Simple anime with no distinct characters. Lowest ratings given. However, a certain amount of thought can be seen given for the plot behind the story of the two characters. They seemingly have a close relationship and their journey/story. Much more have to be read and interpreted by oneself. Bitter sweet and beautiful, could have been better with the animation. It was a rather rough work. Rating: Story- 5/10 Art-5/10 Sound-5/10 Character-5/10 Enjoyment-5/10 Overall-5/10.
TL;DR It is mediocre at best, however it is a short piece so you should give it a chance and see it with your own interpretation of the story. It is what I believe the author and the illustrator is trying to tell the audience that they should find their own interpretation of the story/animation.