president died of a heart attack. Jiang had no choice but to take over the money-losing school and find ways to turn it into a money-making business.
(Source: DramaWiki)