Actress Seo Hyun Jin surprised Yoo Yeon Seok after revealing that she had slept for 11 hours, leaving her The Perfect Lie co-star wondering how she managed to get so much rest.

On November 9, the MBCdrama YouTube channel released a video featuring Seo Hyun Jin and Yoo Yeon Seok playing a game in which they had to identify which of three statements about each other was false.

During the game, Seo Hyun Jin shared three statements about herself.

*"I took herbal medicine today,"* "I have a dog," and "I slept for 11 hours today."

Yoo Yeon Seok immediately became suspicious of the third statement, explaining that sleeping for 11 hours seemed almost impossible to him.

He asked, "Can someone really sleep for 11 hours? That's impossible for me now. I wake up after six hours. Eight hours is my maximum."

Convinced that his co-star was exaggerating, Yoo Yeon Seok selected the 11-hour sleep statement as the lie.

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However, Seo Hyun Jin surprised him by revealing that it was actually true.

"It's true. The lie was that I took herbal medicine today. I forgot to take it," she explained with a laugh.

Seo Hyun Jin then shared how happy she felt after getting such a long and comfortable sleep.

"I slept like a newborn baby today. I was so surprised when I woke up. I thought, 'I'm so happy! I can't believe what time it is!'" she recalled.

Hearing her explanation, Yoo Yeon Seok agreed that getting enough rest was something special.

"It's so precious," he responded, showing that he understood her excitement.

The two actors continued their friendly competition when Yoo Yeon Seok presented his own statements.

He claimed that his blood type was A, that he had eaten sushi that day, and that his pet dog Rita was at home.

Seo Hyun Jin guessed incorrectly, and Yoo Yeon Seok revealed that Rita was actually at the filming location.

Seo Hyun Jin expressed disappointment that she had not seen the dog because she had not visited the waiting room.

Their playful conversation showed a relaxed and friendly side of the two stars as they promoted their MBC drama The Perfect Lie.

The psychological thriller follows two people who give completely different accounts of the same memory, leading to a tense conflict as they search for the truth.

While The Perfect Lie explores serious questions about memory and trust, Seo Hyun Jin and Yoo Yeon Seok's lighthearted exchange offered viewers a glimpse of their chemistry outside the drama.

Their conversation also highlighted Seo Hyun Jin's unexpected 11-hour sleep experience, which even surprised her co-star.