Eternal Gaiden 9: Kamen Rider Seiryuu

In the ruined future of the World of Aura, Sei, the son of Kyoya and Salamandinay is seen flying in a low altitude and above the ground before he stops and hides behind a nearby wall as he looks out for his enemies.

After seeing it was safe, Sei continues to fly to the hideout of two of his allies.

Inside of a ruined building were two people with lots of high tech medical machines.

One of them was Maggie, with shoulder length graying red hair and was missing her right arm as her sleeve was folded in half.

The other was Dr. Gecko, her hair was slightly longer that it reached her back, and she was missing one of her wings and was wearing an eyepatch on her left eye.

Both doctors were working on their machines in double time as they prepared a special cure, as it was being filled in a glass bottle and air tight container and after a few minutes it was finally complete as the container opened and a mechanical tray brought the cure out of it as it was now sealed.

Maggie smiles as she walks to the cure and picks it up.

"We finally did it." Maggie said.

"Indeed we had." Dr. Gecko said. "Now all we have to do is…"

They soon hear the silent alarm go off, and they quickly take cover with Maggie behind a wall as she pockets the cure and quickly picks up her shotgun and Dr. Gecko hides behind a table as she has a grenade in hand as they face the only door.

They were on guard for a while before they heard a knock on the door in a certain pattern which was a signal to both doctors.

Hearing that made them relaxed as they lowered their weapons.

Opening the door was Sei.

"Maggie-san, Dr. Gecko, it's me." Sei greeted the doctors as he entered the room.

"Oh good, Sei, it's you." Maggie said as she put her gun down.

"My prince...I'm so glad it's you." Dr. Gecko said as she and Maggie came out of their cover as they walked to him.

"Sorry that I scared you. But is it ready?" Sei asked, and Maggie nodded as she brought out and showed him the cure.

"This…" Maggie said before she was hesitant to finish but still told him. "This might save your father. But I must warn you, the odds of success are 50-50 at best and worst yet it might cause more harm than good. Before I give you this I'll ask you again, are you really sure you want to risk Kyoya's life with this?"

Sei looks at the cure in her hand before he takes it in his own hand.

"I know that you're worried, and I know what I have planned sounds impossible. But my mother always told me to never give up on hope no matter how small it is. And that my father never gives in no matter how hopeless the situation is. So I'm willing to trust in that hope because I believe that he'll pull through no matter what." Sei told them.

Both Maggie and Gecko smiled to hear that.

They then heard a tremor nearby before it reached them as it shook the room.

"Damn it! They find us!" Maggie said as she picked up her shotgun.

"Oh no...they must have seen me and followed me here! I'm sorry, you two take the escape route, I'll handle them!" Sei said as he was about to head to the door to fight who had found them but Gecko stopped him as she grabbed onto his arm.

"No Sei-sama, we'll stay here while you escape." She told him and his eyes widened to hear that.

"What? No! I can't just abandon you two!" Sei stated.

"We're not telling you to!" Maggie told him. "You're fully aware that we're not important right now! You are! You need to save your father! And besides, if this crazy plan of yours actually works, then you'll probably see us again in a better future than this."

"But Maggie-san…" Sei muttered before they heard explosions outside and heard a loud banging on the door as cracks started to appear around it.

"This is no time to argue, kid! Go now!" Maggie told him.

Sei nodded and reluctantly followed Dr. Gecko to the wall on the end of the room as she opened a hidden panel with a switch behind it as she pulled it down to open a hidden door that leads to a tunnel.

"This tunnel will lead you outside! But no matter what happens, promise that you won't look back!" Dr. Gecko requested, Sei closed his eyes before he nodded.

"I promise." Sei said as he heads inside, and Gecko smiles as she watches him leave before she closes the door.

Dr. Gecko soon runs to Maggie's side holding a gun in her hand as the two doctors make their stand against the intruders banging on the door before they smash it open which creates a smoke cloud.

While they can't be seen due to the smoke cloud, and the one thing they had in common is that they look almost human with glowing red eyes.

Dr. Gecko and Maggie both scream as they fire against them and then...

