Absolute Dedication is an essence gem which causes players to receive more experience points but to no longer receive any power-ups from killing humans. It has a counterpart in the form of Spirit Harvest, which does the same for ghost opponents. It can be found in the room of Kai Lan the Serpent, in the Imperial Arena.
In-game description: "With proper focus on the techniques of your human enemies, you pick up lessons and moves that help you develop your own style. Your dedication to learning in combat is so absolute, however, that you have no time or attention to seek recovery during combat. Only continued study, and not respite in crisis, is important."