Disclaimer: I don't own Kuromukuro or Kamen Rider and they belong to their respected owners.
Kennosuke drags his Engine Blade to the concrete floor scratching it, he confronts the Dopant. He lifted the Engine Blade with all his might till he stabbed his sword to the concrete floor in front of him.
"Let me show you the new ultimate power I have received," Kennosuke told the Dopant.
Kennosuke immediately got out the Accel Driver, it looked like a set of motorcycle handlebars with a slot in the middle before placing it on his waist.
"Kaa-san really let you use it," Yukina commented.
He then got out a red flash drive once again and pressed the button on it.
ACCEL!
"Hen… shin!" Kennosuke shouted before inserting the Gaia Memory into the Accel Driver before twisting the motorcycle handlebar.
ACCEL!
He revs up the handlebar a few more times till he stopped. Suddenly red light came out of his belt and formed a circle with red engine pistons around Kennosuke. Pieces of metal merged with his body and created his armor. It was mostly red and quite bulky too as silver paneling was on his legs. The torso armor seemed to resemble the grill of a car with black gears around his ankles. On his back was a large black wheel facing sideways. His helmet was also red with a metal fin on the top. His visor was dark blue with the metal letter A in the center. This is Kamen Rider Accel.
Accel forcefully and easily pulls out the Engine Blade from the ground.
"What do the modern people say… that's right, saa, furikiru ze!" Accel charged forward with no hesitation started slashing the Ice Age Dopant.
Accel gave his swings full force and swung his blade slashing the Dopant's chest giving him no chance to attack. When the Dopant got enough room, he released his ice powers and froze Accel in his place.
"Heh, listen to yourself fall apart." The Dopant mocked not noticing Accel's hand reaching for his Driver's handlebar.
The Dopant charged forward an inch before attacking Accel, the latter twisted the handlebar releasing the heat from his armor and melting the ice as well.
"Amazing, so it can do this as well," Accel commented.
Accel then opens up his Engine Blade before entering a different Gaia Memory, the Engine Memory.
ENGINE!
He closes the blade's slot as his body begins to heat up as well as his sword letting out a minimal heatwave.
The Ice Age Dopant charged forward at Accel but the latter gave a strong swing with his Engine Blade making the Dopant scuffle back. The Dopant charged again, but only to be pushed to the ground by another swing. The Dopant slowly backed up as Accel gave him another slash.
The Dopant growled before icing the floor and skated away.
"You're not getting away that easily," Accel says.
Accel proceeds to remove the Accel Driver from his waist before doing a flipped into the air as the wheel on his back begins to change location and once Accel landed he became into his Bike Form.
Accel begins to follow the Ice Age Dopant with full speed. Once Accel got close the Dopant was shocked that the Rider was right behind him. The Ice Age Dopant did all he could to escape Accel but nothing stopped the Kamen Rider from losing his enemy. Accel finally caught up to the Dopant across the river and landed in front of the Dopant, Accel then fired his engines in front of the Dopant making him scatter back.
Accel reverts back to Rider mode and revs the right lever of his Driver to activate his finisher.
ACCEL MAXIMUM DRIVE!
After charging up to a point when Accel is engulfed in orange flames, he executes a jumping spinning heel kick.
"Despair was your goal," Accel says.
The Dopant screamed as he shattered into ice cubes.
"Did he beat? He won?!" Koharu asked out loud.
Accel looks down at the ice cubes on the floors.
"A cowardly escape." Accel changed back to Bike Mode and chased after the Ice Age Dopant once again.
Luckily, the Dopant didn't run far as Accel easily caught up with him as he rammed himself to the Dopant making the monster crash across the floor.
Accel returned into Rider mode and started attacking the Dopant with his Engine Blade slashing his chest.
Ice Age Dopant used the water behind him to attack Accel, while the latter entered the Engine Gaia Memory into his blade.
ENGINE!
He pressed his sword's trigger.
STEAM!
The Dopant fired icicles at Accel but the red Rider created a power heated stream from the Engine Blade melting the icicles. Accel charged forward and pressed the blade's trigger again.
ELECTRIC!
Engine Blade was covered in electricity as Accel slashed the Dopant sending the monster into the air.
ENGINE MAXIMUM DRIVE!
Accel visor glowed as he jabs his sword to the falling Dopant, as his blade concentrates energy in the shape of the letter 'A' hitting the Dopant.
The Dopant fell to the floor before he got back up and screamed then exploded as Accel de-henshin back to Kennosuke.
AN: I saw a clip of this anime on youtube and thought Ken looks like he would become Kamen Rider Accel.