A hatch open from the roof of a building, and climbing out of it was Sei as he took a few deep breaths before he heard an explosion nearby which made him stand up and saw the building that, Maggie and Dr. Gecko, were using as a hideout were now in flames and falling apart.

"No…" Sei mutters in sadness to see that before he grits his teeth and lowered his head before he looks at the cure that both doctors entrusted to him.

Sei rubs his forearm on his eyes and shows a strong determination within them as he swore that their sacrifice will not be in vain.

Sei then turns and heads to where his other allies were hiding.

Sei had arrived a few blocks away from his and his allies' hideout as he landed on the ground.

Sei was about to walk there before someone shot at his feet which forced him to stop walking.

"Halt!" Sei looks up to see someone aiming a rifle at him while hiding in a collapsed ruined building. "Whoever you are, turned back now!"

"Alektra, it's me." Sei told her.

"Sei?" Said his shooter as she walked out of her hiding spot.

She was a young woman around Sei's age with long purple hair tied in a ponytail and had sky blue eyes, she was wearing a black rider suit and was wearing Salia's ring.

This is Alektra, the daughter of Ken and Salia.

"Sei!" Alektra said as she ran up and hugged him, which surprised him. "I've been so worried…"

Sei returned her hug as he wrapped his arms around her.

"Sorry about that." Sei told her before they let go of each other.

"But wait, what about Maggie and Gecko, aren't they with you?" Alektra asked, and Sei looked down in sadness, and her eyes widened as she understood what happened to them to them as she shed a tear from her eye. "No…"

"They give their lives for me...and for this." Sei said as he showed her the cure. "And we have to make sure their deaths won't be in vain."

Alektra wipes away her tears before she nodded in agreement.

"Right, let's go." Alektra said before she and Sei to the hideout where their friends are.

Both Sei and Alektra were traveling on foot while in hiding as they were looking out for their enemies, and they soon arrived at their hideout which was the Hotel Mu La Flaga.

They soon arrived at the back and knocked in a certain pattern for a code for their allies inside.

They waited for a short while the door opened to reveal a 30 year old Vivian, who now has longer hair and a more developed figure similar to Ange's build.

"Guys, you're back!" Vivian said with relief to see them.

"Sorry to make you worry, Vivian." Alektra told her.

"So if you're, does that mean…" Vivian started and Sei nodded as he showed her the cure.

"This is it, right here. The thing that might help change this world." Sei said and Vivian smiles to hear that.

"Then let's get started." Vivian said as she let them in and Vivian closed the door behind them.

In the large back room of the hotel, two people were seen working on a large device while another figure was seen leaning on the wall. They soon heard the door opening, the two workers picked up a rifle and aimed them at the door and the third one picked up a spear as she was ready to fight, but soon stood down when they saw it was Vivian, Sei, and Alektra.

"Sei..." One of them said as he was relieved that he's back.

"Hey guys, I'm back." Sei told them as he looked at his friends.

One of them was Mei, now a 30 year old woman, with slightly shorter hair and as it was now loose.

There was a young woman around Sei and Alektra's age, she had red/brown hair that reach to her back and has silver eyes, she was wearing the traditional dragon clothes that was colored red, but was wearing Hayate's jacket and boots, and was wearing Kaname's jewel on her forehead and her spear.

This is Katsumi, the daughter of Hayate and Kaname's.

The last one is a teenage young man in Sei's age, with short brown hair and pink eyes and was wearing Tusk's pilot suit.

This is Van, the son of Ange and Tusk.

They smiled before they walked to Sei to greet him.

"It's good to see you man." Van said as he shook Sei's hand.

"You too, Van." Sei said before Katsumi hugs him.

"We've been so worried about you. Especially me." Katsumi tells him, and Sei hugs her back.

"I'm really sorry to hear that." Sei told her, and Alektra pouts as they were hugging each other.

"It's really good to see you, Sei." Mei said before he noticed that Maggie and Gecko weren't with him. "But wait, what about Maggie and Gecko?"

As Katsumi let go of Sei, he turned to the mechanic with sadness in his eyes as he shook his head, and Mei and the other understood what that meant.

