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On October 1, the movie held a cinema concert on Woonjung Green Campus of Sungshin Women's University in Seoul, where Yoo Ah In and his costars gave hugs to their fans. Not only that, but they also read some stories sent in by their fans and gave scholarships to lucky members of the crowd of 700.

'Tough as Iron' is about a Busan man named Kang Cheol who loves his mother dearly and would do anything to protect her from the tough and troublesome world. 

Seeing photos from the event, one netizen wrote, "Yoo Ah In, a man like you... truly deadly," probably because she was swooning or having a fatal nose bleed. Other netizens showed envy towards the fans who got embraced by Yoo Ah In, while others commented that having to hug a bunch of strangers is one of the negative sides of being a celebrity.  

However, Yoo Ah In doesn't seem to mind as he gave hearty hugs to his fans.