Super Junior's Leeteuk's shocking reason for why he worked so hard is making fans and netizens feel sympathy for the singer.

On November 24, Leeteuk spoke at an event called, "There's No Hope without Despair," where Leeteuk shared what had happened to his family and his financial situation.

Leeteuk recalled of a time back in January of 2014, when his father and grandparents passed away, saying, "While I was in the mandatory military service, I was struggling with depression, and I heard the news of the family death news; it was a very difficult period."

He also revealed the content of a note written by his father, who committed suicide after killing Leeteuk's grandparents. The note contained a line, "Do you think you succeeded alone?" -- a line that seemed to suggest that the father had resentment towards the singer.

Leeteuk's shocking revelation did not end there. His father had left a debt of about 5 Billion KR₩ (~$4.25 million USD). In order to pay off his late father's debt, Leeteuk sold his car, increased his workload and only slept about 4 hours in 3 days to fit all the schedules into each day, even though he could have been freed from the responsibility of paying off the money if he had given up the legal inheritance responsibility. Leeteuk said that he is still continuing to pay towards the debt, without resenting his father, and to do what is ethically right.

After the content of Leeteuk's story became known online, even his fans said, "We didn't know he was struggling this much." One netizen commented, "No wonder he was on so many shows and working so hard..." Another wrote, "I am not even his fan, but I want him to succeed. He doesn't have to pay it back, but he is being responsible."