On August 10, tvN's upcoming mystery romance drama '100 Days My Prince' unveiled some photos taken of D.O. while he was busy filming the drama.
In the pictures, D.O. takes a stroll around a beautiful mountain trail, looking slightly concerned about something.
![D.O.](http://img.sbs.co.kr/newimg/news/20180810/201215146_1280.jpg)
D.O. pulls off the style from the Joseon dynasty extremely well that these pictures are literally making fans stop breathing for seconds.
![D.O.](http://img.sbs.co.kr/newimg/news/20180810/201215147_1280.jpg)
D.O. has been cast as the perfect crown prince 'Lee Yul', who loses his memory and transforms into 'Won Deuk' after a fatal injury.
Unlike the perfectionist 'Lee Yul', 'Won Deuk' is considered useless who is not capable of doing anything on his own.
![D.O.](http://img.sbs.co.kr/newimg/news/20180810/201215148_1280.jpg)
(Lee Narin, Credit= tvN 100 Days My Prince)
(SBS Star)