← K-pop events in SeoulPop-upBOYNEXTDOOR × OLIVE YOUNG Pop-Up (Hongdae)BOYNEXTDOOR📅 WhenTue, September 29, 2026 – Wed, October 7📍 WhereOLIVE YOUNG Hongdae Playground · Mapo / Hongdae / Sangam Open in Maps ↗Source ↗Plan a trip around this event🎟️ Recommended activitiesKlookSeoul K-POP Fan Tour: Real Idol Show & K-POP Agency VisitCheck price & book on Klook ↗KKdayK-POP Fan Tour in Seoul: Agency Visits & Iconic LandmarksCheck price & book on KKday ↗