K-pop girl group OURBIRTHDAY made its official debut Wednesday with its namesake first single, "Our Birthday," ending a two-stage predebut rollout that split the seven members into separate units. The group held a press showcase at Blue Square in central Seoul's Yongsan District just hours before the release, sharing their thoughts on the debut and future plans. OURBIRTHDAY is the first K-pop girl group associated with JYP Entertainment since NMIXX debuted in 2022, and the first to launch under the company's subsidiary label, INNIT Entertainment. The group's name refers to the members' aim to treat ordinary days as if they were birthdays. "This is a moment all of us have been waiting for, so we're excited," member Cho Hye-jin said. "We prepared hard through the predebut period, and it means a lot to finally be promoting as a complete group." U said the team name shaped her expectations, noting, "When I first heard it, I thought every day would feel happy and special." Baby chimed in, adding the lineup only became real to her at that point. "It didn't sink in that the seven of us were debu