Disclaimer: I don't own KR Black own A:TLA! KR Black belongs to Toei and Ishinomori Shotaro, and A:TLA belongs to Nickelodean! I only the OCs and idea!

AN: This fic here was a story I was planning to write before the end of Avatar: The Last Airbender. At the same time, I was watching full episodes of Kamen Rider Black and I really, really liked the show (still do, to this day). Somehow, I decided to have this crossover between the two, and out came this, but I never really finished the first chapter. I've been working on the chapter for a few days and now I'm just showing you what I had. I hope you enjoy it!


Sokka sighed as he walked down the streets of Ba Sing Sei. A few weeks ago, the warrior from the Southern Water Tribe was a revered as a hero for his brains and skills in helping Avatar Aang stop Ozai's attack on Bai Sing Sei, and ending the war, once and for all. The GAang, as Sokka called it, were staying in Iroh's tea shop for a while, since they were tired from the war and wanted a chance to relax. Now, everything was peaceful and the bonds between the Four Elemental Nations were reforging after the century-long war, which was alright, save for one problem: they were bored.

Aang and Zuko were helping Iroh with the tea shop, Toph, while Katara, Mai, and Suki were doing girl things (but Mai was obviously the odd one out), leaving Sokka by himself. He tried to find way of passing the time, figuring out some plans for the future, trying to help out at the tea shop (which for some reason caused a cup full of tea to spill all over Sokka), and heck-he even tried to hang out with Momo and Appa (no offense to the said creatures of the Avatar).

In the end, Sokka decided to take a walk around Ba Sing Sei, expecting some excitement in the city, since he took part in the war. Unfortunately for him, he received no praises from the people, like the Avatar did. 'You think after saving the world, we would be seen as heroes where ever we go, but no-it's back to normal life!,' Sokka thought to himself as he rolled his eyes.

Apparently the Water Tribe Warrior was too deep in his thoughts that he failed to noticed he collided into a figure, sending him flat on the ground. Sokka rubbed his head with one hand while he used the other to help himself up. He looked down to see he bumped into a teenager who was on the ground as well. "I'm so sorry," Sokka quickly apologized as he quickly ran over to him. "Are you alright?"

The teen put an assured hand in front of Sokka as he said, "Don't worry about." The teen then stood up before dusting his clothes. "I've had worse."

It was then Sokka got a good look of the teen. The teenager was about Zuko's age, sixteen or seventeen, with messy brown hair that had a couple bangs over his blue eyes. He wore a brown cloak over his red shirt and pants. From the fairness of his skin and the color of his shirt and pants, Sokka could tell this guy was from the Fire Nation. "You're from the Fire Nation?" Sokka pointed at the teen, who nodded. "What's someone like you doing here?"

"I could say the same about you," the teen retorted. "It's not usual for someone from the Water Tribe to be here."

Sokka just gaped at this guy. He didn't know about his participation in bringing down the Fire Lord and stopping the war? But that was impossible. Still, Sokka ignored it as he placed a hand on his chest, proudly boasting "Well, if you haven't noticed, I've been traveling around with the Avatar!"

"Really?" the teen asked with curiosity.

"Really!" Sokka responded, somewhat childish of him. "In fact, I've helped him stop Ozai from destroying Ba Sing Sei!"

"Well, why don't you tell me about it on the way to the market?" the teen offered. "I was just about to head there."

Sokka looked at the teen with glee. He finally had someone who he could to! "Sure!" Sokka grinned.

"Great then," the teen smirked before extending his hand to Sokka. "Name's Rai by the way,"

Sokka accepted the hand and shook it. "Sokka."

"So Sokka, tell me about your adventures," the teen, now identified as Rai, said as he walked with Sokka.

The Water Tribe teen slung his arm on Rai's shoulder. "Well, there was this one time we were captured by pirates," he began as the two walked off into the streets of Ba Sing Sei.


While Sokka talked with his new friend, Aang was at the Jasmine Dragon, Iroh's tea shop, helping the Dragon of the West and his nephew clean up at the shop. The store was closed, allowing the trio to have time to clean up the shop and have it ready by tomorrow. Once they were done, Aang and Zuko sat at one of the tables, while Iroh got the tea.

"Well, that was a long day!" Zuko said as he stretched his arms.

"Yes," Iroh agreed as he came in with three cups of tea. "I have never seen so many customers in one day!"

"It's no surprise Uncle," Zuko smiled as he looked at Iroh. "Not only does this shop have great tea, but the customers have the Avatar, the Fire lord, and the Dragon of the West serving them."

Iroh couldn't help but let out a chuckle as he placed the tea cups on the table. "That is true my nephew."

Zuko turned to looked at Aang, who happened to be sitting across from him. Aang had a hand on his forehead and his face cringed up, which almost looked like he was in pain. "Aang, are you alright?" the newly appointed Fire Lord asked his friend.

