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.@JYPETWICE's Nayeon's 1st EP "IM NAYEON" has racked up sales of 500K units in just pre-orders. Half-million-seller title is in the bag even before #NAYEON's official solo debut today at 1 p.m. (KST)! And now, drum rolls for the last coundown, please! 🥳🙌 #IM_NAYEON #TWIVE