Social Media · TREASURE Era
Social Media — 'Talk Talk' Fan Event Announcement
Seonghwa announcing the start of a "Talk Talk" fan interaction event via ATEEZ's official X account, directing fans to the official homepage.
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.