S hin Dong-joo is a South Korean-Japanese businessman and the eldest son of the late Shin Kyuk-ho, the founder of the Lotte Group, a massive conglomerate with operations in South Korea and Japan. For many years, he was considered the heir apparent to his father's empire and served as the vice chairman of Lotte Holdings in Japan, overseeing the group's original confectionary and real estate businesses.

However, his career was upended by a bitter and highly public succession battle with his younger brother, Shin Dong-bin. In 2015, his father removed him from his leadership positions, and the board of Lotte Holdings sided with his younger brother, who ultimately took control of the entire Lotte Group. Since being ousted, Shin Dong-joo has launched numerous unsuccessful legal challenges and shareholder campaigns to try and regain control of the company. His wealth is derived from his inherited stake in the Lotte Group's various entities, but he no longer holds any executive power within the conglomerate his father built.