I know the Japanese voice actor so I am supporting this anime 100%.
It came very strong with the opening (Episode 1), and the storyline of defectors being murdered one by one by the new "Shinobi" regime.
Overall, Higan reminded me of Obito, and with the red eyes, the Uchiha clan (Naruto).
The nanotechnology and Higan's suit reminded me of Arbalest (Full Metal Panic).
Plotline was pretty straightforward. However, they were killing off bad guys without giving away their personal background.
Thus, giving it a 4 STAR instead of 5.
Prediction: Zai will most likely betray his master, and Higan will become the new head clan.