A.N.: This was commissioned by Anonymous.
Disclaimer: I don't own Bleach.
Warning: Lemon!

Kukaku's Special Training

Shortly after TYBW…
Rukon District; Shiba Residence

Walking through the grassy field, the beautiful Yoruichi Shihoin spotted the banner that marked her old friend's home. Looking around, she saw the woman's younger brother, Ganju, trying to tame a wild boar while the two helpers of Kukaku's, Koganehiko and Shiroganehiko, stood by watching. "Hey guys. Where's Kukaku?"

"Oh! Hello, Lady Yoruichi!" greeted the pair. The hulking men pointed towards the house. "Master Kukaku is inside. She's been giving Master Ganju extra training ever since he came back from the Soul King's Palace. She's in her room thinking of his next training session."

Yoruichi deadpanned. 'Probably because he didn't actually DO anything besides just be there…'

Ignoring the burly men and leaving Ganju to try and tame his new mount. Entering the building, the Flash Goddess headed downstairs until she reached the main bedroom of her busty friend, Kukaku Shiba. "Hitting the saké already, Kukaku?" asked Yoruichi, sliding open the door and finding the big-tittied woman sitting on a pile of cushions, a large black saké cup in hand.

"Hey, Ginjo told me a saying they had back in the World of the Living: It's always five o'clock somewhere!" grinned the fireworks expert. Grabbing a second cup, she poured some of her drink into it and handed it to Yoruichi. "You doing alright? I heard it got pretty dicey for all of you up there."

"I'm alright. Had to spend a few days bedridden while undergoing a detox treatment after we all got poisoned by that damn Quincy." Yoruichi bristled at the memory of being laid low by the D Sternritter, Askin Nak La Varr. Had it not been for Kisuke's Bankai and Neliel, we might not have made it."

"I see. Well, I'm sorry my good-for-nothing brother was of no help to you guys. After all I did to whip him into fighting shape, he ended up being a bump on a log. It was the Bount situation all over again…"

"It's fine. I'm not here to complain about Ganju. But funny how you mention whipping men into shape…"

"Oh? You want me to train someone else? Who?" Kukaku took a sip from her cup and raised an eyebrow. "You want me to train Ichigo or one of his friends?"

Yoruichi waved her hand dismissively. "No, none of that. Ichigo's strong enough and after all he and his friend have been through, they need some serious downtime. Besides, I highly doubt any training you give can compare to what Squad Zero gave him. No, the one who's in serious need of toughening up is my little brother, Yushiro."

"Ah, the runt." Kukaku poured herself more alcohol, tossing the empty bottle into a trashcan before reaching behind the cushions and pulling out another bottle of booze. "He ever put on any muscle since I last saw him?"

"No. He's still as he always was. Hell, even the Quincy we were fighting mistook him for a girl," laughed Yoruichi. "But I do feel like he needs to toughen up. Especially since he's going to be carrying the Shihoin Clan. It's hard for others to take him serious when they feel the urge to call him "Lady" and not "Lord". It's kinda embarrassing having to explain to everyone that he's my brother and not my sister."

"Yeah. I remember when I first met him. You remember?"

"Hah! You kept asking why he wasn't wearing a dress!" Yoruichi poured herself another drink and sat back on her cushion. "So, you think you can make a man out of my wimpy little brother? Or are you too busy training Ganju and the Fullbringers?"

Kukaku took a long drink of booze straight from the bottle, tossing it aside once it was empty. "Oh please. There's no amount of training that'd make Ganju into a worthy fighter. He was useless when I sent him to help you in the Seireitei, then he was useless during the Bount invasion and then he did absolutely nothing when I sent him with you to the Soul King's palace." Grabbing another bottle, she took a long swig before shaking her head. "Don't even know why I bothered with him. As for those other guys, they're okay but they don't look like they need any training. So yeah, I could use a new rookie to train. Go ahead and send him over. I'll put him through his paces."

"That's great to hear. I'm sure Yushiro will be glad for the extra training."

Later that evening…
Soul Society; Shihoin Manor

"You want me to WHAT?!" shrieked Yoruichi's younger brother. His jaw gaped when he heard the news that Yoruichi was sending him to Kukaku's for training. "Sis, you can't be serious!" Behind him, a servant stood over him changing his bandages. "Training?!"

