Once Upon A Time…

There lived a Human. 

The human was a man born from the Wonder World. He never participated in war, and always advocated for peace. The Man was an Adventurer and traveled the massive different sights of the wonder world with Joy and Excitement. He met many different people, and creatures.

He Painted with Seiryuu.

He Hunted with Bayakko.

He Fought with Suzaku.

He Drank Tea with Genbu.

The man was joyful in all aspects.

One day, the Adventurer came down with a Deadly Illness… He traveled the world with A mass of speed, sought out every doctor in the land… but quickly came to learn that this illness was Incurable… it would be the death of him…

In his Desperation, the Adventurer turned to a man he thought he would never need to… An Almighty and magical man. A man who's lived for untold years and crafted the original God King Of the Wonder World… 
The Sacred Blacksmith, 
The Man's Own Father.

Making the Travel, the man arrived at his father's Cave And Forge, and begged that the man use his powers to heal him… He had so much more of the world to see and experience… he couldn't die now.

Sadly, the Blacksmith refused to heal his own son, not because he didn't want to, but solely because he was unable to do so. 

But! The Father offered his son a Deal.

His father was crafting a new Sacred Sword, one holding the power of Light, His father asked that the Adventurer become the Spirit of this Seiken Of Light…

The Kougouken Saikou

The Adventurer would be immortal aslong as his soul was one with the Seiken, and he would stay immortal until his disease was able to be cured.

The Adventurer was more than happy to take this offer… but it came with a Cost…

The Adventurer would be forced to be the protector of the Wonderworld. To fight wars for the sake of humanity, and protect his people.

As much as the Adventurer hated this, he saw that he had no choice and accepted the blacksmith's deal.

The Blacksmith then forged the Kougouken Saikou… but as he did a spirit was accidentally born inside of the blade.

The blacksmith seeing his mistake refused to see it as one, and transformed the newborn spirit. He removed it's Sentience, It's Personality and Mind. This spirit would simply be a Shadow of the Adventurer. 

The Shadow of the Seiken itself.

The Adventurer soul was then placed inside of the Seiken… Forming the Seiken Sword of Light and its Swordsman all in one.

To balance out the power of the Light Swordsman, The Blacksmith then created the Sword of Darkness, although it lacked any sort of Spirit whatsoever.

The Ankokuken Kurayami

Using the power of both these blades, the Swordsman enacted his first action as the Guardian of the Wonder World, combating and sealing away the Seiken Sword of Humanity once and for all, wielding both blades of light and darkness.

Many, Many, Many, Many Years passed.

The Swordsman continued to protect the Wonder World, offering his power to an Author… the man wielding the Seiken of Flame, the Kaenken Rekka, the final Kamen Rider Saber.

With other Seiken Swordsmen, together, they saved both worlds from the Wrath of Storius.

The Swordsman then began on his next quest, seeking out the cure for his Incurable illness… only to learn that it had become something so curable, that it was now simply known as the Common Cold.

The Light Swordsman then severed his soul from the Seiken Sword of Light, and lived on the rest of his days happily as a human…

THE END.

*Clack*

A small Wonderide Book was closed in the hands of a man, revealing its odd form.

The man holding the Wonderide book looked up at the sky of the Wonderworld before turning around, facing the grave of his father. The Swordsman then took out the Kougouken Saikou and stabbed it down into the Headstone of the Grave, before taking a small bow.

"Thank you for everything… old man… Thank you truly, for letting me live out my dreams, and giving me brand new ones."

The man said before he turned and began walking off.

Deep inside of the Sacred Sword… the light of this beautiful inner world filled with the memorabilia of The Light Swordsman's adventures slowly faded and reduced to nothing… as the light quickly began to fade as the swordsman walked farther and farther away from the Seiken… as the last bit of the world began to fade… oddly enough, a figure was seen collecting certain objects before they faded away… a pitch black Silhouetted figure marched through the slowly darkening world, gathering up as many books and objects as possible, as the light of the world faded more and more.

I collected them as fast as I could… because I didn't wanna be left without anything…

As the light slowly died down as if the sun was setting for the final time… I watched as everything faded away… I was left on my own… in an endless limbo… with nothing but a mass of books to keep my company…

The figure stood there, staring at a symbol of Saikou on a wall infront of him… the colors slowly fading away… until there was nothing left but the outer shell of the symbol… the part that belonged to him… the… the part that belonged to me…

Once Upon A Time…

There Was A Sword.

The Kougouken Saikou

A sword built to house the soul of a man, the Light Swordsman, Yuri.

But… In his Rush to finish the blade… the Creator accidently put a spirit inside the Seiken Of Light.

The Blacksmith tried to fix this, reducing the Spirit to nothing but a Shadow of the True Spirit of the Light Seiken… He removed the spirit's mind, its sentience and will… well… tried is a better way of phrasing it…

The Shadow was simply that… The Shadow of the Light Seiken Swordsman, yet… it held its own mind, it was aware of its own existence as a shadow… and it honestly didn't mind all that much.

Shadow was happy all of its existence, it saw Yuri, his wielder as an Elder Brother. And his fellow Seiken Spirits as a family, with Kurayami as his own Younger Brother.

Upon his birth, The Haouken and the Kougouken were instantly as close as siblings. Shadow taught Xross the ropes of everything. Especially how to deal with being overshadowed by his Dragon brother, hehe get it? 

*Ahem*

But, despite how long it lasted, nice things don't last forever.

The War for the Wonder World had ended… All the Threats were gone… and so was the need for the Seiken…

I remember the day when we all said goodbye one last time.

Gekkou wouldn't stop crying and hugging us… Xross… was distant… but all it took was one of Gekkou's hugs to snap him out of his funk…

I don't think anyone noticed except me… That in the final struggle he was forgotten… he tries to act like everything's normal… but I can tell it was eating at him…

After our final goodbyes… I was left at Father's Grave…

When Yuri left, I gathered all the Manga he collected… and watched the light fade…

A Shadow is a Lack of light… on its own… a shadow can't illuminate a thing… I am the Shadow of Saikou… so… on my own… in powerlessness…

I can't even manifest my spirit into the real world… 

Yuri had a dream… and when he left… I think I got one too…

To Have A Strong Wielder.

Someone powerful and awesome! With a strong ambition and ideals!

Kinda Like Luffy! Hehe! He was my favorite character in the Manga Yuri left behind!

I wanna new wielder! Someone super strong! Someone who I can truly shine with! I want my new wielder to know I exist! I don't just wanna be their shadow! I wanna be their friend! A part of their Crew!

To Have Someone with a Strong Will As My Wielder!

That's My Dream!

My First Ever Dream!

And when I meet them, I won't introduce myself as Shadow!

I'll be Sai!

The Spirit of The Kougouken Saikou!