Meaning of MOON PV?

[waterballoon]

U know, I'm beginning to think this might be a song for Marron.

like, those footages of her with her dog (not marron right?) as if "filmed by a loved one", wasn't to show that there WAS a loved one filming her, but to convey that emotion; the closeness & warmth of a loved one filming her & her dong

as for the black ink, I'm thinking more & more that it might be guilt. Like for whatever reason Marron contracted cancer or whatever it was then, Ayu probably blamed herself for not being to take care of him properly or something, so in a way the ink is guilt pouring down on her, and weighing her down, and it's almost impossible to remove the ink (guilt) as well, as it probably would stay with her for the rest of her life...