Karin started to asses Kenpachi carefully, judging his every move. How he walked and how long his footsteps were, Karin knew that this kind of information was crucial. The smallest details could mean life of death. She would defiantly have to go into Bankai mode to fight a captain but she didn't want to play her ace at the start. She would wait and catch him by surprise. Her Bankai and Shikai thankfully gave her a lot to work with.

The Head Captain stood up and told them to prepare themselves. Kenpachi drew his long sword it had jagged shark teeth and was straight as an arrow. The sword tip reflected how sharp it was in the light coming from who knows where. Karin drew a breath and fell into her fighting stance. Ikkaku had been taken off the field to get his wounds tended. Or so Karin guessed. She knew he wasn't that badly injured she hadn't wanted to kill him. Kisuke had always stressed to her if she was going to swing her sword then aim to kill or don't swing it at all. It was true Karin had held back against Ikkaku but she could not risk that with Kenpachi. He would kill her if she hesitated.

She focused solely on Kenpachi, Karin heard the Head Captain call out the command to start the fight. Kenpachi attacked right away with deadly speed and accuracy. Kenpachi was known to have a ridiculous amount of spiritual pressure and it showed in every powerful swing of his blade. Karin used both her swords to block him not sure if one would be enough. Their swords clashed together with a power boom. Their spiritual pressure clashed and fought against one another then rebounded forcing both of them to back up a step. Kenpachi was relentless in his attacks; he just kept coming and coming; slamming his sword down on both of Karin's'. Karin knew that if she stayed in defence she was going to lose so she switched to offence.

When his next blow came from above due to his height, Karin used her own height as an advantage and dodged to the left as Kenpachi was in mid-swing. Karin slammed her own swords on top of his adding to the power and pushing them down with great force carrying Kenpachi with it. He stumbled forward and Karin used his distraction to bring her sword down aiming for his side. Her sword touched flesh and she sliced her sword over his back and…nothing happened. Not even a scratch. What the hell? Karin had known that Kenpachi could have dodged that attack, he was a captain after all and she had been puzzled by it at first but now it made perfect sense. He knew her attack would do nothing. What was she supposed to do if she couldn't wound him? Maybe she could make him laugh himself to death?

Kenpachi stood slowly with arrogant grace.

"Disappointing, can't you do any better?' he sounded genuinely annoyed.

"Then again your brother was like you at first so maybe you just need to warm up a bit."

He attacked again but not head on, he swiped low at her midriff. Karin twirled out of the way but one of his huge hands was ready for her and grabbed her around the throat. Karin knew she couldn't cut him so she focused intently and one of her swords dissolved and appeared back in its sheath at her back. Then she used her free hand to dig into a pressure point at his wrist which made him drop her reflexively just as his sword was coming down over her head. Karin rolled out of his reach. That was a close one. Too close. She was going to have to activate her Bankai; she couldn't risk another incident like that. He nearly had her. Kenpachi circled her lazily.

"Come one little girl do your best." He taunted. He stopped coming closer when he saw that she wasn't looking at him but off into space in intense concentration.

"What are-" Kenpachi stopped talking when spiritual pressure began to swirl around her gathering energy and speed.

"What on earth?" Frowned Ukitake.

"Don't tell me she knows…" Began Hiroko but trailed of in amazement.

"Bankai" Finished Kensei.

"To have been a soul reaper for such a short time and have so much skill as well as a Bankai is…unheard of." Shunsui said his interest spiking.

"Karin…" Whispered Toshiro in awe. More spiritual pressure was gathering around her body and it was at least at a captain's level. Kenpachi had to back away the spiritual pressure was so thick with power it pushed at him. Hell, Toshiro could feel it from where he sat.

Karin was facing in Toshiro's general direction, her head was down and her eyes were closed now. She lifted her two swords in the air in front of her hilt to hilt. Toshiro realised that the spirals on the hilts of her swords had opened up to made little slitted crevices. The bottom of the hilt of one of the swords was gone. Spiritual pressure began to gather around the swords and Karin slipped the hilt of the swords into one another. There was a click that echoed in the star struck room. The spirals of the two swords now inter joined lit up like a light bulb. Then like lava rolling down a hill the light began to spread up her swords revealing complicated patterns which now glowed. Her spiritual pressure intensified and when the light reached the top of her swords her head snapped up to look straight into Toshiro's eyes and she whispered,

"Bankai."

