Kim Woo-seok, former member of boy group UP10TION and X1, begins his military service today. On the 4th, he will enter the Army Training Center, where he will undergo five weeks of basic training.

Woo-seok has been accepted into the military band, and after completing his training, he will be assigned to his designated unit to perform his military duties as part of the band. Through his agency, Blithewai Studio, he expressed his determination: "I will complete my service healthily and return as a more mature person."

Even after his enlistment, fans will still be able to see him on screen. Woo-seok stars as the lead character, Kang Woo-bin, in the upcoming web drama *0th Period Is Inssa Time*, set to release on the 10th. Interestingly, he developed a real-life relationship with co-star Kang Na-eon, which was confirmed by his agency on the 25th of last month, asking fans to support the couple.

Born in 1996, Kim Woo-seok is five years older than Kang Na-eon, who was born in 2001. With Woo-seok’s enlistment, Kang Na-eon now joins the list of “military girlfriends,” affectionately known as "Rubber Shoes" in Korean culture. In an *Allure Korea* interview video released on October 31, the couple shared impressions of each other.

Kang Na-eon shared, “At first, Woo-seok seemed cold, but as we got closer on set, I saw his warm and thoughtful side.” Woo-seok added, “I thought Na-eon would be the type to initiate conversations, but it turns out I was the one talking more on set.” With Woo-seok’s enlistment coming shortly after the couple’s relationship went public, fans have shown their support for the couple’s continued happiness. His discharge is anticipated on May 3, 2026.

*0th Period Is Inssa Time* tells the story of Kim Ji-eun (played by Kang Na-eon), an outsider who becomes the administrator of a school’s anonymous community app called "Inssa Time," gaining access to the secrets of all students. She gets entangled with popular student Kang Woo-bin, setting the stage for a high-teen secret romance.