The gate into the Seiraitai opened up as the form of a pissed off soul reaper dragged another struggling form through, the gate shutting closed as the two walked into the 13th division headquarters. Rukia Kuchiki tossed her fellow soul reaper, Momo Hinamori into the wall, the latter shivering out of fright and fear of Rukia.

 â€œHinamori, this is the third mission in a row that you have almost gotten both of us killed! First it was that simple hollow mission, then that time against the arrancar, and now you almost got us killed by a damn quincy!” Rukia stood as tall (as her as her short 4’9” frame could) with her arms crossed as she lectured Hinamori. Her purple eyes gazed deep into the panicking assistant captain as she waited for another blubbering excuse and half assed apology from Momo.

 Rukia Kuchiki wasn’t exactly the most intimidating of soul reapers the Soul Society had to offer, but compared to Momo, she may as well have been the Captain-General himself. Unlike the Captain-General, she wasn’t sporting a long beard with old, tired eyes. Instead, aside from her iconic hairstyle, she was defined by her perky tits and cute butt. Despite the long soul reaper robe covering most of her body, her ass could be seen jutting out against the tight fabric, her perfect tits catching the the eyes of the more degenerate reapers in her presence. Rukia was normally oblivious to this herself, as she was a dedicated reaper, more dedicated to her job and responsibilities than her looks.

 â€œWell? Are you going to say something? Anything at all?” Rukia’s sandal tapped the ground, her anger transferring to the wooden floor as her taps got harder and harder.

 â€œI’m sorry, I’m sorry!” Momo’s words were hard to make out as her tears and whimpers got in the way. “I-I thought I could t-take him on! He-he was just a stray Quincy left over from our last big f-fight, I thought he w-would be weak!” Momo tried to pull herself together and stand up, but Rukia abruptly placed her sole on her face, kicking her back down to the ground.

 â€œDo I need to remind you how fucking strong Quincies are? There’s a reason we all almost fucking died, you idiot!” Rukia thought back to the Quincy invasion almost a year ago, before they were saved by Ichigo managing to kill Yhwach, the Almighty. A lot of soul reapers she knew had fallen to the ruthlessness of the Quincies, so hearing Momo, a soul reaper who had only been a burden to the Soul Society in her recent memory, shrug them off so easily irked her in ways that she didn’t want to even think about.

 Rukia took a deep breath looking at the disheveled mess before her, before sighing in disappointment. “I’m going to have to report this to your captain. I’ll leave it in their hands. I don’t want to deal with this. I don’t even know why you instigated a fight to begin with, from what I saw he wasn’t even doing anything outside his jurisdiction.”

 Momo pulled herself up to her feet, shaking as her tears started to dry and regaining her composure. “He recognized me, apparently from the invasion. He called me ‘a pet to that despicable soul reaper, Captain Aizen,’ and I didn’t want him to disrespect Captain Aizen like that.”

 Rukia stopped in her tracks, her blood running cold. Her pupils dilated as she started shaking herself, although it wasn't from fear or panic. No…she was angry.

 â€œWhat did you say?” Her voice was like nails on a chalkboard to Momo’s ears, her voice trembling once again as she felt a change in Rukia’s spiritual pressure.

 â€œU-uh, I s-said I didn’t w-want him t-to d-disrespect C-c-captain Aizen…”

 â€œAizen, huh? The one that got so many of us killed? The one that didn’t kind the death of the Soul Society? The same Aizen that both used me to get to Ichigo, a normal human, and also planned my execution? That Aizen? I know you’re not talking about that Aizen to me, right Momo?” Rukia took the hilt of her sword, thrusting it into Momo’s abdomen, knocking the terrified woman to her knees. “Cause that piece of shit isn’t worth getting killed for right?” Rukia used her hilt to lift the fearful Momo’s chin up, her icy stare freezing Momo in her place. “Go ahead, please, tell me what other Aizen you were talking about,” Rukia demanded, her words laced with spite and fury. “Tell me whose honor was so important that you felt the need to defend it with not just your life, but mine.”

