Watch: Park Seo Joon Gets Easily Distracted While Filming "Itaewon Class"

JTBC’s “Itaewon Class” has released a new making-of video!

The video starts off with Park Seo Joon, Kim Da Mi, and Kwon Nara rehearsing the scene where Kim Da Mi blocks Kwon Nara from kissing Park Seo Joon. The three actors discuss their positions and lines with the director and practice the scene several times to make it perfect. Park Seo Joon says his line, which is, “Which guy is annoying you?,” and Kwon Nara seriously quips, “You.” Park Seo Joon stares at her blankly before demanding, “Who? You’re lying!,” causing Kwon Nara to burst into laughter.

During break time, Park Seo Joon becomes interested in cameras and carries one on his shoulder. He starts to film Kwon Nara and comments, “This is pretty heavy.” He sways a little, and the camera director is quick to take the camera back.

Park Seo Joon prepares for his next scene with Ahn Bo Hyun. Despite the tense scene that is about to unfold soon, the two actors are all smiles, and they even wear silly sunglasses to brighten the mood. Once filming starts, they stare each other down with steely eyes, but when the cameras turn off, they grin widely at each other.

Later on, the director suggests Ahn Bo Hyun touch Park Seo Joon during the face-off scene at the elevator. However, both are quick to disagree, adding that Park Seo Joon may end up punching Ahn Bo Hyun. Ahn Bo Hyun whines that he doesn’t want to be hit anymore, and Park Seo Joon jokes he’s going to leave his fists in his pockets.

Watch the full making-of video below!