When not in-character as the inheritors of elite businesses and conglomerates, the cast of "The Heirs" show that they're just a group of carefree and goofy youngsters.

On November 9, Park Shin Hye acts as the group's director and uploaded two videos featuring her co-cast members. On her Twitter, she said, ""This is how I use my YouTube account. This video was posted with the consent of Myung Soo."

The video features Park Hyungsik, who plays the character Myung Soo, showing off an adorable dance full of aegyo.

For the second video, she posted, "Scenes from the survival camp in The Heirs created with Vintagio + Road Movie. Haha. Director-Park Shin Hye: Featured-Myung Soo, Young Do, Bona, Rachel, Yesol, Eun Sang, Chan Young."

In the video, the young cast members are seen playing with guns and goofing around in military outfits, proving their closeness on and off screen, despite the increasing tension in the current arc of the story. The military concept is for their most recent filming of the students' reported leadership camp and paint ball fight.

Catch the next episode of SBS's "The Heirs" on Wednesday.