[immel]

The translated comment on the momentum PV from the interview:

Mr. Kaz: The PV also has that “sad/missing/lonely” and “fragile” feeling!

Ayu: What I want to express through momentum is that our feeling (=heart) and actual behavior don’t actually follow each other. We know things in mind, but we do it anyway… that point, the director Takeishi-san understands it well and make it into the PV. I want to touch him/her but I can’t. I want to appear in sight of her/him, but I should not. I know it, but I can’t stop crying, something like that…

Mr. Kaz: Yeah! That’s exactly like that. But for now we also have a dilemma that we want to tell the truth (answer) of the PV but we can’t say that, right? LOL

Ayu: Yup! There’s also something fun waiting to be discovered by you, too!

Credits: asako @ ayunite

So there's indeed something for us to discover... the locker? Flower? What can it be. She wants to tell us something special.