Good-old ninja stealth in good traditions of tenchu series. You hide in a shadow and move without a sound. You strike suddenly and whenever an enemy sees you it is already too late for him. You will use a variety of ninja skills and devices and will reveal the story about the dangerous group of conspirators that want to provoke a war between two nations.
New models for the guard enemy and the main hero character.
Uhhhh...pretty!
But you should keep the first model as an easter egg.
Why not? Thanks for the idea!