Actor Lee Si-eon is going to become a father. On the 26th, Lee Si-eon's agency, Story J Company, officially announced Seo Ji-seung's pregnancy. The agency stated, "Seo Ji-seung is indeed pregnant. The baby is expected next year." They also added, "It is difficult to disclose specific details such as the exact due date and the baby's gender."

On the 25th, Lee Si-eon hinted at the pregnancy by posting a photo of a baby-shaped balloon along with the message "Merry Christmas" on his social media account. Lee Si-eon and Seo Ji-seung have been publicly dating since 2018 and got married in December 2021. After their marriage, Lee Si-eon expressed his desire for children several times on broadcasts. In the MBC show "Born to Travel the World 4" aired last June, he said, "I have made a new family plan starting this year," and added, "I thought if I sincerely wish for it, my hope might come true."

Lee Si-eon debuted in 2001 with the film "Night of the Silla" and has been actively working in various projects since then. He gained great popularity by appearing on the MBC variety show "I Live Alone." Lee Si-eon is scheduled to meet viewers worldwide through the Netflix series "Hounds 2" in 2026.

The news of Seo Ji-seung's pregnancy came four years after their marriage. On Christmas Day, the 25th, Lee Si-eon expressed his joy by sharing party photos on his Instagram that hinted at "pregnancy" and "childbirth." The photos showed a wall filled with baby balloons and the words "OH BABY." Lee Si-eon's Christmas party photos are interpreted as a "celebration party" ahead of the birth of their child.

In December 2024, Lee Si-eon appeared on Han Hye-jin's YouTube channel and openly talked about plans for a second child. When Kian94 asked, "Hyung, I heard you're having a baby next year," Han Hye-jin responded, "Are you going to start parenting content now?" Lee Si-eon replied, "Yes, now it's parenting content," showing his intention to create content related to raising children. Han Hye-jin jokingly said, "You're having a child for the content."

Lee Si-eon's desire for a second child was also revealed on the MBC variety show "Born to Travel the World 4" aired last June. He said, "I have made a new family plan starting this year, as everyone thinks. I hope my earnest wish will come true." Following his wishes and plans, Lee Si-eon succeeded in getting Seo Ji-seung pregnant in 2025 and is now preparing for the birth of their second child.

Lee Si-eon will continue his career by appearing in the upcoming Netflix series "Hounds 2," scheduled for release next year. He also communicates with fans through his YouTube channel "Si-eon's School." The news of Lee Si-eon and Seo Ji-seung's second child has been warmly congratulated by many, and there is great anticipation for their new beginning.