Demifiend's History
The Demi-Fiend (人修�?, "Hitoshura") is the protagonist of Shin Megami Tensei III: Nocturne. Through the tradition of the series, he is a silent protagonist, where his personality is based upon players' actions and decisions. At the beginning of the game, the Demi-Fiend is a blank slate, being unsure of the role he is to play in the world that is to come; creator or destroyer, master or servant. This is most clearly seen when Kagutsuchi scans his heart at the moment of the Conception. The divine being finds nothing there, no defined ideas or motives, and decides he needs to find his own ideology and Reason in the Vortex World.
During the game, his personality develops further depending on the choices of the player, molding him into a follower of either Reason or a person who rejects all of them, either through weakness, a true desire to see the world reborn, or an honest wish to end the eternal cycle of death and rebirth. The definitive moment is when Kagutsuchi, at the entrance of the Tower of Kagutsuchi, again scans his heart and determines what lies within.
Through the player's choices throughout the game, the Demi-Fiend's personality can be developed further, revealing character flaws and strengths, changing others' viewpoints of him and affecting the possible ending, redefining the laws of reality and creating a new world.
He may support the Reason of Musubi, the belief of solitude and individualism. In this new universe, every individual would live in their own independent world, shaped from their mind to be their personal paradise, though fully separate from all other living beings. He may support the Reason of Shijima, based on stillness and oneness, and the suppression of human desires. It is a world of perfect harmony, without passion, conflict and destruction, and finally fully devoid of individuality. Or he could support the Reason of Yosuga, formed from elitism and the survival of the fittest. In this world, those who are weak are undeserving of life, while only the strong may become rulers, and power is the most important thing there is. It is a world of paranoia, fear and carnage.
However, the Demi-Fiend may choose to reject all said reasons and follow his own path. In the Demon Path, he will lack the Reason to create a new world, and instead chooses to forego the process of creation, leave the Vortex World as the barren, desolate land populated solely by demons that it is. Through the Freedom Path, the Demi-Fiend may revert the world to how it was before, and every human being killed by the Conception is reincarnated, though as explained by Kagutsuchi, the world of men is one of chaos, suffering and without future.
Finally, the Demi-Fiend may walk the True Demon Path, rejecting all Reasons and freeing himself from the last vestiges of his humanity. Becoming a complete demon of Darkness, allying himself with Lucifer, he kills Kagutsuchi, ending the cycle of Death & Rebirth, the Amala Universe and the concept of time itself. He and Lucifer then march onward, leading all demonkind in the final battle against God himself.
