In the dimly lit locker room, Twice's members, Nayeon, Jeongyeon, and Momo, lead the charge, their eyes locked on each other as they strip. Momo's hands trace the curves of Nayeon's body, while Jeongyeon's fingers slip under Momo's panties, eliciting a gasp. The room heats up as the others watch, their breaths hitching, hands sneaking into their own underwear. The air is thick with the scent of their arousal, their moans echoing as they pleasure each other, their "Cheer Up" turning into a seductive mantra.