"So comfortable with each other"— Fans gush over Chae Soo-bin and Yoo Yeon-seok's off-screen chemistry in behind-the-scenes of 'When the Phone Rings'

On December 14, 2024, MBC released the behind-the-scenes footage from the latest episodes of K-drama, When the Phone Rings, on its YouTube channel. The clips from the video sparked widespread excitement among fans. They showcased the natural camaraderie between lead actors Chae Soo-bin and Yoo Yeon-seok, leaving viewers captivated by their off-screen chemistry.

One particular scene that drew attention featured the two filming a moment where their characters accidentally fell on each other. During breaks, Hong Hee-joo (played by Chae Soo-bin) stayed in her position on top of Baek Sa-eon (played by Yoo Yeon-seok) while rehearsing her lines.

Fans took to social media to react to this candid moment, with many praising how their off-screen rapport added depth to their on-screen performances. An X user, @sprinkleflakes wrote:

"read the script while they are still on this position and people expect me to be OKAY???????? they look so comfortable with each other."

Others also joined in to comment on how their chemistry made the slow-burning romance between their characters even more believable.

"How can they not fall in love??," an X user wrote.

"The amount of times i've watched this is unhealthy," a fan remarked."

"Are we disturbing something??," another user commented on X.

"I feel like I’m invading their privacy…," a fan wrote.

Fans also noticed how the duo was seen singing together between their takes.

"The fact that YYS is singing the high note part and CSB is taking the low notes is still so Sa Eon - Hee Ju coded," a fan commented.

"It's a breakup song about someone who can't let go nor hate the one they love bcs the amount of love they hold for them," an X user wrote.

"That's it! I'm out of the asylum and back into the mad shipping business!," another person remarked.

"Maybe that could be one of the way to bring out their chemistry? But that's not important. SaJu couple need to sing their own OST," a user wrote on X.

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More about When the Phone Rings and its plot

When the Phone Rings, which premiered on November 22, 2024, has quickly become a hit among viewers, with just six episodes aired so far. The drama's plot tells the story of Baek Sa-eon and Hong Hee-joo, a couple in an arranged marriage who have lived as strangers for three years.

Their relationship in When the Phone Rings takes a turn when Hee-joo is kidnapped by an unknown assailant, leading to unexpected changes in their lives.

The growing popularity of When the Phone Rings has been bolstered by the strong performances of its lead cast and the intriguing storyline. Fans eagerly await more episodes to see how the relationship between Baek Sa-eon and Hong Hee-joo evolves both on and off the screen.

Furthermore, the sixth episode of When the Phone Rings hit its highest viewership of 9.2% during a memorable scene where lead characters Saeon and Heeju took part in a two-person jump rope competition at a company retreat.

As per Nielsen Korea, it recorded strong nationwide ratings of 6.9% and 6.4% in metropolitan areas, alongside a notable 2.4% rating in the 2049 demographic, marking new milestones for the series.

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When the Phone Rings, co-directed by Park Sang-woo and Wi Deuk-gyu and written by Kim Ji-woon, airs every Friday and Saturday on MBC TV at 9:50 PM KST. It is also available for streaming on Netflix in select regions.