"They sacrifice their lives for our mission. We have to make sure that their deaths weren't in vain." Sei told them and the others nodded in agreement.

"Then let's get to work!" Mei said as she and the others headed to three machines that were set on the back of the room.

They then look at three machines.

Two of them were Ange's Villkiss and Salamandinay's Enryugo. Both machines were badly damaged and beyond repair as they were missing a few of their body parts, but the shoulders that housed the Space Time Cannons were still intact as those were hooked up to the third machine.

It almost looked like a tunnel with three large metal circles with a platform beneath them and had a computer hooked up to it as well.

"But still, do you really think that this will actually work?" Van asked.

"It has to Van." Sei said. "We've worked too hard and too long to make it this far. This machine is our best chance."

"Which is all the more reason why I need to complete it." Mei said as she began to work on the machine as he connected a few wires. "I mean the chance to create an actual time machine is hard to pass up."

"And I'm still glad that you're up for the challenge. I really appreciate it, Mei." Sei told her.

"It's no problem. It's like you said, this plan of yours might be our last and best chance." Mei said.

"Well either way, thank you." Sei tells her and Mei smiles as she continues to work.

"You know…" Vivian said as she leaned to Sei's ear. "If you ask me, I bet you're really looking forward to meeting your father." Sei flinches to hear that before he turns away from her.

"What? No of course not...well maybe a little…" Sei mutters as his cheeks are a little red, and Vivian chuckles in amusement.

"Relax, I'm only teasing you. But don't worry, I'm sure you'll be fine. Heck, you'll even come to love him." Vivian told him as she patted him on the back.

"D-Do you really think so?" Sei asked.

"Of course. Kyoya's a great guy, and one of the best I've ever known." Vivian answered.

"Thanks. Truth be told, I'm still really nervous about meeting him. I mean, I've only heard stories about him from my mother, you, Mei, and from the rest of his oldest friends." Sei said.

"Hey! Who are you calling old?" Vivian asked as she was offended by that, and Sei waved his hands.

"Sorry, I didn't mean it like that!" Sei told her, and Vivian chuckles.

"Relax, I was only kidding." Vivian said before she looked up at the ceiling. "You know at first we were enemies, and he did a number on my favorite weapon. But he soon became a great friend and sort of like a big brother to me. So it was really hard to lose him like that." She said with some sadness in her voice.

Sei looks down in sadness.

"I'm sorry, I probably shouldn't have mentioned this." Sei said and Vivian slaps him on the back.

"Don't worry about it, it's fine." Vivian said. "And besides if this plan of yours works, then I'll see him again in a better future."

"Ture, but you'll also forget about this world too." Sei said and Vivian chuckles as she rubs the back of her head.

"Yeah, that's true." She said before she looked up at the ceiling. "But if we can all live in a better and bright future then it will be worth it."

"Vivian…" Sei said before he nodded. "Thank you. It really puts my mind at ease to hear that."

"No problem." Vivian said.

Then suddenly the room started to shake all around them which they all know too well what this shaking means.

"They found us!" Sei said.

"But it can't be. It's too soon." Katsumi said in worry.

"Suppose it's only a matter of time. Mei, how long until the time machine is ready?" Vivian asked.

"I almost have it ready. But I need more time." Mei told her.

"You'll get it." Vivian said before she turned to Alektra, Van, and Katsumi. "You three board your machines, and Sei…"

"You don't have to say it. I know." Sei said as he and the other left while Sei headed outside.

Sei was now outside of the hideout as rain fell from the clouds above and thunder appeared between, before he saw four elementals begin to gather in front of him.

The elements were water, wind, earth, and fire.

Then the four elements soon begin to take a human form with glowing red eyes as they face their enemy.

One resembles a female samurai with red armor and was wearing an oni mask on her face, she had hair made out of flames and her body was made out of fire underneath her armor and wields a sword made out of flames in her hand.

One resembles a muscular man with his body made out of rock and stone and was also wearing an oni mask with yellow pants, and was carrying a large hammer with a large rock on the tip of it, in his hand as he had it on his shoulders as well.

One resembles a female wearing blue greek armor with a blue cape on her shoulders, and wears oni mask on her face and wields a trident in her hand, and her body was also made out of water.