There was a blinding white light that made everybody reflexively close their eyes. The spiritual pressure that was released had the effect of standing at a cliff top on a windy day. When the light faded and everybody could see they saw Kenpachi, his sword dug into the ground and he was still slightly skidding backward due to the force of spiritual pressure. The spiritual pressure seemed to rush back into Karin making them able to see her again. Everyone gaped at the change. Even Byakuya's intake of breath could be heard. Mayuri's eyes widened in fascination and interest,

"How curious…" He muttered to himself.

The Head Captains theory in if she was The Chosen One got more absolute. Shunsui's eyes widened and he raised an eyebrow at Ukitake whose mouth was slightly open in amazement.

"I have never seen anything like that." Kensei said to Hirako.

"Indeed" He replied leaning in to get a better look.

"Now that's what I'm talking about!" Kenpachi's gleeful exclamation echoed around the cave.

Karin was breathing heavy from the excursion of changing into her Bankai state. Her new outfit was the blackest black that went down to her ankles. It had a silk dark purple stripe under her breasts and around her waist and the jagged edges of her gown were also lined with purple as well, it looked like purple flames up her gown. It had buttons down the front of the same pure white crystal that was around her neck. Kisuke had used a button on her gown to make the necklace. The outfit was light and flexible. Her feet were encased in shoes that had a retractable blade in the sole. Her gloves had a special grip that quadrupled her strength.

Her sword was also pure black; the colour reminded Karin of coal. The swords guard was square with two new moon shaped blacks going around the guard. The hilt was it the middle and extended out wards and had the same white crystals on her gown. It acted like a small blade similar to the one on her other two swords. It also acted a long distance weapon. It could throw deadly throwing stars. There were different types of stars varying in size and power. Her main blade was also shaped like a new moon, one side of the blades tip was facing up and the other side faced down. Despite the large and heavy sword it was light in her grip with her special gloves on. Her breathing slowed and her heart clamed.

Karin twirled her sword around testing its' weight. It made a high pitched whirring sound as it sliced through the air with deadly precision. Kenpachi smiled like a child that been given the moon.

"Nightshade?" Asked Karin confidently to her Zanpakuto in her head. He answered immediately.

"Don't worry baby I won't let you get hurt by this asshole."

"I know. Ready?" Karin said affectionately. She had gotten particularly attached to her Zanpakuto. Her partner in crime. Her protector. Her friend and most of the time a second overprotective brother.

They worked fanatically as a team each knowing what the other was about to do so they could help, they were two minds of one purpose, to take down their opponent. Kenpachi came charging at them sword high.

"Triple stinging blades!" Karin said to Nightshade and immediately three throwing stars flew out of the slit in the guard's sharp blade.

"Good idea." Nightshade praised.

Kenpachi didn't even try to dodge them. They were just little stars they wouldn't do any damage, it didn't have enough power to even cut him. The stars hit his flesh and he felt the power ripple over his skin as a wave of spiritual power from the throwing stars as they got closer. It was like nothing he had ever felt it was three times as powerful as her other two swords she had had. They pierced his flesh with stunning ease and Kenpachi grunted at the heavy impact then grinned. This should be even more fun than he had expected. Pain was nothing new to Kenpachi and it didn't stop him from flicking his wrist and removing the small stars that she had planted in his chest. He kept his pace as he charged at her, bringing his sword down hard. She brought one edge of her sword up and caught Kenpachi's blade easily then with stunning easiness she flipped the other side of her sword up with such great force that Kenpachi's sword was ripped from his grip and went flying through the air and landed in the stone wall; It cut through the stone and it shook with vibrations of such force. Then twirling it back she held her deadly blade against Kenpachi's neck.

No one moved, no one blinked, no one even breathed as they realised that a child had just beaten Kenpachi their greatest fighter next to the Head Captain. Kenpachi through up his head and laughed, a full bellied laugh that rumbled through the room.

"You are so much stronger than I had ever guessed. Good, I won't have to hold back!" Kenpachi ripped off his eye patch. A wave of power blasted through the room.

Kenpachi had always worn the eye patch that would suppress his spiritual energy to make his fights more enjoyable and last longer. That was why he also wore the bells in his hair. The energy blast knocked the bells out and Kenpachi moved away from Karins' blade and in one great leap he was over where his sword was stuck in the rock wall. He ripped it out forcefully. Causing past of the rock wall the collapse ad crumble; the rock wall where the men in black cloaks covering their faces were sitting on a shelf just above. As fast as lightening they were gone and over the other side of the room. Kenpachi wondered who they were he had thought that this event was exclusive to captains. The Head Captain was keeping quiet about it. Not that Kenpachi cared that much he was just mildly curious why the Head Captain wasn't telling them who they were. Unless they could give him a good fight, then he might reconsider his interest. But for now he had a certain girl to fight.

