Kira is bound by a very ordered code of ethics as set down by a Legendary Warrior/Philosopher who is credited with having lifted her people out of a Barbarous society that was headed for self destruction.
This is a very complete code because it doesn't cone from this Roleplay but one I played in during collage
Our GM had over 100 quotes by the Longwalker and they are all very similar to the Book of Five Rings or SunTzus Art of War and a hint of the codes of Chivalry