I enjoyed the anime. Though my gripes are similar to my gripes with Library Wars, and that's the censorship. Of course, there's still some depictions that show Japan in a bad light, with the words and actions of the soldiers. With that complaint, the series is beautifully tragic. The ghibli art style works for this, and the censorship with the flowers makes it more impactful. I don't like censorship of the overall message of the story, but the flowers were a nice touch. It added a surreal element to the movie, made it seem like the MC wasdisassociating. The flowers emphasize the trauma that the MC has to cope with. The propaganda and always listening to the teachers shows another aspect of war.
I do recommend this short film. It's short and to the point. It tells a tragic story. It even has a plot twist at the end.