The moon reminds me of princess kaguya you have the same name. Maybe you have special fondness for it too. Then the female voice talks saying when I look up at the night sky, I can't help but think of the story about that woman who was forced to return home to the moon abandoning the one she loved that's why I hate the moon" and then the guy replies "still if you think about it princess kaguya did everything she could to reject her suitors do you think a woman like that would give an immortality potion to the one she loved? Even if the distance between them was hopeless I think she gave him the elixir of immortality imbuing it with the meaning "I'll wait for you forever" but the man didn't pick up on her message so he said something moving and had the elixir burned. I would've read the meaning between the lines and it would've had a very different ending then she replied " I can't take I told you thats enough it's embarrassing!' - that's what the dialogue is about in that song.