Happy 11th Birthday ONCE!

Why Koreans care

The title frames the fandom itself as an 11-year-old having a birthday, making ONCE—not TWICE—the subject of the celebration.

In the Korean comments

One comment extends that birthday metaphor into a shared future: in translation, “Happy 11th birthday to ONCE. Let’s keep growing old together.”

What the words mean

“같이 늙어가요” (gachi neulgeogayo) literally means “let’s grow old together.” Here it is an affectionate invitation for ONCE and TWICE to remain together for years, not a remark about aging itself.