The last one had a body made out of wind with knight armor on his forearms, waist, and was wearing boots and was wearing an oni mask on his face and wielding a spear with a blade made out of wind.

"The Four Elemantals…" Sei said as he glared at them.

"At last we have found you, the last of our enemies." The Water Elemental said.

"You've done well to allude to us after all these years. But that will end here and now." The Earth Elemental stated in a cocky tone.

"With your deaths our rule over this measly planet of yours will now last forever." The Fire Elemental stated.

"Don't be so sure about that!" Sei said as he brought out a white belt buckle shaped as a dragon's head facing left with a blue 'eye' before he put it on his waist which makes a blue belt appear and wrapped around his waist.

This is the HeiryuDriver.

Sei breathes in deeply as did a hand sign and energy begins to channel into the HeiryuDriver's eye as it lights up.

"Henshin!" Sei said as he swung his hand sideways and downward which shoots lightning on top of him which created a flash of light as Sei transforms into a new form.

Sei's new appearance is that of a humanoid dragon with the skin acting as armor in ocean blue colored and red lines running through. The chest and abdomen area are emerald green colored and emerald green stripes on shoulders, arms, legs, hips and head. The wings are folded on his back and his tail is loose, the head is ocean blue humanoid dragon with eight red eyes which are a little closer to one another on each side, horns were on his forehead and spikes were on both sides of the head facing back.

This is Kamen Rider Seiryuu.

The Four Elementals were on guard against Seiryuu as he drew his sword from its sheath and soon spun it around and did a pose with it as he placed it on top of his other hand.

"He's mine!" The Fire Elemental said as she charged at Seiryuu and the Dragon Rider did the same as the two clashed their swords which created a shockwave as the two were in even ground.

Seiryuu then channels energy into his sword as blue energy and lightning surrounds his blade as it shocks the Fire Elemental before Seiryuu pushes her back and sends her flying as she crashes into a wall.

As the Fire Elemental fall on her hand and knee, Seiryuu unfolds his wings as he flies at the Elemental to attack her with his sword but a stone wall appeared in front of him to block his path which forced him stop before he turns to the Earth Elemental as he was the one who created the wall.

Seiryuu then saw the Water Elemental creating several spears made out of water as she launches them at the Rider, and Seiryuu dodges them by flying up in the air before he saw the Air Elemental flying towards him to attack with his spear and Seiryuu parries his attack with his sword before the two clashed their weapons a few times before the Air Elemental fired a tornado at him, and Seiryuu blocks it with an energy shield but was still sent falling back to the ground as he recovered and lands on his knee and foot.

As Seiryuu stood up he saw the Four Elementals had surrounded him.

"Cowards! You're that afraid to fight me one on one?!" Seiryuu exclaimed at the four Elementals.

"You should know by now, Seiryuu, we fight to win!" The Water Elemental started as she fired a torrent of water at Seiryuu with her trident, and the Rider blocked it with an energy shield.

Seiryuu then saw the Fire Elemental jumping at him to attack with her sword and he blocked it with his own sword.

"Don't think I've forgotten the humiliation you gave me!" The Fire Elemental exclaimed before she created a large ball of fire in her other hand and sent it at Seiryuu's face which created a large explosion, thankfully Seiryuu was unharmed as he jumped out of the smoke cloud.

Then the Wind Elemental travels like the wind as he flew in front of Seiryuu and attacks him, and Seiryuu manages to block his attacks in time and counters by slashing at the Wind Elemental but his sword phased through his body and the Wind Elemental stabs his spear on Seirryuu's chest and channels wind energy around its blade which sends him flying before he skids on the ground.

Seiryuu groans before he saw the Earth Elemental jumping at him to slam his hammer at him, and Seiryuu dodges it in time, and Seiryuu channels electricity around his sword and lands a powerful slashed on the Earth Elemental's chest which left a large wound on it as the Earth Elemental stumbles back.

As Seiryuu faced the Earth Elemental he saw that the wound he had inflicted on him was now healing as stone and rock gathered around it.