"What? You should never slack off from training. And Kukaku's a pretty good teacher. She should be able to help toughen you up."

"Is this because that Quincy got me? I would have been able to kill him if I knew what his power was beforehand."

That comment earned Yushiro a bonk on the head. "You dummy! That Quincy told you how his powers worked and you still charged him like an idiot! We were lucky that we had an opponent that was chatty enough to explain his power and still you almost died." Yoruichi also wanted to blame him for her getting poisoned, since she'd been hit by Askin's Gift Ball trying to protect him, but she didn't want to rub it in any more than she had; the look on Yushiro's face told her she got her point across.

Dismissing the servant once his bandages were changed, Yushiro sighed and looked at his sister with wary eyes. "I'm all for training but…does it have to be Kukaku? Why can't I train with you?"

Yoruichi rolled her eyes. Yushiro always wanted to try to shift the burden of training onto her whenever the subject was brought up. "I still haven't fully recovered from being poisoned and I need to head back to the World of the Living to make sure Kisuke hasn't blown up the shop. Kukaku's a hard enough woman to give you the training you need without coddling you."

Knowing that there was no way to talk his sister out of it, the Shihoin Clan leader slumped and sat back in his chair. "Okay…but I can't train with her all the time. I have duties managing the clan since you never took back the position."

That comment earned him another bonk to the head, adding another lump on top of the one he was already nursing. "What's that supposed to mean? Don't act like I just up and left because I didn't like the job of Head of the Clan! The only reason why I didn't take back the position was because you had done a good enough job keeping the clan together while I was gone for the past century."

Yushiro was pleased to hear his sister's praise, despite the pain in his head. He knew that Yoruichi was only trying to look out for him and that she was pleased with how he stepped up to take her place as head of the clan.

"Don't worry. After a few training sessions with Kukaku, she'll have made a new man out of you."

The next day…
Shiba Residence

Yushiro walked up the grassy hill, spotting the busty Kukaku standing in front of the doorway to her home, her one arm on her hip while she watched the dark-skinned clan leader approach her. Reaching her, Yushiro bowed. He may have been the head of one of the Four Great Noble Clans but he knew it was proper form to show respect in someone else's house. "Lady Shiba. Thank you for agreeing to train me."

"No problem. I needed a distraction now that Ganju is indisposed and can't train anymore."

"Really? What happened?"

The busty woman shrugged, her enormous chest jiggling with just the slightest movement, making Yushiro blush while he tried not to stare. "The slacker broke his back while training. Of course, the idiot deserved it."

A shiver ran down Yushiro's spine. He didn't like where this was going. "He…hurt his back…training?"

"Yeah. Right now he's in bed with Koganehiko and Shiroganehiko watching over him. So then…" Her soft expression faded away and a cocky smirk spread across her face, driving fear into the young man's heart from the sight of it. "I hope you're ready for some serious training. Don't think I'm going to pamper to you just because you're Yoruichi's little brother or because you're the head of the Shihoin Clan."

The look Kukaku was giving him made Yushiro already start to break out in sweat. "I…I am not scared. Whatever training you have prepared, I can handle it!" he said, sticking out his thin chest in a poor attempt of masculinity.

Yushiro's bravado made Kukaku chuckle. "Oh really? Well I'll hold you to that. You don't really look like you can handle me, much less my training," she laughed, making Yushiro blush harder. "But I'll make a man out of you, one way or another."

Several days and training lessons later…

'I'm gonna die! I'm gonna die! Big Sis, you handed me over to a demon! Someone save me from this woman!'

Every bone in Yushiro's body was aching. He'd had plenty of teachers and trainers in the past. Many of them were former Seated Officers in the Thirteen Court Guard Squads or were talented fighters in the employ of the Shihoin Clan. Even Yoruichi had taught him a few things including how to use his fire-based Shunko. Yet Kukaku put them all to shame with her brutal training regimen.

Unlike his other teachers, who always kept his status as the future (and then later present) head of the Shihoin Clan as their reason for not trying to break the boy into pieces. Kukaku Shiba, on the other hand, showed that she did not care one iota about Yushiro's status. He was now her student and he would either break or get stronger.

Right now Yushiro felt he was on the breaking end of that dichotomy.

