BABYMONSTER's final Seoul concert under the '2026-27 BABYMONSTER WORLD TOUR [CHOOM]' took place on the 28th at 5 PM at Jamsil Indoor Gymnasium, drawing a global audience of devoted fans known as 'MonSTIES'. The venue was filled with fans sporting personalized red and black styling, the concert's official dress code, while many creatively decorated their light sticks with ribbons, figurines, and stickers. Attendees ranged from friends who gathered from various cities including Chuncheon and Daegu to families with young children. A 15-year-old fan named Woojiwon expressed her love for member Ahyeon and eagerly anticipated performances of 'Choom' and 'We Go Up'. Despite the diverse nationalities and languages heard throughout the venue—English, Japanese, and Chinese—all fans shared an unwavering passion for BABYMONSTER.