Social Media · TREASURE Era
Social Media — 'Wish I Could Time Machine to the 24th'
A pre-debut message from Seonghwa posted via ATEEZ's official X account, captioned "I wish I could take a time machine to the 24th" — referring to ATEEZ's October 24, 2018 debut date.
Official Sources
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Era Context
TREASURE Era · 2018 – 2019
The debut chapter. Seonghwa steps forward as a founding member of ATEEZ, establishing his stage presence and vocal identity across the group's earliest title tracks, showcases, and early international promotions.