A teaser has been released for ENA's two-part documentary "Words Unspoken" (literal title "Hajimotan Mal"), in which IVE member Gaeul serves as an AI presenter. The documentary is a nonfiction AI project shedding light on stories people have long kept inside, truths they could not tell and messages they could only deliver at the very end. The teaser opens with Gaeul walking down an alley with a serious expression and the question, "What are the words you could not say?", followed by the hesitation of interviewees. The program is hosted jointly by the real Gaeul and another Gaeul created by artificial intelligence, who relay each story. Part 1, "I Have ADHD," follows a person who could not tell their parents about their ADHD, while Part 2, "Testimony of the Dead," deals with social issues and grief through Exit 1 of Itaewon Station and bereaved families. The production team said it "will be a journey of listening to the sincere voices left in someone's heart." Part 1 airs on November 22 at 11:20 p.m., and Part 2 on November 29.