On March 21, 2026, Ock Joo-hyun celebrated her birthday with a heartfelt Instagram post, smiling in front of fan-prepared messages and thanking everyone for making her day special. She emphasized how meaningful each note was, leaving a sincere message of gratitude: "One letter—that’s enough."
The post quickly filled with affectionate comments like "HBD" and "Happy birthday, unnie," as fans cheered her on and wished her even more happiness.