He groaned as Kukaku dragged him by the ankle back into the house, his body sore and his head covered in lumps. The past several days had been an endless slew of strength and spirit energy training. 'She's such a brute. If she were ever to become a Soul Reaper, I believe the men over at Squad Eleven would beg for a woman like her to join them…'

"Well, that was a good effort. You managed to dodge twelve of my cannonballs. That's better than yesterday when you could only dodge seven," complimented the dark-haired woman as she dragged Yushiro into her room to let him rest. Dumping the feminine boy on a pile of cushions, Kukaku grabbed a bottle of alcohol and took a long draught of it, her throat parched after a long day of working Yushiro like a dog.

'Yeah, but who'd consider dodging those spiritually charged cannonballs of yours as training?' Yushiro thought, giving a slight groan while stretching out on the cushions and relaxing. Kukaku sat behind his head, leaning back while chugging her booze. 'She drinks like a fish yet never seems to get drunk. Where's all that liquor going? Her breasts?' he wondered, staring up at her huge boobs. It'd been a hot day and the woman was covered in sweat. As a consequence, her huge melons gleamed in the soft lamplight of her room, catching the young man's eye.

Putting down her bottle, Kukaku looked down at Yushiro. "What? Don't think I'm sharing. You're here to train, not get drunk. You look like a featherweight who couldn't handle a single bottle. You wanna drink, wait until after you…" her voice trailed off when she noticed something.

Because of the way he lay on the floor looking up at Kukaku's tits, Yushiro had gotten hard, his erection pitching a tent in his black pants, getting the Shiba woman's attention. 'Well now, at least we know he likes girls. Hmm…for someone so scrawny, he looks kinda big…'

An idea popped into Kukaku's brain, a dirty idea fueled by all the saké she'd been drinking. Slowly a smile started to stretch across her lips. Suddenly training Yoruichi's wimpy little brother didn't seem like a waste of time after all. Besides, all work and no play made Kukaku a dull woman…

The bruised Yushiro opened his eyes to see Kukaku standing over him, smiling down on him. "So, you ready for the next phase of your training?" she asked. Yushiro said nothing, blushing as he looked up at her. With the woman's feet on both sides of his head, he could see up her skirt and see her panties. As much as he tried to fight the heat that began to build inside of him from the sight of her white panties.

"What…what kind of training?" Yushiro fearfully asked. He tried to sit up but Kukaku planted a foot on his chest, keeping him on the floor where she wanted him. "Sit ups?" His next attempt to sit up was just as futile, Kukaku's foot keeping him rooted to the floor.

"Ha! Please, like I'd do anything as mundane as that. No, what I have in mind…" her eyes gleamed with a lustful flame, "Is some old fashioned endurance training."

"…Huh?"

Yushiro blinked in confusion but his bewilderment only grew when Kukaku reached for the tie to her skirt, undoing the knot and letting the white garment fall to the floor. The young clan leader almost choked on his tongue with pure shock when the busty woman reached behind her neck, undoing the back of her red top and letting it fall to the floor along with her skirt. Yushiro's golden eyes stared at Kukaku as she stood directly over him in nothing but a pair of white panties.

It'd been often said that Kukaku Shiba had the biggest chest in the entirety of the Soul Society, equal in size with the Squad Ten lieutenant, Rangiku Matsumoto. Her jugs were so huge that it amazed Yushiro that the woman didn't have serious back problems.

"L-Lady Shiba! What…what are you doing?!" When he tried to sit up again, Kukaku gave him a look that told him not to try and get up.

"What does it look like? You've been staring at my tits this entire time. Look at this little guy." Her heel pressed against the pitched tent in the thin boy's Hakama. "You look like you're just about ready to burst. I can't believe you got this horny just from looking at my breasts. Oh, how shameful the Shihoin Clan has fallen if that's all it takes to let their clan leader give in to lust." Kukaku gave Yushiro a cheeky smirk. "I can't wait to tell Yoruichi what a pervert her little brother is. Who knew?'

"P-please don't tell Big Sis!" pleaded Yushiro, mortified at the idea of Yoruichi thinking him a lecherous pervert.

"Don't worry. This little training session of ours will be our little secret." Reaching down with her hand, she grabbed the young man's pants and yanked it down. Her eyes lit up when Yushiro's cock sprang up, showing off all ten inches of his long length. "Well, well. Looks like we found your Shikai. Or, should I call it a Bankai?" she teased.

