THE WORLD Era
Seonghwa's INSIDE OUT
Seonghwa's episode of ATEEZ's "INSIDE OUT" solo-content series.
ATEEZ Official YouTube — 성화's INSIDE OUT (opens in a new tab)
Seonghwa's individual episode of ATEEZ's "INSIDE OUT" solo-content series on the group's official YouTube channel, part of a recurring format also produced for other members (Hongjoong, San, Yeosang, Wooyoung).