The Assassin agreed to kill the Hero simply because he wanted to experience the happiness he could not have in his previous life due to him suppressing his emotions. The Goddess allowed him to choose special powers and abilities, but warned him that he only had eighteen years after his birth to kill the Hero before the Hero brought chaos into the new world. She also told him that there was a slim possibility he could save the world without actually having to kill the Hero. He is then reborn as a child of the Tuatha Dé family, a noble house of assassins...