The male promo, who is a comedian I believe, is like a man lamenting IF he had a time machine, what would he do? There are many things that he wanted to do but the one he loves is the most important. It's just about that
I hope we can expect more beautiful PV like this at least for Japan's release

they could've make one story with one girl protagonist but the girl's role will be switch between the nine girls for the sake of dividing screen time