"Nice try." The Earth Elemental said before he punched Seiryuu as he was sent skidding backwards as he blocked his punch.

Seiryuu looks at he stops skidding and saw the Four Elementals standing in front of him, and then they each channel a large ball of their respective elements and throws at Seiryuu, and the Rider created a large energy shield to block their attacks and he stood his ground against their combined attacks but the Elementals attacks exploded in front of him as Seiryuu cries out in pain.

When the smoke cloud cleared up, Seiryuu fell on his hands and knees as he was badly wounded as his armor was damaged and his helmet was damaged as well as one of the horns was broken and some of his eyes were damaged as well before looked up at the Four Elementals.

"No it's time we finished you once and for all." The Earth Elemental said as he and the others walked to the wounded Kamen Rider.

"We don't think so!" Everyone looks and sees Vivian flying out of the hideout on her Para-mail as it smashed through a wall as she flies at them before she changes it into its Destroyer Mode.

Her Para-mail was heavily damaged and was missing it's right arm, but it was still able to fight.

Vivian then fired at the Elementals which made them dodge her gunfire as they jumped away.

They then saw Van, Katsumi, and Alektra flying out of their hideout with their own machine.

Van was riding on Tusk's Para-mail.

Katsumi was in her mother's Hekiryugo which was also damaged and had Soryugo's left arm, right wing, and both legs in place of it's missing body parts.

Alektra was riding on her mother's Cleopatra as they all charged at the Four Elementals and fired at them, and the Earth Elemental blocked their shots by creating a large earth wall to defend himself and his allies from harm.

Everyone changes into their machines' Destroyer Modes as Vivian armed herself with her boomerang.

"Alektra, you go help Sei! We'll handle the Elementals!" Vivian told her.

"Yes ma'am!" Alektra said as she uses Cleopatra's teleporting abilities to teleport to Seiryuu.

"Alright everyone, let's go!" Vivian said.

"Right!" Van and Katsumi fired at the Elementals using their guns, and they dodge their attacks.

Vivian then throws her boomerang at the Elementals but the Earth Elemental easily stops her weapon as he catches it in his hand.

"Annoying vermin!" The Earth Elemental said as he throws the boomerang to the ground, and sends large rocks at the charging Vivian in her Para-mail.

"Vivian, no!" Seiryuu shouted as the rocks smashed all around Vivian's Para-mail.

Vivian managed to dodge most of them but a few managed to hit on her and destroy some parts of her Para-mail before other larger rocks began to surround her and smashed all around her to crush her to death before her machine exploded.

Seiryuu's eyes widened as Vivian was like a mentor and older sister to him.

"No…" He mutters in sadness at Vivian's death.

Alektra, Van, and Katsumi saw this as well but have no time to mourn as Alektra teleports her machine to Seiryuu's side before she jumps out of her machine and runs to the wounded Kamen Rider.

As Katsumi charges at the Elementals to attack them with her Hekiryugo's arm blade and while Van gives her covering fire with his rifle.

"Sei!" Alektra said as she brought his arm on her shoulder to help him stand. "Come on!"

Alektra then begins to help Seiryuu to the hideout, before they hear explosions which made them turn around as they saw Katsumi and Van's machines had fallen to the ground.

"Van...Katsumi…" Seiryuu mutters as he wanted to move in and help but was too injured to do so.

"Oh no…" Alektra mutters in worry as Katsumi and Van manage to stand back up.

"Alektra, go! You need to get Sei inside!" Katsumi told her.

"She's right! Go, while we'll hold them back!" Van told her.

"What no...We can't just leave you…" Seiryuu mutters, but Alektra hardens her resolve as she continues to move to the hideout. "Alektra...what are you doing? Stop!"

As much as Seiryuu struggles to break free from her hold, Alektra tightens her grip on him as they continue to move forward.

Both Katsumi and Van smiled at them before they glared at the Elementals as they slowly approached them.

Katsumi roars as she charges the Elemental and Van fires at them.

Alektra had brought Seiryuu to the hotel as they headed to the backroom where the time machine was, as they heard explosions outside with gunfire.

"Alektra...stop...We can't abandon Van and Katsumi…" Seiryuu mutters, and Alektra looks down.

