Under cloudy skies Wednesday, Rain fired off a crisp salute and thanked a large crowd of mostly media and women who'd gathered to commemorate his discharge after 21 months of mandatory service.
The fans held signs reading in Korean and English: "We waited for you" and "Rain's coming." One Japanese fan said she'd been waiting for more than a day to see the "entertainment soldier."
Rain has made seven albums and acted in several South Korean and Hollywood films. Time magazine named him one of the 100 most influential people in the world in 2011.
His real name is Jung Ji-hoon.