New stills of Ruler: Master of the Mask show Yoo Seung Ho shielding Kim So Hyun from danger.
In the scene, they are surrounded by armed men, and Yoo Seung Ho hides Kim So Hyun behind him. In one photo, he appears to be almost hugging her.
The scene was shot on March 14 in Mungyeong of North Gyeongsang Province. It was important that the flow of their encounter with the armed men be natural, so the two actors constantly communicated with director Noh Do Cheol and practiced the movements and gestures they would be making when filming the scene.