The Avatar looked up at Zuko. "I'm fine," he replied, giving Zuko and Iroh an assured smile. "Just a little headache, that's all."

"Are you sure?" Iroh asked Aang.

Before Aang could answer, he suddenly felt a jolt of pain run up his spine as he suddenly stood up, knocking his chair to the ground. "GAAAH!" Aang screamed in pain as he grabbed his head.

Zuko's and Iroh's eyes widen in horror as they saw Aang in this state. "Aang, what is it?" Zuko called out as he and his uncle ran over to him.

The two, however, stopped as white energy shot out of his eyes and mouth. To the two Firebenders, it was somewhat similar to his Avatar State, but this time, it seemed like something was taking control of Aang. "Uncle, do you know what this is?" Zuko turned to his uncle.

Iroh shook his head. "I've never seen anything like this!"

Before either one could contemplate what was going on, a burst of energy shot out of Aang's body, knocking everything in the room (including Zuko and Iroh) to the ground. Once the wave of energy died down, Zuko and Iroh raised their heads to see Aang standing in the center of the shop, his back facing the two Firebenders. Zuko immediately got up and ran towards Aang. "Aang, are you alright?" Zuko asked as he placed a hand on Aang's arm.

The Avatar turned to face Zuko, who was shocked at what he was seeing. Instead of his normal eyes, Aang's eyes were covered in a murky, white energy, but it wasn't the Avatar State. "Unhand me, mortal!" Aang shouted, ripping his arm away from Zuko's grasp.

Zuko and Iroh were taken aback by the Avatar's behavior, while Aang paid no attention to them as he ran out of the Jasmine Dragon. Iroh immediately ran after him up to the entrance. "AANG!" Iroh called but it fell on deaf ears as the Avatar ran off into the city.

"Uncle, what's with Aang?" Zuko asked.

"I don't know, but the others will have to know," Iroh stated. "I'll get the others, while you follow the Avatar!"

Zuko nodded as the two parted away immediately.


"... and then I came up with a plan to destroy the drill from the inside!" Sokka finished his latest story, swinging his arms wide open to excite the story.

Some time passed since Sokka met with Rai, and for what seemed to be like hours, Rai listened to Sokka's stories about his time with 'Aang'. Even when they arrived at the market, Sokka still continued to narrate his stories, but Rai was quite interested in these tales. In fact, there wasn't even a time where Rai interrupted Sokka once.

Rai looked impressed as he listened to Sokka' story. "Seems like you should have deserved the credit."

"That's true, but with the Avatar, my plans would have never worked. He needed me as much as I needed him," Sokka confessed.

"Showing modesty after all of that boasting?" Rai smiled. "I see why you're good friends with the Avatar."

Sokka simply shrugged as he decided to change the subject. "So Rai, what ya' doing in Ba Sing Sei?" Sokka asked.

"Just taking a rest," Rai answered. "I've been traveling around for quite a while."

Sokka nodded before he continue to walk straight ahead. He was going to ask Rai another question, but turned around to see Rai was behind, grabbing his stomach in pain. "Rai, are you alright?" Sokka asked as he ran towards him.

Before Rai could answer, he immediately pushed Sokka into a nearby stand, while he turned around to see a white beam heading towards him. However, it was too late to dodge as the beam had torn into Rai's stomach, blasting him clear into the wall. Everyone immediately ran for their lives as the sight of this, while Sokka's eyes widen at this horror and turned around to see who was responsible. "Aang!" the Water Tribe boy exclaimed.

It was Aang, who walked down the streets of the market place.. However, there was something strange about the Avatar. For one, he had a strange, murky white aura that erupted from his body. 'Something isn't right here,' Sokka thought to himself.

Something was indeed wrong as Aang had stopped and without looking, fired a beam of white energy from his hand. The blast hit the nearest wall, causing it to explode. Chucks of earth flew into the air and struck the nearby civilians. "Aang, what are you doing?" Sokka shouted.

'Aang' just ignored him as he continued to fire white energy blasts at the civilians. "Aang stop it!" Sokka heard a familiar voice shout from behind.

The Water Tribe Warrior turned around and his eyes widen as he saw a familiar figure running towards him. "Zuko!" he shouted. "Aang's gone insane!"

Zuko stopped right in front of Sokka and took a stance. "Get everyone out of here! I'll take hold him off!" he called out before charging at 'Aang'.

'Aang' just turned around to see himself faced by Zuko. 'Aang' grinned at this, making the Firebender shiver. This grin equally matched Ozai's own. It showed evil and raw pure power... just from a simple grin. "I haven't felt this kind of power in a long time. This should be fun," was what came out of his mouth.

