This anime does not to Black General-san justice. The animation is taken straight from the manga its basically just paper cut outs being moved around on a paddle pop stick. Some scenes have awkward perceptive, this was originally released for a Japanese video app and as such it is made vertically in portrait mode. This is not so bad and understandable the episodes are rather short a a total of 3 minutes. The voices of the characters are fine and fit to what i imagined they would sound like in the manga. I understand this is a ONA but i don't see why this adaptionwas necessary other than voices added to the characters it does nothing.

From my knowledge there are no English subs but the Japanese is rather simple to understand if you have studied Japanese or even watched a large amount of anime you should be able to understand most of voice lines.

This is a retelling on the manga with lazy animation. Just read the manga for a dramatically better experience.