Also written: 2026 한글날 전야제
8 Oct 2026 · Gwanghwamun Square, Seoul · AtHeart · 2 songs · 7 cams
Setlist: 3!4!, 내 마음 한 조각
One video per song: Arin 3!4! fancam, Nahyun 내 마음 한 조각 fancam
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