Immediately, Zuko launched a ball of fired from his fist at 'Aang' before kicking another one into the air. To much of Zuko's surprise, 'Aang' who simply dodged it as he charged at the Fire Lord. Before Zuko had the chance to use another fire blast, 'Aang' quickly punched Zuko in the stomach before giving him roundhouse to the face, knocking the Fire Lord on his back. 'Aang' placed his foot on top of Zuko's chest, keeping his there. "This is the end for you," 'Aang' stated, raising his hand that was covered in white energy.

"LUNAR!" a voice shouted.

'Aang' turned to the person who shouted that name to find a blast of red energy coming at him. The blast struck him at the stomach, sending him crashing into the ground a few yards away from Zuko. "Aang!" Sokka shouted as he was about to run to him.

However, he felt a hand on his shoulder, stopping him from reaching the Avatar. "That's not Aang, Sokka," Sokka heard a familiar voice told him.

Sokka turned around to see Rai, much to his shock. It was then he noticed smoke arising from Rai's stomach. "Hey, you alright!" Sokka asked with concern. "I thought you were dead!"

"I'm tougher than I look," Rai responded as he stood in front of Sokka.

The group watched 'Aang' stood up, glaring at Rai as he looked at 'Aang'. "Lunar," he said.

'Aang' glowing eyes glared at Rai's eyes. "Solar," 'Aang' spoke, hatred dripping form his mouth.

"I thought you were finally sealed the last time we fought," Rai said.

"No matter how many times you will put me down Solar, I will always come back," 'Aang' spoke. Suddenly, his hands began to glow white."And this time I will reclaim my throne!"

After saying that, 'Aang' raised his both hands and had unleashed two balls made of white energy, and were headed at Rai. Rai did move out of the way. He was able to dodge the first beam that came at him. However, it was impossible to dodge the second one. "Rai!" Sokka shouted.

Then, the impossible had happened. Rai caught the energy ball with both of his hands, before he slammed it into the ground. Gray smoke erupted from the ground. Once it cleared, there stood Rai. "I defeated you once, I can do it again," Rai stated, taking a stance.

Zuko's eyes widen recognizing the stance. It was a Sun Warrior stance! Zuko's eyes trailed onto Rai. Did this teenager knew about the Sun Warriors and if he did, how was that possible? Iroh was the last outsider to learn from the Firebending masters Ran and Shao, the dragons.

Unlike Zuko, 'Aang' was not impressed by Rai's stance as he simply let out an evil chuckled. "Do you really think you can win against me?" he questioned.

Rai thought about it. Could he do it? He did the last time, but can he do it again? "No," he dropped his stance. "Not like this."

'Aang' grinned. Rai curled his hands into fists, bringing them down to his sides, and 'Aang' copied his movement. Suddenly, in a flash of red and green colors, identical belts appeared around their waists. Both were black with pads on the sides a silver buckle that had a gem in the middle; red for Rai and green for 'Aang.' Rai crossed his arms into an 'X' in front of him. 'Aang' placed right his arm in front, while placing his left hand over his buckle. Aang and Rai slammed their hands on the pads. "Henshin!" both shouted as 'Aang' was bathed in green, while Rai was covered in red.

'Aang' wore silver armor over his black bodysuit. He had silver gauntlets and boots on his arms and legs. He had a silver chest plate that had the symbol of the moon. His silver round helmet had metal antennae protruding from in between the green round eyes and had a black mouth guard. "Century King Lunar!", 'Aang' announced.

Rai now wore jet black armor over his dull gray bodysuit. He had black gauntlets and boots with a red symbol of the sun on them. He had a black chest plate with the same symbol. His black helmet had a silver mouth guard and antennae protruding from between his red eyes. "Century King Solar!" Rai announced.

The two warriors, Solar and Lunar, stood there, eyes glaring at each other, while Zuko, Sokka, and some other civilians watched with anticipation and curiosity. "This time, only one of us will survive," Lunar firmly stated, curling his hands into fists.

"We'll see about that, Lunar," Solar stated.

With that, the two armored warriors charged towards each other, their fists cocked back and screaming their battle cries.

Unknown to everyone else, a lone figure sat on the rooftop of a nearby building, watching what was happening. The figure wore a black cloak over his body, and a hood over his head. Everything about this figure's features were hidden, save for a black-gloved hand, and brown trimmed beard. In his hand was a Pai Sho tile. "And so it begins," he said as he tossed the Pai Sho tile into the air.

As the Pai Sho tile flipped into the air, one could see a black lotus etched into it.


AN: That's all I have. I hope you enjoyed it! Please leave a review to state you comments on the idea, and if you have any criticism, then please let it be constructive!

Also, this idea is available to other authors, so you can adopt the story, if you want to. I'm sorry if this story does seemed rushed, but you can change it to you liking, if you want to. Just send my a PM or leave a review stating you want to adopt the fic and work on it, and we can discuss it from there.

Raika out!

PS: I hope Avatar: Legend of Korra will be as good as A:TLA!