During the "Forgotten Epochs of Mankind," predating 2161 BCD, all historical records vanished, plunging humanity into an age of mystery. Despite this loss, fragments of ancient tales survived. Up to 15 PC (Post-Calamity), transgenesis and nexu usage were privileges of the nobility and high-ranking officials, seen as exclusive gifts. Nobles born without these abilities faced social ostracism and banishment. The era's allure lies in its enigmatic legacy, where whispers of forgotten civilizations echo through time.