I've been doing some thinking about the scene towards the end of the peekaboo MV.
So all the girls one by one, take the pizza guy into the car. At first I thought that they were saving him but now i have a theory (kinda).
I'm bad at theories but still:
Were they like hypnotising him? Or trying to implant information into his brain one by one? The Mv's visuals are pretty cult-ish so it does't seem like that far of a reach for me. At the end when Yeri steps out of the car, maybe she's coming to finish the job?