Dragon of Eternity

The Dragon of Eternity or simply known as the Electro Dragon Sovereign was the ancient ruler of Inazuma before the arrival of the Heavenly Principles. 
After the Primordial One defeated the whole Seven Sovereigns, the Electro Dragon reincarnated as Raiden Ei. 
== Profile ==
The original Electro Sovereign was one of the Seven Sovereigns, the seven dragons that ruled over the nations in the old world. According to Inazuma's History, the reason behind the Sovereign's name was the islands having an endless thunderstorm and rainfall, resulting a "sign of eternity", then the Electro Sovereign was also referred as the "Dragon of Eternity". 
There are also legends that the Electro Sovereign once fought the Sovereign of The Mermaids, instantly defeating them, and became a popular article since the ancient times. 
After the Sovereigns' defeat, the Dragon of Eternity was reborn into a human female, which may the Heavenly Principles not knowing about this new article, not even a one thing hearing the survivors. 
The reincarnation of the Electro Sovereign was known as Raiden Ei, the sister of the Electro Archon, whom the sister believe that Ei will be her sucessor. She also participated in the Archon War, slaughtering two historical figures known as the Orobashi no Mikoto and Akuou, then outcomes that the Watatsumi Army creates an unusual rebellion against the Shogunate. 
Even after the cataclysm, Ei knew about the mystery of the Seven Sovereigns, as she realizing she is the reincarnation of the original Electro Sovereign, she decided to fullfill her desire: prepare for the future of the heavens to disappear one day. 
Raiden Ei reveals about her previous incarnation prior to the arrival of the Heavenly Principles, wishing them to be gone.
=== Appearance ===
The Dragon of Eternity is almost reminiscent to that of a Japanese dragon, with dark violet skin, and bright purple eyes.
== Other Languages ==