Annie, a member of the rookie co-ed group ALLDAY PROJECT, revealed her daily life as the child of Jung Yoo-kyung, chairwoman of the Shinsegae Group, and shared affectionate moments with her family. On the November 15th episode of JTBC's variety show "Knowing Bros," Annie talked about her stage name "Annie," rather than her real name Moon Seo-yoon. She explained, "It's a name given to me by Principal William when I attended an English kindergarten," and said that since her debut, both her parents and fans have called her "Annie."

Annie added, "When I get home, my mom even gives herself the nickname 'AM' or 'Annie's Mom,'" sharing the humorous communication within her family. This sparked interest in Annie's family relationships. She is the granddaughter of Lee Myung-hee, the late Lee Kun-hee's sister, and the eldest daughter of Jung Yoo-kyung, chairwoman of the Shinsegae Group. Annie trained as a trainee under Teddy's The Black Label before debuting as a singer.

Besides Annie, members Woochan, Youngseo, Tarzan, and Bailey of ALLDAY PROJECT also appeared on the show. Annie mentioned, "My mom calls herself A.M., which means Annie's Mom," emphasizing the affectionate bond within the family. Youngseo revealed, "I've never called Tarzan by his real name, which is Chaewon," to which Tarzan responded, "I've often heard that my name sounds feminine," explaining the origin of his name.

ALLDAY PROJECT, a group that has received much love since their debut in June, made their first appearance on this show. Annie made the audience laugh by saying, "My parents said I had to get accepted into an Ivy League school for them to allow me to pursue my dream of becoming a singer, but I think they said that because they didn't expect me to get in."

Tarzan caught viewers' attention by speaking in the Gyeongsang-do dialect. About his long hair, he said, "It takes about the same time to get my hair done as the female members," playfully whining. Bailey shared, "I have been working as a choreographer since I was 13 and have participated in choreography for Big Bang's Taeyang, BLACKPINK's Lisa, SHINee, Red Velvet, aespa, and others." The members revealed behind-the-scenes stories, saying, "Bailey also created ALLDAY PROJECT's choreography. His teaching mode and everyday self are very different."

Woochan attracted attention by revealing, "Before debut, I was Lee Soo-geun's rap teacher on a program." He shared an anecdote, "Because of the viral 'Santa meme,' strangers on public transportation would say, 'There's no Santa, Woochan,' or call from unknown numbers and hang up after saying, 'There's no Santa.'"

Youngseo disclosed, "Before debut, I was shocked when I saw the list of stage names given by the company and decided to use my real name," sparking curiosity about the potential stage names.

In this episode, ALLDAY PROJECT will showcase a medley of their hit songs in school uniform versions, perform their new song "ONE MORE TIME," and share various episodes. All of this can be seen on the November 15th broadcast of JTBC's "Knowing Bros."