The K-pop bands were doing their thing, each in their own place rehearsing or whatever... When out of nowhere they appear in a movie theater

The K-pop bands are: Blackpink, TWICE, ATEEZ, ENHYPEEN, Stray Kids, and BTS

The four members of BLACKPINK are Jisoo, Jennie, Rose, and Lisa

The members of TWICE are Nayeon, Jeongyeon, Momo, Sana, Jihyo, Mina, Dahyun, Chaeyoung, and Tzuyu

The eight members of ATEEZ are Hongjoong (leader, rapper), Seonghwa (vocalist), Yunho (vocalist, main dancer), Yeosang (vocalist, dancer), San (main vocalist, dancer), Mingi (main rapper, dancer), Wooyoung (main vocalist, main dancer), and Jongho (main vocalist, maknae).

From Stray Kids: Bang Chan (leader, producer), Lee Know (main dancer), Changbin (main rapper, producer), Hyunjin (rapper, dancer), Han (rapper, vocalist, songwriter), Felix (rapper, dancer), Seungmin (main vocalist), and I.N (vocalist, maknae).

The seven members of ENHYPEN are Heeseung, Jay, Jake, Sunghoon, Sunoo, Jungwon, and Ni-Ki

The members of BTS are RM, Jin, Suga, J-Hope, Jimin, V, and Jungkook

(P.S.: You can add or remove characters)