HAPPY预发布派对的客人名单：
TXT/ Lee Yi-Kyung/ Park Bogum/J-Hope/ EXO Chanyeol, Suho/ Ken/ Lee Sung-kyung/ Cha Eunwoo/ Sandeul/ Lim Young Woong/ Red Velvet Wendy, Irene/ Seventeen/ Lee Hyun/ Irene Kim/ Twice Dahyun/ Actress Ji Ye-eun/ Kim Soo-hyun ​