In this world where colors are elemental power, there lies the dark creatures of the Umbra Mirrorverse running amok within every region of the continent, and especially in the Kingdom of Seven Colors, Irisvale.

In Irisvale, there wasn't a royal family to rule over the kingdom but seven dukedoms of each of the seven colors of the rainbow: Red, Orange, Yellow, Green, Blue, Indigo, and Purple.

They were named after the founders who first received their powers and defeated the first evil of Gray, so their powers, regional countries, and family surnames would also be named after them.

But after some times have passed, the dukedoms would have slightly different colored branch families that would soon create the hierarchy system from the Dukes down to the Barons. The other branches would have a slightly different power than the original main bloodlines.

As for the normal citizens, they used to wear colors that weren't the dukedom colors as to differentiate between who was the colored family household members and the commoners. After new eras passed, the citizens who lived in the dukedom countries would wear the colors associated with the duke families and for those who lived in the main kingdom of Irisvale, they wore all seven colors.

Red was the one to bring forth the air and reach the sky.

Orange was the warmth to light the cold, scorch the shadows, and to start the agriculture reign.

Yellow was reminiscent of White, to heal and return destruction back into its original form.

Green was Mother Nature embodied, to create life in every shape and form in the sacrifice of one's own soul.

Blue was the liquid flow that cooled life's burning energy and supported its colors in all trades.

Indigo was gentle, yet like the night sky it was always there to forever watch over all life once it was dark.

Purple was reminiscent of Black, but unlike its predecessor it can bring those who enter nothingness back from it and create worlds that warp time and space.

Together they were the rainbow, and together they created the Kingdom of Irisvale alongside their own territories. But even after defeating the Gray Abyss, the remnants of evil still spread across the kingdom.

This caused the formation of the Knights Order and Adventurer's Guild to subdue the enemies of the continent so that peace could be ensured.

The Knights Order had a total of six army teams of the colors, with unique abilities stemming from an unusual phenomenon called the 'Arc en Ciel' phenomenon. This event causes a random citizen that's not from the main seven families to awaken one of the many powers associated with the color, which gives them no choice but to join the Knights Order because of it.

Each squadron was created by the order of what the affected citizen's power was.

The Scarlet Knights were those who had the power of Red so they were trained to be swift and fluid to escape the sight of the opponents, eventually aiming for their weaknesses to slow them down.

The Azure Knights had the power of Blue, so they were trained to be the support and the backup army if other armies were busy or failed in their duties. They observe the battlefield like hawks and strike when necessary.

The Sol Knights were the medics, the knights of Yellow, who could heal others while in battle with enemies and recreate their equipment if it shatters.

The Amber Knights wielded Orange to blaze across the battlefield as the frontline army, being the ones to train their bodies the most to have the best durability in battle.

The Verde Knights utilize Green to set traps and lure the ill-intentioned to an area of deceit, either stalling for reinforcements, poisoning them slowly, or lowering their guard before attacking.

The Void Knights were the infamous holders of Purple, using their warped space ability to counterattack the opponent's offense. Not many were supportive of them during this age.

The reason why there were no Indigo Knights was because there were no records of any citizen awakening the power of Indigo, and another factor is that the Indigo Dukedom decided to turn to religion and become the Temple of Indigo in the second generation that only produces one Indigo Saint or Saintess once in a lifetime. There would be no other person with the power of Indigo except them.

As for the Adventurer's Guild, those without powers can fight alongside the Knights Order by becoming adventurers. If one adventurer awakens the power however, they will have to transfer over to the order without any other choice. Fortunately, it excludes those with late awakenings within their prime.

The continent braved against the Gray for a long time, yet as the inhabitants get stronger so does the Gray Abyss.

This story starts within the Country of Red, in a place that will start to unlock the hidden mysteries within in the Continent of Colors.