地成
He made his comeback in the medical drama "New Heart" (2007–08), playing a cardiothoracic surgery resident. During a scene where his character cries after failing to save the life of a former comfort woman, Ji Sung said he thought of his maternal grandmother who'd recently died, remembering that she'd told him her only pleasure was watching him in reruns of "All In". Contrary to his cheeky, playful character, Ji Sung said that he's taciturn and shy in real life, but that the drama made him find a different side of himself.