Well, I ignore if this Doujin is based in something (I suppose it) but however is really good. The artwork is simply awesome, just like a Kutani's Masterpiece can be; the plot is good, just some dialogues for some pictures; the action is fucking inciting, capable to shake anyone; and finally the censorShit is tolerable so it won't bother at all. Overall, and despite the fact that I don't know in what's based (if), I enjoyed it a lot.
Final Call: Really worth to Download.
Note: If anyone knows the inspiration for this Doujin, please share your knowledge.