Lei Daozi is one of the long-deceased characters in I Shall Seal the Heavens that is often mentioned in passing. He was one of the strongest cultivators in Paragon Immortal Realm, and was present in the war that ultimately spelled his realm's demise. He incurred battle wounds he would die from, leaving behind his armor that would later become Ultimate Vexation.
History
Eons past before the Vast Expanse came into being, the Ancient-Immortal spirit alongside Allheaven was forced into dire straits by Lord Fifth, a subordinate of the enemy of The Immortal; Allheaven's true body. Seeing no other way out, Allheaven then forced the Ancient-Immortal into self-detonating, but contrary to expectations she instead unleashed a Nirvanic Rebirth Curse — an absolute and perfect disintegration of the body and the will. The final technique she released was something that created a new epoch, a new world and a new beginning. Within that new world, a reincarnation of the Ancient-Immortal was born, the woman was unaware of her previous life and was sent to the cycle of reincarnation over and over again for incalculable epochs, experiencing numerous lives. It was then fated that she met a person in one of the tinier worlds within the Vast Expanse, the Paragon Immortal Realm. That person would come to be called the Lightning Emperor. He came to love her and would later become the woman's husband.
The lower realms of the Paragon Immortal Realm rebelled, incited by the actions of Allheaven. The Lightning Emperor fought for his home, for his people and for the woman he loved and cherished. The battle would span thousands of years, causing massive counts of deaths, the Lightning Emperor amongst them. After dying, innumerable lightning bolts from his body was sent out causing tremors in the entire area. His wife wept by his side, her tears falling down on his armor. In that moment of grief, her previous life's memories were unsealed. As her tears vanished, so did her feelings for the Lightning Emperor. She departed, never to be seen again.[1]