Actor Yoo Ah In is gaining attention as he responds to one of his fans who dissed Park Myung Soo on social media. 

On February 10th, Yoo Ah In posted a photo posing with actress Jung Yoo Mi on his Instagram as they celebrate their win at the 'Blue Dragon Awards 2020.'

Park Myung Soo left a comment saying "Congrats congrats" on the photo which one fan replied, "Mr. Park Myung Soo, don't act like you're close with my oppa (what females call older males)." 

She wrote, "Mr. Park Myung Soo, don't act like you're close with my oppa Ah In. He just appeared on your radio show once. It seems like you like to act close to stars. You don't even do the basic information research about the guests on your show and you don't even listen to their question and just say, 'I got it, I understand.' It was uncomfortable to see your rude actions. Don't act close to my Ah-In Oppa just because he appeared on your radio show once."

Yoo Ah In soon replied to his fan, saying, "I never had a dongsaeng (little sibling) like you.." and left a heart emoticon as a reply to Park Myung Soo's comment. Yoo Ah In expressed his dissatisfaction towards the fans who dissed Park Myung Soo while claiming to be Yoo Ah In's fan.

After seeing Yoo Ah In's response, other netizens commented, "Yoo Ah In deserves an applause," "He definitely educated that hater," and "Yoo Ah In did a good job clapping back."

Meanwhile, Yoo Ah In was able to win the Best Actor award at the '41st Blue Dragon Film Awards.' He previously appeared on KBS Cool FM radio show 'Park Myung Soo's Radio Show' back in October last year.