Mach Zero: Perpetual Motion

The country of Aresotsu is on the brink of declaring war against the long standing Genocreal Empire. They've had skirmishes for years, causing damage to both their countries and people. on accusations of being spies for the Genocreal Empire, Leon Orimura's parents are executed right in front of him. His hatred leads him down the path of an assassin until he meets a young girl who is convinced she can change him for the better.