Veteran duo Fly to the Sky graced the stage of 'Yoo Hee Yeol's Sketchbook' with their presence on September 18, where Brian could be seen doing imaginary sweat drops as Hwanhee's lion side came out.

First up, Brian stated, "I suddenly did really well in the variety sphere.  I think they thought I couldn't speak before that because I was a Korean from overseas."

Hwanhee was asked, "Was there a time when, as a member, you thought that was not right?" and replied, "When Brian impersonated me.  I wanted to beat him up.  This is because whenever we sang a ballad, people would laugh whenever they looked at me."

Yoo Hee Yeol then said, "Hwanhee, how do you feel right now?" and he hilariously responded, "Right now we're on TV, so I am holding myself back.  It's a relief that the cars that take us home after our schedule are different."  Brian is surely relieved, as well.

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Despite this cute bickering, the two harmonized and worked together beautifully in their performances!