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During the interview portion, producer Choi Gyu Sik opened up about lead male actor Ha Suk Jin, saying, "There were a lot of scenes where Ha Suk Jin had to drink alone. There were times when he actually drank alcohol. He'd drink, and puke, and drink, throughout filming. I was sorry toward him." 

But Ha Suk Jin himself didn't seem to mind, stating his reasons for choosing to do the drama with, "There's no role I could've done better." 

'Drinking Alone' premieres September 5!