Actor Lee Si-eon has melted hearts online after sharing an emotional and unexpectedly funny moment from the birth of his first child with wife Seo Ji-seung.

According to a video uploaded on Lee Si-eon’s YouTube channel Si-eon’s School, the actor documented the day he and Seo Ji-seung welcomed their son, affectionately nicknamed “Taegun.” The touching footage gave fans a rare glimpse into one of the most important moments of the couple’s lives.

The video begins with the couple arriving at the hospital before the delivery. Lee Si-eon explained that their baby had a relatively large head, leading doctors to recommend a cesarean section. Trying to ease the tension, the actor joked that the baby’s appearance already resembled his own.

However, once Seo Ji-seung entered the operating room, Lee Si-eon’s nervousness became impossible to hide.

While waiting outside, the actor paced back and forth and struggled to sit still. Speaking candidly to the camera, he admitted that the wait felt much longer than it actually was.

“It hasn’t been that long, but I keep wondering why it’s taking so long,” he said, revealing the anxiety and anticipation many first-time parents experience.

The emotional peak came when hospital staff called for “Seo Ji-seung’s guardian” and informed him that he could finally meet his newborn son.

Visibly overwhelmed, Lee Si-eon rushed to see the baby and immediately began filming the moment. Holding back emotion, he repeatedly expressed disbelief that he had become a father.

“It’s so surreal. I can’t believe it,” he said while capturing his son’s first moments on camera.

But amid the excitement, something unexpected happened.

Completely focused on meeting Taegun, Lee Si-eon became so overwhelmed that he forgot to ask about his wife’s condition after the surgery.

The realization came only later, when he suddenly remembered that Seo Ji-seung had just undergone a major medical procedure.

Fortunately, both mother and baby were healthy and recovering well.

After the surgery, Lee Si-eon finally reunited with his wife and thanked her for everything she had endured during childbirth. In one of the video’s most touching scenes, he approached Seo Ji-seung and warmly told her:

“You did a great job.”

The simple but heartfelt moment resonated strongly with viewers, many of whom described it as a realistic portrayal of a nervous new father. Rather than criticizing him for forgetting to ask about his wife immediately, many fans found the moment endearing, noting that his excitement and shock had clearly overwhelmed him.

Lee Si-eon and Seo Ji-seung first publicly confirmed their relationship in 2018. The couple married in December 2021 and have since become one of South Korea’s most beloved celebrity couples.

Now, with the arrival of baby Taegun, the pair have entered a new chapter as parents.

The video has received widespread praise from fans, who applauded the couple for sharing such a personal milestone. Many viewers commented that the footage captured not only the joy of welcoming a child but also the nervousness, confusion, and overwhelming emotions that often accompany becoming a parent for the first time.

For Lee Si-eon, the day may have included a brief moment of forgetfulness, but it also marked one of the happiest moments of his life—a moment he is unlikely to ever forget.