Ark IX

I actually really like how it gave you a rough idea what the actual story is about. It unfortunate it isn't longer, I would have watched it. I think the fighting is nicely drawn. It is really hard to tell what type of story something will be about in such a short amount of time but I think the handled it very well.
I would really give this an 8.5 if I could because I do wish they would have made it flow a bit better. All in all a good 11 minute OVA.

A anime which will make you hyped! Attack on titan living-behind-a-wall-cause-monsters-outside-(and inside)-plot in sci-fi post apocalyptic setting! Awesome gun fu! Naruto like Ninjustu! Great opening/ending! The classic handsome mysterious male main character. Gangsters, big cooperational corruptions , robots, zombies, werewolfs, what not to like!!??
Well... only that little tiny detail that this is a one episode only 11 min OVA of a series which sadly seems like that it is not going to be animated....

This is your classic "trailer"/promotion for the manga... So f*** you for C**k blocking me those who made this OVA!! >.< Shame on you! :D

So yeah this is not recommended especially if ... it is easy for you being hyped ^^ so yeah only if you are like, maybe I should read the manga and isn´t sure to whether or not, this might convince you :P

There's not really much to say about this anime other than it has a confusing premise for a story despite being an OVA of about 11 minutes long, short character introductions, not so pleasant animations, and very poor directing from Shin Itagaki.

To be frank, I don't even know if this anime was even worth making an adaptation, if its only going to be extremely short and only feature one episode. It almost makes me think that the production company had nothing better to do with their spare time other than to make this. It really served more like a promotion rather than feeling like an ... OVA.

Overall, I don't recommend watching this anime unless you absolutely feel like watching it.