Kim You Jung & Park Jinyoung’s Sweet On‑Set Chemistry Shines in “100 Days of Deception”

tvN’s upcoming thriller‑romance “100 Days of Deception” just dropped a fresh behind‑the‑scenes video, and it’s exactly the kind of peek‑a‑boo fans love. The clip kicks off with Kim You Jung slipping into a series of pick‑pocketing gags. Between takes she cracks, “I totally covered the cost of our after‑work dinner party,” a line that instantly feels like an inside joke among the crew.

Kim also pops up helping out the set staff, handing props and adjusting lighting, while the director and a few cast members teasingly ask, “Ever thought about becoming an actress?” and “Call me when you finally want to be a star.” It’s the kind of playful ribbing that makes the whole atmosphere feel like a relaxed hang‑out rather than a high‑pressure shoot.

Switching gears, Park Jinyoung shows off his action chops, darting around the set as if dodging bullets – only he jokes about doing the wave to avoid them. His co‑star Jin Sun‑Kyu can’t stop laughing, quipping, “How am I supposed to rest when my son’s working like this?” Their banter carries through several takes, lightening what could otherwise be a tense sequence.

The heart of the video, though, is the chemistry between Kim and Jinyoung. At one point they both forget their lines, burst into giggles, and end up doing a goofy little dance right there on the floor. Those unscripted moments feel genuine, like two friends secretly sharing a joke while the cameras keep rolling.

As the making‑of wraps, Kim reflects on her first day filming, hoping to stay healthy, enjoy the process, and urging viewers to stick around for the “reasons behind the lies” that the drama promises. Park adds that working with Kim feels comfortable and exciting, hinting that their partnership might be one of the show’s strongest draws.

If you’re curious, the video is right below – it’s a quick watch that gives you a taste of the fun behind the tension. And while you’re at it, you can catch Kim You Jung’s recent drama “Dear X” on Viki, or see Park Jinyoung in the mystical series “The Witch.”