Yushiro's heart started to pound harder in his chest when he saw Kukaku reach down and pull her panties down, revealing her bushy cunt. Turning around to face Yushiro, the busty woman settled herself between the young man's legs. "So, here's your first test, runt. If you can endure five minutes of this, I'll give you something special."

"Endure five minutes of-AH!" Yushiro's gasp was loud when his cock was wedged between the biggest breasts in all of the Soul Society. He lay there on the floor, his face twisting with pleasure when those soft globes enveloped his clamhammer, Kukaku purring as she felt how big he was in between her tits. The tip poked out of the top of her cleavage, just begging to be licked and sucked on.

Without any further hesitation, Kukaku squeezed her tits together, chuckling at the cute face the Shihoin Clan leader made before she began to drag her breasts up and down, giving Yushiro literally the biggest paizuri of his life. "What's the matter? You're supposed to be the future of the Shihoin Clan and yet you can't handle one little woman?"

Panting as sweat started to bead down the side of his forehead, Yushiro watched helplessly as the fiery woman got him off with her tits. 'Little? There's nothing "Little" about this woman? Fuck! Her breasts feel so good! I…I don't think I can last a single minute, let alone five!'

The thick, bulbous head at the tip of Yushiro's cock pulsed, making Kukaku raise an eyebrow while she continued to get the boy off with her paizuri. "What's wrong? I just barely started and you're already about to blow," she scoffed, irritated at the boy's quick response. "You blow your load too soon and I'm going to make sure you're outed as a quick shot, boy!"

Realizing that his reputation was on the line, Yushiro gathered his nerve and did his best to keep the pleasure in his loins at bay. It was a less than easy task. Kukaku's heavy globes squeezed his cock in the most pleasurable of ways, her fast pace making her tits jiggle as they collided with his pelvis. Balling his fists, Yushiro squeezed his eyes shut as he endured such delectable torture.

Seeing the purple-haired boy try so hard to resist her paizuri, Kukaku smirked. Looking at the clock, she noted how only a minute and a half had past. Her eyes glanced downwards at the head poking out of her tits, pre-cum leaking out of the large slit and smearing all over her breasts. "Looks like this guy's looking a little lonely. Why don't I give him some lovin'?"

When a hot, pink tongue started to lick Yushiro's tip, the young man's eyes burst open and he looked down just as Kukaku started to take him deeper into her mouth. "K-Kukaku! That's…oh fuck!" A shiver ran up his spine. His body was caving and he knew it. "I can't…I can't…" he sputtered weakly.

"Mmmmh!" Kukaku hummed from the thick taste of manmeat, her tongue coated with a healthy dose of pre-cum. Her tongue swirled around the tip before she forced another restrained groan out of the boy. She could tell he was close, so very close to blowing his load.

But Yushiro surprised her with his resistance. Even with her licking and paizuri, he still held on with what willpower he had left. But in the end, no man could resist Kukaku's paizuri and he gave in to the pleasure. "Cumming! Kukaku! I'm cumming!" His back instinctively arched and his balls tightened. "I'm…Ahhh!"

Kukaku had taken her mouth away from Yushiro's cock right as the large tip started to pulse. She grinned when a hot rope of steaming hot cum erupted from the tip like a geyser spraying water, landing right in her awaiting mouth. Yushiro bucked his hips, making Kukaku's huge tits jiggle while he covered her chest with his hot seed.

"Heh, not bad," Kukaku licked her cum-stained lips, satisfied with the thick and bitter taste of Yushiro's baby batter. Pulling her tits away from Yushiro's spent manhood, the busty Shiba woman pushed her huge jugs up and licked the cum off of them, making them glisten with her saliva. "Hmm…not bad. You certainly let out a lot." Wiping her mouth clean with her arm, Kukaku looked back down at Yushiro and gave him a knowing smile. "You were really backed up. I guess the head of the Shihoin Clan doesn't have a lot of downtime to rub one out, do you?"

"…Not really…" confessed Yushiro, still lying on the floor.

