Kamen Rider Decade X Kamen Rider Dragon Knight

By: Phinal Phantasy

Chapter 10—A Trip to the Dark Side

(A/N: Well, it's been way too long since I updated this fic, but if you will continue to be patient, I'll keep updating, however infrequently, until this story has a wonderful conclusion. For now, I hope this new chapter meets with expectations. Please leave me your reviews to let me know what you think.)

(Disclaimer: I don't own Kamen Rider Decade or Kamen Rider Dragon Knight. I'm just having fun with them.)

Bold Italics = Advent Deck

Kit's eyes were wide when this darker doppelganger of his Rider form charged him. He barely dodged out of the way from Ryuga's punch, but when he got back up, the evil Rider drove his knee into Kit's gut, then backhanded him, sending him to the rocky ground nearby.

"I won't go easy on you…better henshin," Ryuga said before drawing an Advent Card and activating it.

"Strike Vent!" A weapon resembling Dragblacker's head appeared on Ryuga's arm and he thrust it forward, black fire spewing forth.

"Whoa!" Kit panicked and barely ducked and rolled, though his shirt got singed by the flames. He quickly removed it and then ran away from Ryuga, but kept his Advent Deck pointed outwards.

"You'll never get stronger at this rate," Ryuga criticized, "If you want to truly be a Rider, FIGHT!" he shouted then used his Strike Vent to send another stream of black fire towards his opponent.

"Kamen Rider!" Kit called out loudly, inserting his Advent Deck into its belt. The energy sphere created by the henshin protected him from the flames as his armor formed around him. When the black flames cleared, Dragon Knight emerged from them, untouched by the heat and he drew out another card as Ryuga's fire attack came at him again.

"Guard Vent!" The shields resembling Dragredder's legs appeared in front of him and Dragon Knight grabbed them just in time for it to protect him from Ryuga's attack.

"You're pretty fast with those Advent Cards," Ryuga noted, "But you still don't have what it takes to be a true Rider!" he said while activating another one of his cards.

"Sword Vent!" the sword resembling Dragblacker's tail appeared in Ryuga's hand, replacing Dragblacker's head and he charged at Dragon Knight who held his shields up together again to parry the strong blow Ryuga delivered with a war grunt. Ryuga bashed against Dragon Knight again, but it was a distraction as he tripped Dragon Knight for leaving his lower half unguarded, "You still don't get it!" Ryuga commented as Dragon Knight rolled, but his shields hindered him, allowing Ryuga to slash him several times across his back, "How have you stayed alive this long? What kind of Rider are you?"

"Not the kind that you are," Dragon Knight grunted, "Not the kind that beats his enemies when they're helpless!" He then threw one of his shields at Ryuga, who knocked it aside with his sword but Dragon Knight charged and bashed into him with his other shield, knocking him to the ground.

"Are you sure about that?" Narutaki called out, "I saw how you ended Axe. That was ruthless of you."

"I had no choice!" Dragon Knight protested, distracted by Narutaki's words enough to give Ryuga a chance to strike back with his sword, knocking Dragon Knight's shield out of his hand and the evil Rider followed through with a powerful roundhouse, sending Dragon Knight back to the ground with a grunt.

"And you think you have a choice now?" Ryuga taunted, "Do you think Xaviax and his Riders will give you a choice? That's your problem Kit Taylor…you're soft!" He kicked Dragon Knight again as he tried to get up, "You're a Rider!" he repeatedly attacked with each sentence he shouted, "You are at war!" slash, "Your enemies will show you no mercy!" slash, "You must be just as ruthless to come out on top!" Ryuga drove his point home with a strong kick to Dragon Knight's gut.

"I don't fight like that," Dragon Knight grunted, "I'm not the bad guy. I fight to PROTECT people!" he said activating one of his cards.

"Attack Vent!" Suddenly Dragredder descended from the sky and sent a blast of fire breath at Ryuga, forcing the Dark Rider back, but he had another card of his own ready.

"Advent!" Dragblacker arrived to combat Dragredder before the heroic Advent Beast could attack Ryuga further. The two dragons slashed and clawed at each other as Ryuga continued his verbal and physical assault, "How can you protect others if you can't protect yourself? You fight too defensively! You must go on the offensive if you are to win!" he said.

"Sword Vent!" Dragon Knight's blade descended from the sky and he charged at Ryuga who parried just as Dragon Knight's sword connected with his own. They pushed against each other for a while, and then each backed off and did a powerful swing, causing sparks to fly as each of their chest plates were slashed while Dragblacker and Dragredder slashed at each other with their tails.