Turning around with sword in hand, Kenpachi let his spiritual pressure settle. He was at his strongest. He came at her using his full strength; she matched his every stroke of his sword with amazing speed and skill. They slashed at each other for a good ten minutes. She matched everything that he through at her. He decided to take a different approach to her. Instead of coming at her with power he came at her with his finest skill. She was surprised at his sudden change in style but matched in seconds with her own unique style adapting to his style quickly and efficiently. He was more than impressed with her skill. But his admiration was nothing when she changed from defence to offence.

She ducked and swiped at his lower stomach. He knew that blow would kill him if he didn't dodge and fast. Both of them knew that the angle of her sword wouldn't allow him to block efficiently. That is what she planned on. Usually he would just take the blow but if she hit him it would kill him or serious wounded causing him loose the fight and he having too much fun to do that. Instead Kenpachi thrust himself backwards and dropped like dead weight, missing the blades by an inch. The sword sliced threw one of his spikes in his hair, cutting the tip off. Karen flipped her sword and went to slap him in the chest but Kenpachi rolled bring his sword up to block. Even though Karin's special gloves gave her tremendous strength she still struggled to push his sword away. So, instead she withdrew her sword suddenly Kenpachi's sword continued upward with the suddenly withdrawal of her sword giving her an opening. She brought the other side of her sword down in a diagonal stroke. Slicing his sword arm open as he blocked her sword, having no choice. The only reason why it didn't go straight through was the massive amount of spiritual energy he put in his arm and behind it, making it an almost impenetrable barrier.

Kenpachi thrust out his legs tripping her. She fell putting out her hands and flipping into a standing position. Learning how to fall had been one of the first things Kisuke had taught Karin.

"It's about time." Nightshade warned

"Just in time too. If it went on any longer we would have had to kill him. I don't want to have to tell Itachi I killed one of his friends no matter how-"

"Stark raving nuts he is" Finished Nightshade.

"He's not crazy, just enthusiastic." Karin said a little hesitantly.

"He's coo coo" Said Nightshade bluntly.

"Oh be quiet." Karin snapped playfully.

Kenpachi stood up and rubbed his chest it was starting to feel strange. His neck felt tight, his stomach was tightening to the point of pain. His smile slipped. What was going on, he felt dizzy and his eyes had got blurry. His strength was leaving him rapidly. Unnaturally.

Karin stepped back as Kenpachi fell to his knees, coughing and grabbing at his stomach.

"What did you do to me?" Gasped Kenpachi.

"My triple stinging blades have slow acting poison painted on the tip." Karin said in a low voice only he could hear. She didn't want the whole room to know her little trick.

"That's cheating!" Cursed Kenpachi.

"Hey didn't you say anything goes? Besides it's another power of my Zanpakuto so it's not really cheating." Karin informed him. Karin expected to be made but he was the opposite. He laughed,

"Who would have thought, a little girl would kill me?"

"It's not going to kill you just make you black out for a few hours."

He didn't seem relieved that his life was going to be spared, he just chuckled,

"Good, then I have the chance to fight you again. I haven't had such a treat for a long time. Since your brother actually. It gives me something to achieve. I hate being bored…"

With that he fell unconscious falling back creating a puff of dust as he hit the floor. The room was so quiet you could hear a pin drop. Karin turned to face the faces staring at her with awe and amazement.

"She just beat a captain. What is she, fourteen?" Kensei whispered to Hiroko.

"Fifteen." Corrected Toshiro.

This is even better than the Head Captain thought and for the first time in a long time he felt like chuckling. The youth of today never ceased to amaze the Head Captain. Yamamoto stood and the whispering voices of wonder quieted. Karin turned and walked closer, as she walked whirling power covered her for a few seconds, when it lifted Karin's Bankai had gone. Her double edge sword, two swords again on her back. Her gown the normal soul reaper black outfit. However normal the Head Captain knew her not to be, he was certain now.

"You never did say what would happen if I completed the second round." Karin said to Head Captain.

"I never thought you would pass." Yamamoto said truthfully.

"Thanks for the vote of confidence. So?" Asked Karin.

"You get full marks. 20/20."

Karin beamed happy with herself. Adrenalin starting to take effect. Winning a battle always never ceased to make Karin feel that she was standing on the top of the world. The feeling was addictive. Karins drug of choice. Not that she went looking for a fight like Kenpachi.

"You have completed the first assessment there are three more to go. Mayuri, your next."