"Still, you almost lasted the whole five minutes. That's better than I expected. The way you were moaning I had thought you wouldn't last even thirty seconds. So maybe you have some actual willpower in that backbone of yours after all. But you still failed to last until the end. So now it's time for your punishment, Yushiro…"

Yushiro braced himself when Kukaku stood up. Walking around the lying Shihoin, the busty babe stood over his head. A spark of realization hit Yushiro and he gasped in horror right before Kukaku promptly sat down on his face. "Next test? You're gonna get me off before you cum again? Because if this time you blow your load too early, I'm really gonna punish you!" said Kukaku before laying down on top of Yoruichi's little brother, rubbing her pussy all over his face.

While Kukaku had easily the biggest pair of breasts in all of the Soul Society, her rear end was just as fine and desirable. Yushiro could barely breathe while the Shiba woman rubbed her womanhood all over his face. His hands went to Kukaku's phat ass, his fingers digging into her plump cheeks. The taste and smell of Kukaku's wet womanhood was not quite desirable to Yushiro considering the situation and the fact that Kukaku didn't decide to shave but he still opened his mouth and started licking her bushy cunt.

"Ahhh…" Kukaku's face twisted and she let out a rare, feminine moan when she felt Yushiro's small tongue start to lap at her pussy. "Atta boy! Now then…" Her hand reached for the young clan leader's softened cock and started to stroke it, working Yushiro's bitch breaker back to life. She licked her hungry lips when it finally stood at attention, just begging to be sucked. "Let's see how this little guy can handle round two…"

When a hot and wet vacuum suddenly surrounded Yushiro's huge cock, the boy gasped into Kukaku's muff before realizing that his sister's best friend was sucking him off. Kukaku hummed as she dragged her tongue up and down the shaft of his cock, her pussy getting wetter from the taste of cock. Going back to the tip, she wrapped his lips around the thick head and took him into her mouth, bobbing her head up and down rapidly. She felt the tip touch the back of her throat and relaxed, taking him even deeper until her chin touched the boy's large balls.

"Mmmmh!" The tightness of Kukaku's throat made Yushiro's head spin. But he was determined not to let the devious woman get the better of him again. His tongue slipped inside her juicy cunt, finding her sensitive spots and making Kukaku moan into his cock.

'Fuck…for someone who looks like such a twink, he's quite good at licking a woman's pussy. Oh fuck…' Her body shivered, tensing up. Kukaku was already wet just from getting the boy off with her breasts and licking the tip. Now with the young man licking her G-spot, she felt her stomach start to tense. "Mmmmmmmmh!" Determined not to lose to Yushiro, Kukaku began aggressively sucking his cock, the two entering a weird competition while getting each other off 69-style.

But with both of them so horny, it was only a matter of minutes before they both finally snapped. Kukaku curled her toes and rolled her eyes into the back of her head, moaning into the cock in her mouth before she gushed all over Yushiro's face, giving him a good taste of her juices. Yushiro likewise couldn't handle Kukaku's mouth and moaned into her mouth, his cock twitching before it shot more cum down the Shiba woman's throat.

Pulling her head back and rolling off of Yushiro's naked body, Kukaku wiped her mouth clean again and grabbed her discarded shirt, handing it to Yushiro to clean his face. "Ready for your next test?"

Yushiro could only gape in shock. The woman wanted more? He didn't know how much he had left in his balls. His instinct was to try and get up to leave before Kukaku could shatter his hips. That idea came and went when Kukaku pounced onto him, pinning him to the floor while straddling his lap. "K-Kukaku! Are you serious?"

"We're both naked and have already gotten each other off. What makes you think I'm pulling your leg," Kukaku pointed out, lifting her hips. Yushiro was still hard so she aimed her bushy cunt right at his slickened head. "So for your next test, let's see how well you can handle a pussy!"

Yushiro had never been with a woman before. He'd been too busy trying to hold the clan together in his sister's absence to try to court a lover. And most women were more often than not turned off by his feminine looks. So Kukaku was the lucky girl who got Yushiro's virginity when she slammed her hips down and speared herself onto the boy's cock. While Yushiro gasped in surprise when a warm and wet pussy surrounded his cock, Kukaku couldn't hide her face twisting with pleasure as her womanhood was spread wide. "Ooooh! Fuck!" She wasn't quite as promiscuous as Ganju sometimes feared but she was more than versed in the pleasures of the flesh to know when she had a cock worth riding.

