Who was the pretty boy in KBS' drama special 'Happy! Rose Day'?

If you watched the KBS 2TV drama special 'Happy! Rose Day', you might have noticed a pretty boy rookie actor. 
With curiosity rising about his identity, Pledis has stepped up to reveal that he is none other than Seventeen's Doyoon! 
He's acted before in NU'EST and Hello Venus' MVs before, and he played the role of a cafe worker Jinho that has a crush on his co-worker in the recent airing of 'Happy! Rose Day'.
Currently, Doyoon is working hard to prepare for the 'LIKE SEVENTEEN' performance that will be held end of the season 3 of 'Seventeen TV' airing today.