ALLDAY PROJECT is a Korean mixed-gender K-pop group that debuted on June 23, 2025, under THEBLACKLABEL (YG). The members are: ANNIE (rapper), TARZZAN (rapper and dancer), BAILEY (rapper and main dancer), WOOCHAN (rapper), and YOUNGSEO (singer). The name "ALLDAY" signifies their aim to break free from genre and format limitations and explore new boundaries, and despite having the word "PROJECT" in their group name, they are an official group. This is THEBLACKLABEL’s first ever co-ed group, and notably, they are only the second mixed-gender group in Korea since KARD, making them highly attention-grabbing. Their diverse lineup drew significant interest even before their debut. ANNIE is the eldest daughter of Chung Yoo-kyung, CEO of Shinsegae Group, making her Korea’s first "chaebol" idol. TARZZAN, who was active as a model before debuting, studies at the Korea National University of Arts’ Dance Department. BAILEY, already a skilled choreographer and dancer, is a Korean-American well known for creating many K-pop dance routines. WOOCHAN appeared on Show Me The Money 6 prior to debut and was the youngest contestant ever to pass the preliminaries. YOUNGSEO was originally planned to join ILLIT but left the group before their debut. Their debut EP FAMOUS and its track "WICKED," released on June 23, 2025, soared to number 8 on Melon’s Top 500 chart the very next day. On December 8, 2025, they released their first EP, ALLDAY PROJECT.