TUDM is a oneshot that is part of a larger collection including Latakia the Witch, Greedy City and Konjac Rock, a few others, and A Lad's Christmas. (I can't remember them all so please correct me if I am wrong)
All of these oneshots are very strange and the feel you get when reading any of these is different from most more mainstream manga. It starts with the art which gives it a bit of an older feeling. There isn't always a clear goal, and the characters actions can be questionable and immoral at times, and strangely enough their decisions and interactions can make you think
about life and the human condition.
If you're looking for something different, here it is. I'm actually not sure if I would recommend this to everyone, but if you're still reading this review at this point then why not give these oneshots a read?