Lee Jae-myung maintained the broad grin of a hopeful politician as he took the podium in Seoul on Feb. 16 for a Gwanhun Club debate, a formal gathering of suited men discussing policy. He casually took his seat, the focal point of attention as the only presidential candidate on a panel of journalists, arms on the table in front of him, exuding the confidence of a prize fighter at a pre-bout weigh-in.