The Dangers of the Realm of the Dead
Once the means to connect with the departed was unraveled, precautions became paramount. It was discovered that their realm responded to the thoughts and emotions of the living, shaping itself according to their memories, hopes, and fears.
Aware of the potential consequences of even a fleeting thought leading to disaster, travel between the worlds was restricted. Powerful weapons, crafted using accumulated knowledge, were hidden away until their necessity arose. A once potent temple was cast into the depths to prevent cataclysmic consequences.
Yet, one among the Priests dared to explore the audacious idea of merging the two realms. He comprehended the necessity of keeping the worlds separated to maintain harmony between the realm of the living and the realm of the dead.