Actor Chae Jong-hyeop is so popular in Japan that he is known as "Hopsama".

On the 23rd episode of 'Uptown Star K', actress Kim So Hyun and Chae Jong Hyeop, who are working together in the tvN drama 'Serendipity's Embrace', appeared.

Creator Jonathan introduced Chae Jong-hyeop by saying, "You used to be a model before your debut." "I didn't learn modelling in Korea," Chae Jong-hyeop replied, "I lived in South Africa." Jonathan, who is from the Congo, added, "I'm from Africa. Jonathan, from the Congo, exclaimed, "You learnt it in Africa?" and suggested that they try model walking together. They demonstrated a walk that involves keeping the upper body as still as possible and extending the knees forward at a 45-degree angle, ending with a forehead kiss.

After doing the model walk, Chae Jong-hyeop said, "If I get nervous... I'm sorry. Wait a minute," and left the set. Kim So Hyun, who was watching, explained, "He's really nervous and takes his time before he starts, but I think he was a little bit unprepared today."

Jonathan also recited Chae Jong Kyo's profile, saying, "K-HOPSAMA syndrome has swept the Japanese archipelago, and 30,000 people came to a recent fan meeting." "Because of Hopsama, Japanese women think that all Korean men are like Tae-o (Chae Jong-hyeop's character), so please take responsibility," he added, sharing an adorable photo of the actor. Chae Jong-hyeop explained the photo, saying, "It was taken while I was eating japchae, and there's a lot of japchae inside."

Jonathan then shared a photo of Chae Jong-hyeop's back, asking her, "Is your face a fairy goddess but your body a tree?" Jonathan described himself as "angry" when he saw the photo. When Chae Jong-hyeop replied, "Isn't your face also a lumberjack?" and deflected by saying, "It's a pre-debut photo," Jonathan complimented, "You're still angry." The shoulder measurements were 67cm for Chae and 55cm for Jonathan. The average male shoulder width in South Korea is 43cm, and when Chae measured his shoulders three years ago, he reportedly measured 52cm.

Although Jonathan seemed to have misjudged Chae Jong-hyeop's shoulders, Chae Jong-hyeop was satisfied and refused to be measured again.

Meanwhile, the tvN drama "Serendipity's Embrace," starring Chae Jong-gyop and Kim So-hyun, began airing on the 22nd.