First Ring King

The first Ring King was thought of as a hero that came out of nowhere to beat the Abyss that had started spreading all over the world. He was a beacon of light when all believed there would be no way to stop the darkness. He used the ring powers to push back the Abyss and seal the Abyss King. Then he disappeared as quickly as he appeared.

In Volume 7 the Satou's party finds out this isn't completely true and has a dark side from the Elder.

The Ring King was most likely just a farmer. He happened to find the first ring, the Ring of Light, in a field. After putting it on, he immediately realized what he was to do. Going around to the races, he married their princesses to gain the power of their bonds to fight the darkness.

But this also corrupted the man. He grew drunk on the power and realized that his bond with the princesses increased his power. He turned to lust, having his way with the princesses when he wanted, forcefully if need be. His power was feared by many, and were scared of what he would do when the war was finished.

When the Abyss King was sealed, the princesses conspired to kill the Ring King because of their fear and embarrassment they suffered. They cut his arm off and took their rings back while he disappeared into nothing. Before disappearing, he cursed the princesses, the rings, and any of their descendants that would use them. He did notice, however, only the princess of the Ring of Light felt pity for him.

The hand that was cut off stayed for some reason, and was placed deep in the Elves Graveyard in Romka under the great tree where all elven knowledge is kept.