AtHeart has marked a significant milestone in their global journey with a successful performance at the Yoyogi National Stadium First Gymnasium in Tokyo. On March 14, 2026, the group participated in the '42nd Mynavi Tokyo Girls Collection 2026 SPRING/SUMMER' (hereafter 'Tokyo Girls Collection'), a premier Japanese festival that bridges the worlds of fashion and music. As a major event featuring top-tier influencers and global artists, the stage provided a massive platform for AtHeart to prove their potential even before their official debut in Japan.
During the event, AtHeart delivered the first-ever live performances of their double singles, 'Shut Up' and 'Butterfly Doors', which were released between February and March. The group first took the stage with 'Shut Up', showcasing a bold and confident attitude through a powerful performance that captured the audience's attention. They followed this with 'Butterfly Doors', which featured a more fluid and sophisticated choreography inspired by the movement of butterflies. The seamless transitions and precise domino-style performance during the second track drew an enthusiastic response from the crowd, solidifying their reputation as the “fifth-generation heart” of the K-pop scene.
This successful international appearance follows a string of digital achievements for the group. Both 'Shut Up' and 'Butterfly Doors' recently secured the #1 spot on the YouTube Daily Shorts Popular Songs chart, and the combined views for both music videos have rapidly surpassed 8 million. Following their impactful performance in Japan, AtHeart is scheduled to return to Korea this week to begin official domestic comeback activities and music show promotions for 'Butterfly Doors'.
SEE ALSO: AtHeart's Bome and Nahyun make debut as music show MCs on ENA’s ‘K POP UP CHART SHOW’
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