"We continue the journey
Little Dal seems a have squid
So whether acoustic love the sound of love"
After this terrible translation by google and my lack of knowledge of the japanese language, the only thing that I can use to make sense of the story and meaning behind this music anime is it's visuals, and boy did they give me a lot of stuff to work with.
One of the things that's very different from music anime and just anime is that a normal anime needs to be understood to some extent on the first viewing, while music anime is, in my opinion, made to be watched several
It's only a song long and not understanding what's going on doesn't hurt the experience too much because the music is a very important part of it. Just enjoying the music, which I certainly did, is more than enough motivation to watch it again. All the while understanding the story told with the visuals better on each viewing.
And those extra viewings were certainly necessary to discover the meaning behind Ainone.
So, what's it about? Or a more accurate question, what did I believe it to be about?
The answer can already be seen by the first look we get at the main character. She's sitting on a tree, looking at a seed (of presumably the same type of tree). This is about changing over time, and about how people value you for what you are to them now, and not for what you could be.
Now I'd love to go scene by scene and say what they all meant to me, but I believe this is a process that needs to be experienced, since discovering the meaning behind the story and the scenes is what makes this show so enjoyable to watch.
Although there is barely any real character development, mostly due to the fact the facial expressions are very hard to read with this unique artstyle and animation, this doesn't really have any negative effects on the show.
In the end (of my 20ish consecutive viewings) I (still) enjoyed listening to the song, and although I couldn't disagree with some who claimed the story was incompetently told, I quite liked it.