Leaning back, Kukaku put her hands on Yushiro's knees before she started to move, lifting herself all the way up until only the thick head of the boy's manhood remained inside of her before slamming back down, gasping and moaning as her pussy was bottomed out, the tip touching her most intimate of place.

When Kukaku called this an endurance exercise, she wasn't kidding. The way she was riding him, slamming herself up and down on his meat rod made him feel like a nail being hammered into the ground. Yet still a moan of pleasure left his lips, his hands reaching up to grip her curvy waist. His golden eyes became mesmerized by the bouncing of the woman's huge tits. She undid the bandana on her head, letting black hair spill free all over her chest and back.

Fap! Fap! Fap! Fap! Fap!

"Yes…yes…yes…" slurred Kukaku, quickening her pace. She reached down with her real hand to rub her clit, making jolts of pleasure shoot through her beautiful body. Her phat ass jiggled each time it slammed onto the boy's thin hips. "Ooooh! Fuuuuck!" Kukaku's eyes became glazed as the pleasure took over.

To Kukaku's surprise, Yushiro suddenly sat up. He quickly tore off his top to expose his thin chest before he wrapped his arms around her, gripping her large ass while pressing his chest against her huge tits. "Fuck! Kukaku! You…feel amazing!" he panted, his breath hot and ragged, hitting Kukaku's face.

"That's because…you're a fucking breeding stud!" the busty Shiba moaned back, cupping the side of his face with her real hand before pressing her lips against his, giving him a deep kiss. "Mmmmh!" Their mouths opened up to let their tongues slip out, meeting in the middle to make the kiss sloppy and wet, Yushiro tasting the alcohol still lingering on Kukaku's lips.

Digging his fingers into the woman's plump cheeks as hard a she could, Yushiro wrapped his tongue around Kukaku's, saliva dripping down their chins as they made out lewdly. The wet, warm tightness around his cock was driving him mad. All thoughts of his training melted from his mind. The only thing Yushiro wanted to do was keep fucking this big breasted woman.

That wish came to an end when Kukaku, still sensitive from climaxing earlier, pulled away from his lips to let out a deep moan. "Fuck! You're gonna make me cum!" Her hails dragged across his bare back, leaving scratch marks. "I'm…oh fuck! I'm cumming!" she gasped, throwing her head back suddenly and wailing with pleasure. "Ahhhh!"

The tight vice that clenched Yushiro's cock only got tighter. Groaning as he felt his limit reached, Yushiro buried his face in Kukaku's bouncing tits. "I'm gonna blow!" he grunted, his voice drowned out by the huge mounds of flesh covering his face. "Nghh! Ahhhh…"

Kukaku's eyes went wide when she felt a hot rush of white cum suddenly fill her pussy, the boy shooting an impressive amount despite having climaxed twice already. Yushiro hugged her tightly while he finished inside of her, a muffled moan coming from him.

Coming down from their highs, Yushiro fell backwards, Kukaku lying on top of him. Her senses recovering quicker than Yushiro's, Kukaku looked down at Yushiro and scowled. The Shihoin clan leader took his face out of his teacher's tits and let out a yelp when Kukaku suddenly grabbed his ear and twisted it. "And who the fuck said you could come inside me? The last thing I need is to be carrying your kid!" she scolded, lifting herself off of him, a cocktail of sexual juices spilling from her cunt as Yushiro's cock slipped out of her.

"I'm…I'm sorry!" cried Yushiro, fearful of the woman's wrath as well as what his sister might say if he'd gotten her best friend pregnant.

Sighing, Kukaku sat up. "Whatever. It's a safe day anyway," she told him. 'I think…' Shaking her head back to reality, Kukaku looked over at her charge and smirked. "I hope you don't think this means you're off the hook for your training. If anything, you just gave me the excuse to work you to the bone." She grabbed her top and put it back on before grabbing her skirt. "Go and take a shower in the guest bathroom. You smell like a whorehouse. We'll get back to your training afterwards."

"Y-yes ma'am." Yushiro pulled up his pants and put his shirt back on, standing up on shaky legs. He turned to leave Kukaku's room but was stopped when the woman put a hand on his shoulder.

"And if you do better in your training, perhaps I'll have you do some more endurance training…" she whispered into his ear before smacking his ass to send him out the door.

Yushiro blushed as the door closed behind him, his heart beating with anticipation. "Sis, what have you gotten me into?"

The End