"I'll win but I'll do it my way!" Dragon Knight insisted, slashing at Ryuga

"Really? And how has that worked out so far?" Ryuga replied, blocking Dragon Knight's blow, "Your friends shun you, your enemies are still a threat, and your father is still in a coma. You won't be able to save him at this rate."

"Shut up about my father!" Dragon Knight replied, getting angrier, he slashed Ryuga, but when the Dark Rider blocked, Dragon Knight tripped his feet under him, making him fall to the ground, "You don't know anything about him!"

"I know enough. You failed to protect him because you refuse to do what is necessary. He is in the hospital…because…of…you!" Ryuga taunted.

"I said shut up!" Dragon Knight was enraged. He slashed at Ryuga as he got up and kicked him hard.

"You're only angry because you know I am right," Ryuga replied spinning his sword before countering Dragon Knight's attack, but the heroic Rider parried it successfully and backhanded Ryuga before kicking him hard in the gut, "And I'm right about your friends too. You are just a burden to them. They'd be better off without having to baby-sit you. So what are you going to do about it? Are you giving up?" Ryuga taunted as he got back up.

"I'm not the type to give up!" Dragon Knight said, parrying Ryuga's counter, "And I'm not a burden!"

"Really?" Narutaki asked, "How many times have you had to be saved by one of your fellow Riders? And how many times have you been able to return that favor?"

Dragon Knight hesitated as he pondered Narutaki's question, giving Ryuga another chance to strike, slashing the heroic Rider several times and then backhanded him.

"Figured it out yet?" Ryuga taunted as Dragon Knight laid on the ground, breathing heavily, Ryuga pointing his sword at him, "We're right about you. You can't be the hero if you're a nice guy; it just gets in the way. You become a burden to your allies and an easy target to your enemies and most importantly…you can't protect those important to you...especially your father!"

Dragon Knight continued to breathe hard, getting to his feet, glaring at the evil Rider and then, after letting out a long breath, he made an animalistic roar before charging at Ryuga who had his sword on the defensive as Dragon Knight slashed at the dark Rider over and over again. Ryuga blocked several blows, but the ones that made it through hurt him hard and eventually Dragon Knight disarmed him and then kicked him in the gut, sending him flying towards the edge of the cliffs.

"Guard Vent!" A pair of shields resembling Dragblacker's legs appeared in front of Ryuga who grabbed them just as Dragon Knight drew one more card.

"Final Vent!" Dragon Knight leapt up into the air and Dragredder circled him as the heroic Rider spun in midair to come down in a Rider Kick, Dragredder sending a blast of fire breath to boost his attack. Ryuga held up his Guard Vent to try to protect himself but the kick broke through and Ryuga was engulfed in flames as Dragon Knight jumped back for a landing, breathing heavily.

"Now…you see…how power…really works…" Ryuga said crawling from the fire, "Congratulations…on your victory…now…use my power…to take what is rightfully yours…" with those words, the dark Rider stood up and split into three silhouettes of himself that surrounded Dragon Knight and merged with him, turning his Advent Deck into a darker version of itself and a dark sphere surrounded him, making him into a Rider identical to Ryuga.

"Now you have the power of Darkness!" Narutaki declared, "You can destroy those in your way and prove your strength to those who doubted you! Make your father proud!" The new Rider looked back at Narutaki and nodded.

XXX

Decade threw a strong punch at Wing Knight who blocked it and countered with a low leg sweep catching the wandering Rider off guard allowing Wing Knight to follow through by elbowing him in the chest sending him to the ground to the applause of Kase, who had Tsukasa's camera and was taking snapshots for him of his match with Wing Knight.

"Not bad," Decade nodded, but kicked upwards from where he lay. The attack missed, but it did cause Wing Knight to back off giving Decade a chance to get back on his feet. Wing Knight came at him with a strong roundhouse, but Decade ducked and came back up with an uppercut connecting with Wing Knight's chin causing the Ventaran to stagger as Decade punched him in the chest. Wing Knight fell back but then blocked as Decade tried to knee him in the gut and pushed his opponent back and kicked him in the side.

"I can see how you gave Kase trouble earlier," Wing Knight commented as Decade got back on his feet., "I'm glad we're on the same side."

"Same here," Decade nodded his agreement.

"But I still owe you for giving my girlfriend a hard time!" Wing Knight joked, coming at Decade with a series of jabs forcing him to be on the defensive.

"Hey now, I can defend my own honor," Kase joked, taking a picture as Decade countered, the two Riders seemed to be evenly matched, "but I think I'll let you do it this one time."

Wing Knight nodded and delivered an uppercut to Decade's jaw and followed through with a strong kick while the Rider was in midair, sending him towards the fountain, but he tucked and rolled to avoid getting soaked, the moment perfectly caught on camera.