"I'm sorry, Sei, but this is something we agreed upon." Alektra told him and his eyes widened to hear that.

"Wait, you what?" Seiryuu gasped.

"Shortly after you've left, and before I head out. We agreed if the Elementals had found us, we'll sacrifice ourselves to buy you the time you need." Alektra told him.

"But how could you…?" Seiryuu asked and Alektra turned to him.

"Because we're not important. You are. You're the only one who can help your father, and change this damn future." Alektra told him.

"But...Alektra…" Seiryuu mutters.

Alektra and Seiryuu had arrived in the back room as Mei was still working on the time machine.

"Mei, they're almost here! Please tell me the machine is ready!" Alektra said.

"Don't worry I'm just about...there!" Mei said as she connected the last wire which created a large spark. Mei then grabs onto the large lever that will turn it on. "Please...let this work!"

Both the Villkiss and the Enryugo's eyes lit up a few times before they turned off much to Alektra and Mei's dismay as their eyes widened.

"What's going on? I thought you said this could work?!" Alektra asked.

"I don't understand. I did everything right. What isn't working?!" Mei shouted in despair as she slammed her fist on the time machine.

"Because it needs more than just power…" Seiryuu mutters as Alektra and Mei turn to the Kamen Rider as he removes his arm from Alektra's shoulder as he walks forward. "It needs the song."

(Cue: Towagatari ~El Ragna~)

Seiryuu then begins to sing the songs of both Salamandinay and Ange.

Kaze ni toban el ragna

Sadame to chigiri kawashite

Kaze ni yukan el ragna

Todorokishi tsubasa

Hajimari no hikari

Kirali... kirali

Owari no hikari

Lulala lila

Reacting to Seiryuu's song, both Villkiss and Enryugo eyes light up as they change to their gold color and their Space Time Cannons turn on as well as energy travels between the wires they were connected onto and to the time machine as a large tunnel of energy appeared in it.

(End of song)

"It worked!" Alektra said with a smile before they heard explosions outside.

"And not a moment too soon." Mei said as she picked up her rifle and turned to Alektra and Seiryuu. "You two go. I'll hold them off."

"What? But Mei you can't." Alektra said.

"Don't worry, it will be fine. It's an adult's duty to make sure you kids have a chance." Mei said as she headed outside as she opened the door and closed it behind her.

Alektra was saddened to see her leave but hardened her resolve as she walked to Seiryuu and placed his arm on her shoulders again.

"Come on, Sei." Alektra said as she helped him walk to the portal.

When they were a few feet away they heard the explosions were getting closer to them.

"We're not gonna make it at this rate…" Seiryuu said.

"We may not, but you are." Alektra told him, which made Seiryuu turn to her.

"What?" Seiryuu said as they stopped in front of the portal.

"Remember Sei, I'm not important, you are. You're the best chance we have now in changing this world. Me, Van, Katsumi, Vivian, Mei, Maggie, and Dr. Gecko, we all put our trust in you. And I just know that you won't let us down." Alektra told him as she put the cure in Seiryuu's hand.

"But...Alektra…" Seiryuu mutters before Alektra leans and kisses on his mouth guard where his lips were supposed to be, and his eyes widened in shock before she pushed him into the time portal as he was being sucked in by the force of its vortex.

"No, Alektra!" Seiryuu tries to break free as he reaches out to her but is still being pulled in as the energy begins to surround him.

Alektra simply smiles at him before an explosion appears behind her and she is quickly engulfed by the flames, and Seiryuu's eyes widened as he cries out her name.

"Alektra!"

Then the energy of the time vortex completely engulfed Seiryuu as everything turned white around him.

To be continued…

There you have it, I hope that you like it. Please review to tell me what you think.

Also special thanks to my good friend bloodredrose for the idea of Kamen Rider Seiryuu.

Also here's a small note of Sei and Seiryuu.

NOTE;

Sei's name is shortened from Seiryuu, the Azure Dragon.

Heiryu means 'Warrior Dragon'

NOTE: Hei (兵) means 'Warrior' with Ryu means 'dragon'