On a midsummer Thursday night, the entertainment district of Hongdae in Seoul is slowly coming alive. Short for Hongik University, Hongdae neighbours several university campuses and typically attracts thousands of young people to its flashy streets. Just a few blocks away from the main clubbing area, the atmosphere is quieter with hardly any patrons at a row of pubs and restaurants. “Hongdae is not what it used to be like,” said Chris Kim, a 27-year-old who works in the fashion industry. “My...