Cha Eun Woo's special appearance on Song Hye Kyo's first vlog has gone viral.

Song Hye Kyo's first vlog, titled “Not My Vlog, but Song Hye Kyo’s Vlog...” was recently uploaded to Kang Min Kyung's YouTube channel 'Kyang Ming Kyung'. In the video, Song Hye Kyo brought fans around showing them a glimpse of her life.

The vlog post garnered much attention online but particularly Song Hye Kyo's interaction with Cha Eun Woo went viral. In the video, Song Hye Kyo attended an award ceremony overseas and was seen enjoying the after-party.

While enjoying the party, Song Hye Kyo seemed to be deep in thought with the caption explaining, "(Kang) Min Kyung told me to film something (interesting)..."

After some thought, she turned the camera toward Cha Eun Woo and the actor greeted the viewers and fans. 

Fans found this short interaction adorable and hilarious. One fan shared a short video sharing, "Watching Song Hye Kyo's vlog, and it's so funny how Min Kyung told her to film something—so she went and filmed Cha Eun Woo."

Other fans commented:

"The right choice, the right result"

"LOL Both Song Hye Kyo and Cha Eun Woo are dazzling, but the whole situation is just way too cute!"

"Determined to film him.This is hilarious!"

"When Cha Eun Woo smiles, you just can’t help but smile along."

"Also, Song Hye Kyo looks absolutely stunning here."

"Her sense of humor is spot on!"

"As soon as Cha Eun Woo appeared, I couldn’t help but smile."

"Yeah, it really seems like filming Cha Eun Woo was the only right move."

"This is too cute! And honestly, it totally makes sense."

"Song Hye Kyo is unexpectedly funny."

"Her necklace is super fancy, but I only noticed it the second time because I was just focused on her face the first time."

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