Disclaimer: I don't own Rakudai Kishi no Eiyuutan or Kamen Rider and they belong to their respected owners.

Ikki knew his brother Ouma wouldn't fall easily. They were tricked when Akatsuki used puppets to make it seem like Ikki and his fellow classmates defeated Akatsuki students. Now knowing they're strong and unpredictable, Ikki knew it was time to bring out his wild card, Jikokuken Kaiji, his Holy Sword.

"It's now or never," Ikki says as he summons his weapon.

JIKOKUKEN KAIJI!

"That sword… what is that?" Ouma questioned.

"Didn't you hear? It's my Holy Sword, the Sword of Time." Ikki says.

Ikki then takes out his Wonder Ride Book.

OCEAN HISTORY!

Ikki opens his book and lets out its story announcement.

Kono gunjou ni shizunda inochi ga ima o mo tsumugu kizama reta rekishi.

Ikki plugs the Ocean History Wonder Ride Book into his Jikokuken's slot before pulling the Kaiji Splitter, while turning the hand wielding the handle and the blade parts until it is vertical with each other (forming six O'clock) before inserting the Kaiji Edge on the Delete Hilt, changing it into the Kaiji Spear.

KAIJI GYAKUKAI!

Ikki then appears in a Library surrounded by waterfalls, with a giant projection of the Ocean History Wonder Ride Book behind him.

TOKI WA...TOKI WA...TOKI WA TOKI WA TOKI WA TOKI WA! WARENARI!

"Henshin!" Ikki then delivered a diagonal slash as a projection of a school of fish surrounding the user and forming the armor.

OCEAN HISTORY~!

The diagonal slash then forms the visor, finishing his transformation.

OCEAN BASSHĀN! BASSHĀN!

Ikki wore a bodysuit with the center of his torso and from his thighs to his ankles were black while the sides of his upper body were white. He had cyan half-circles on the center of his waist with a golden buckle on top of it with a holder on the left side of his belt. On his thighs were black armor with cyan markings on it and on his lower legs were armored with it being white on the inside while the outside was black divided by cyan outlines. His boots were white on the back and black on the front with a cyan oval on top of his boots. He had black armor on his torso cyan markings that look similar to a submarine's radar sonar. His shoulder pads were designed after a face of a whale with the top black, the bottom white, and a cyan line on top of it. His arms were black on the outside while the inside was white on the inside. There were cyan round markings on the side of his arms. His gloves were black while the back of the fingers was cyan. His helmet was black and white with a triton-style blade installed on the front of his helmet with cyan curved lines with the left side of the curved lines having gold points. He had four sets of magnets visors between the curved lines. He is the Toki no Kenshi, Kamen Rider Durendal.

"What is this…" The Akatsuki students are surprised to see the sudden transformation.

"You couldn't inform us with this." Rinna scolds Amane.

"I thought it would be a good surprise." Amane smiles.

"I am a Kamen Rider, Nii-san," Durendal told Ouma. "I have gained more power than you ever imagined."

"It is strange to see a swordsman wielding a triton," Reisen commented.

Durendal removed the triton from the Delete Hilt before pressing the Kaiji Trigger.

KAIJI MASSHOU!

Before anyone knew it a "water splash" formed around Durendal. Durendal was outside of time, he could see himself and his brother charging at him. Durendal could strike his brother now, but he had set his eyes on Amane. His Blazer, an ability similar to his but Durendal has mastered it making him the Time Swordsman.

Durendal walks behind Amane. The Time Swordsman inserted his weapon back again into its hilt before pressing the Kaiji Trigger.

SAI KAIJI!

Durendal then slashed Amane on his back, making the boy scream in pain.

"How?" Amane muttered.

"You predict the future, right? I can erase it and pick a better one." Durendal explained as charged towards his brother.

Ouma raised his ōdachi and blocked Durendal's Jikokuken. Durendal attacks over the top with Jikokuken but Ouma blocks it high horizontally with his own. Durendal steps in and with his lower hand on Jikokuken thrusts it to Ouma's ōdachi, sending it away from him. Durendal then turns a complete circle and slashes at Ouma's stomach, Ouma jumps back but only gets a small cut from Jikokuken.

"It seems you have gotten better," Ouma commented.

"If I hadn't I wouldn't be Durendal right now." Durendal remarked.

Ouma swung his ōdachi at Durendal, which the latter had blocked. Durendal can feel the full strength his brother was giving, Ouma knew he shouldn't take chances with the Kamen Rider.

Ouma and Durendal met and clashed their weapons as the clash made a shower of sparks, taking swings at one another. Ouma slashed wide to try and bisect his opponent only for Durendal to block the attack and then ran along the length of the sword to slash down the Ouma's open torso and kick it away. Snarling, the Ouma slashed wide again, launching a vacuum blade that cut through the air like a knife. Durendal ducked under the strike and charged for the Ouma again, their weapons clashing in another shower of sparks.

"Gah!" Durendal heard yelps and saw Shizuku and Stella being pushed back by Reisen.

"Girls!" Durendal cried out but his distraction Ouma slash his chest sending sparks and throwing Durendal back. "Got distracted there."

"Nii-san, Alice!" Shizuku cried out to him.

Durendal turns to see Reisein carrying Alice. Durendal then removed the triton from the Delete Hilt before pressing the Kaiji Trigger.

KAIJI MASSHOU!

Before anyone could do anything, a "water splash" formed around Durendal, and in a second Durendal was beside Shizuku and Stella while he gently placed Alice between them.

"A power like that would be a problem," Rinna says.

Durendal then proceeded to remove the triton and turned around before inserting the triton into the Delete Hilt.

TSURUGI KOKU!

With Jikokuken Kaiji now in sword mode, Durendal pointed his sword at his brother.

"Now, Nii-san let's fight each other as true swordsmen," Ikki says. "Now let's see if I really got stronger."

With that being told, Ouma attacked first, but his attacks were blocked by Durendal. The fierce expressions on their faces, (even with Ikki's face covered by a helmet), were serious. Their swordsmanship was amazing as if they almost danced with a playful pace to their blocking, dodging, charging, and slashing. They moved as gracefully as any master swordsman, but they also moved in sync with each other, which made their clashing of blades an art.

Durendal can see his Ouma ready to do a technique and powerful, well all of his techniques are powerful, but the Rider wasn't going to falter now.

Ouma imbues magic into Ryuuzume, amassing wind around its blade, devouring the atmosphere all around the immediate surrounding area; manifesting an enormous sword of storming slashing wind reaching fifty meters in height.

"Kusanagi!" Ouma shouted.

While Ouma announced his attack, Durendal then pressed the Kaiji Trigger activating his finisher.

OCEAN IKKOKU GIRI!

Durendal charges the Jikokuken Kaiji in its sword mode with cyan energy.

Ouma delivered the tornado at Durendal, as the latter delivered a dark blue energy slash. The dark blue energy slash made contact with the enormous tornado before it let out a huge explosion. The explosion created a firewall between Ouma and Durendal.

As the firewall died down, the two brothers stared at each other showing no emotion before charging at each other once again.

AN: I wanted to make Ikki into Geiz Revive but then I saw Durendal and thought how about this instead. I know somebody will say something about Durendal and Amane's abilities and how I might get it wrong. This story was collecting dust and needed to finish. Also, RIP TV-Nihon, I know a lot of people use that download for subs, and TV-Nihon had received a ceased and desist.