The visuals and tone are great, and all of the characters give off a lot of charm, almost like you've got a Saturday Morning Supercade or Captian N thing going on. I've got no knocks against the gameplay itself, but the controls and interface leave some to be desired. I kept getting killed by ninja gang bangs upon entering combat, or my muscle memory telling me that S is for down. You could probably alleviate most of that by adding an option for automatically entering combat mode or not having entering combat pass time.
Other than that, the game seemed to randomly crash a lot in the ninja fort, and it would crash repeatedly trying to exit the area. If there's anything to the demo, I wasn't able to get to it.