Han Ga-in and Kim Dong-jun reunite as siblings in 'sinbyeong 4'

Actress Han Ga-in and Kim Dong-jun have teamed up as siblings in the drama 'sinbyeong 4'. A video released on Han Ga-in's YouTube channel, 'Free Woman Han Ga-in', captures behind-the-scenes moments from the set and candid conversations between the two actors.

"Looking like siblings" — Chemistry fueled by striking resemblances

In the video, Han Ga-in and Kim Dong-jun discuss their roles as siblings in the upcoming drama. Through both the video description and their dialogue, Han Ga-in noted their physical similarities, stating, "No matter how much you look, we really do look very much alike." The video even includes a moment where they confirm that Kim's maternal grandfather bears a resemblance to both of them. Regarding her bond with Kim, Han Ga-in revealed the friendship they built during filming, saying, "We are here as siblings... and we have become truly close friends." Han Ga-in also noted that she will appear in episodes 6–7, while this marks Kim's fourth appearance in the series, making him one of the most frequent cast members.

Sweltering sets and a military-like atmosphere

As the drama is set within the military, the cast shared specific details about the filming environment. The cast expressed the difficulties of filming during the summer, noting that insufficient air conditioning on set led to struggles with intense heat and humidity. Han Ga-in remarked, "The air conditioning on set doesn't work well, so it really feels like the military," describing hardships such as soaked clothing and mosquito bites. The production's realism is further mirrored by the cast's lifestyle; they mentioned staying at a nearby resort and following a routine similar to military life, such as going to the sauna together in the morning.

Key highlights for 'sinbyeong 4' viewers

Han Ga-in mentioned that the drama is designed to resonate deeply with male viewers who have completed military service. The video touches upon the sibling dynamic they will portray and the touching moments experienced during military life. Han Ga-in added that the show contains relatable elements—such as how even a single Choco Pie can be a source of comfort in the military—that will appeal to any Korean man, driving high viewership among male audiences.