"Sorry, I won't be taking a bath yet," Decade joked, recovering, but breathing a little heavily as was Wing Knight who came at him.

"You sure about that?" Wing Knight asked jumping into the air to come at Decade with a flying kick. Decade jumped as well and their kicks connected midair, sending both of them to the ground panting before standing to their feet and simultaneously dehenshining.

"Great match Tsukasa," Len grinned and held his hand out.

"Yes it was, this has been a great experience," Tsukasa replied, shaking Len's hand. Kase approached them and handed Tsukasa his camera.

"So, who do you think is tougher between the two of us?" Kase grinned.

"To be honest, I'd have to say…as good as you are Len, Kase is just a bit better," Tsukasa replied, "The only reason I won against her earlier was because of the many abilities and forms I have at my disposal took her by surprise."

"Which won't happen again if we have a rematch," Kase grinned.

"Later," Tsukasa replied with a chuckle, "When we've had a chance to recover."

"I'm also starting to wonder about Kit. Hope he's cooled off," Len said.

"He's probably back at the hospital with his father," Kase replied.

"Let's go then," Tsukasa said and headed back to the fountain where he left his RideBooker, but noticed it was missing, "Where is it?" he said, looking around the fountain.

"Where's what?" Len asked.

"My RideBooker. I left it right here before our sparring," Tsukasa replied, bent over the fountain looking for it frantically.

"I was right around here the whole time," Kase replied, "I didn't see, or more importantly, sense, anyone else but us here."

"And the only ones who can come here are the Riders and the Mirror Monsters, either would've set off alarms in our minds," Len added, "This is not good if someone could enter Ventara without us knowing."

"If it wasn't anyone from this world then it would have to be…Kaitou! Damn that sneak thief!" Tsukasa punched the water in frustration.

"He's working for Xaviax now. He probably did this to get you out of his way," Len said.

"Well he'll have to do harder than that. I still have these and I'll still fight," Tsukasa said, holding up his DecaDriver and henshin card.

"I'm glad to hear that," Kase smiled, "After all it takes more than our cards to make us Riders. But still we should try to retrieve your deck as soon as possible."

"Are you looking for this?" the three Riders turned to the source of the voice and found Kaitou grinning at them, gesturing with Tsukasa's captured RideBooker.

"Kaitou! What the hell are you doing?" Tsukasa demanded.

"I thought that would be obvious. Your cute friend figured it out already. You want it back, better come after me," Kaitou smirked, twirling the RideBooker in his hand before running off, the heroic Riders in pursuit. Kaitou phased through the side of a parked car to get away from his pursuers. Tsukasa was the first to go after him. When Kase and Len approached the reflective surface, they were taken by surprise when the ringing in their minds went off and Kase was bum rushed in the side and then knocked into Len. Both fell and tumbled on the hard pavement.

"What the heck hit us?" Kase grunted.

"Let's find out," Len replied, getting to his feet and helping his lover to do the same. They both turned to see Kit glaring daggers at them.

"Kit? What the hell were you thinking?" Len said.

"I'm thinking…it's time for a rematch!" he said, drawing his Advent Deck and turned his gaze to Kase.

"Look Kit, I'm sorry that we picked on you and understand you want to redeem yourself, but now is not a good time. Tsukasa needs our help," Kase replied.

"I think you should worry more about yourself first!" Kit said holding out his deck.

"You're not serious?" Len asked as red electricity circled Kit's waist forming his belt.

"I'm dead serious," Kit replied.

"Go help Tsukasa," Kase told Len, drawing her own Advent Deck and holding it forward, white electricity circling her waist, "This won't take long," she returned Kit's glare.

"Oh, I think you'll want to stick around Len," Kit said, "You'll need to comfort your little girlfriend after I'm done with her."

"That's it Kit, you've crossed the line here!" Len said, drawing his own Advent Deck, dark blue electricity surrounded his waist.

"Kamen Rider!" the three Riders henshined in colored energy spheres, white for Kase, dark blue for Len, and red for Kit. When Wing Knight and Siren faced Dragon Knight he held out his hand in a "wait" gesture.

"Like Kase said, this won't take long," Dragon Knight said, "Time to show off my new moves….Hen…shin!" Suddenly three silhouettes that looked identical to his Rider form surrounded him and merged with him, then a black sphere surrounded Dragon Knight and turned his armor black, taking Wing Knight and Siren aback, "Meet Kamen Rider…Onyx!" the Dark Rider announced before charging against his friends.

(A/N: Well I hope everyone enjoyed this chapter. Reviews are always welcome. Next time, Kase and Len are fighting hard against Kit. Will this new Dark Rider overwhelm the heroes? And how will Tsukasa deal with Kaitou with the disadvantage of lacking his abilities?)