[SwordMage]

It is a decision that you make during your newbie quests as a Kojani Human or Half Elf. As you learn about the Jin (feel the Jin, Luke) you must decide whether to embrace the path of Lao'Jin (the light side) or Ra'Jin (the dark side). From what I can tell, the decision only has local ramifications as you move through the first few levels (and I understand, from some posts here, that the path of Ra'Jin may not be fully fleshed out and you may still end up fighting the Ra'Jin of the stronghold). I am still working through the level 10+ portion of the sequence on the Lao'Jin so I don't know how it turns out.