 Momo knew that she was in much bigger trouble than she was before and regretted speaking up. Despite everything Aizen had done in the past, even almost killing her with a stab through the chest, something in her couldn’t see him as anything less than her fearless Captain. However, she was regretting these feelings as Rukia stood above her like a wrathful spirit, seeking vengeance.

 â€œLet me make this simpler for you.” Rukia leaned in to the frightened soul reaper girl, the normally cute Rukia’s cheek gracing Momo’s as Rukia whispered into Momo’s ear.

 â€œDid I almost get killed because you defended Captain Aizen, our prisoner and traitor to the Soul Society?” Rukia heard nothing but whimpers and short, panicked breaths before a meek sound escaped Momo’s lips. “What was that? I didn’t quite hear you.” Despite her words, which would normally be seen as encouragement, their tone was that of pure unadulterated hatred.

 â€œY-yes…I-I was defending Captain Aizen…” Momo’s eyes glanced at Rukia, who stood back up straight.

 Rukia took a deep breath before letting it all out at once, the sound of seething breath barely hidden through her teeth. “That’s all I wanted to hear.”

 â€œI-I’m so sorr-” Before Momo could cry out another useless apology, she felt a pain in her neck. She saw Rukia’s sheathed blade had been swung, everything fading to black as the last thing she saw was the other soul reaper standing over her.

~~~

As she came to, Momo realized that they were no longer where she remembered being knocked out. “W-where am I?” She looked around, seeing that she was in an underground cavern, mysteriously lit despite the lack of sunlight. She also noticed that she was tied up to a tall stalagmite, naked, only adding to her anxiety.

“I’m not surprised you don’t know where you are, you never were aware of what was going on around you, were you?” Momo looked directly up at the silhouette of Rukia’s petite body against the unsourced light above, crouched on top of the same rock formation that she was tied to. Upon closer inspection after her eyes had adjusted, she noticed that Rukia was also naked, her cute tits and shapely ass in full view. Her pussy was adorned with a cute bush of hair, well kept and closely shaven. Momo could barely make out Rukia’s asshole, pink and pulsating, without any visible flaws.

“This is where Yoruichi taught Ichigo Bankai, directly underneath the Sokyoku. Even Renji found this place, so I can’t imagine it’s too much of a secret. That is, for soul reapers who actually have a single shred of talent within them.” Rukia hopped down, presenting her cute but powerful body for Momo to gaze upon, both in the fear of what Rukia planned and in awe of how perfect Rukia looked. Her boyish features only seemed to emphasize her overall sexiness, a trait that Momo found herself envying despite her current situation.

“Wh-why are we naked, Rukia? What are y-you gonna do to me? I-is this some kind of f-fetish of yours.” The comment took Rukia aback, her eyes glancing to the left as she scratched her head nervously. “What? N-no…” Even though she was scared, anxious, and still confused with Rukia’s intentions, Momo couldn’t help but notice how cute Rukia was when she was bashful.

Rukia regained her composure, getting over the sudden acquisition before her face went stern again. “No, I’m here to get rid of you, Momo.” Whatever reassuring feeling Momo had immediately disappeared as Rukia said those words. Momo detected no lie or reluctance in Rukia’s statement, none whatsoever. She was being honest.

“W-wait, y-y-you’re gonna kill me? J-just because of w-what hap-”

“Yes Momo. The 13 guard companies have no need for someone who is willing to get their comrades killed for the sake of a murderer, traitor, and evil person as Aizen. You’re a liability, and quite frankly, you’ve pissed me off.” Rukia then turned around, presenting her ass to the tied up Hinamori. “And maybe I do have some goal to please myself while doing it, but this is 100% because I think it’s best for everyone if I get rid of you.”

Before Momo could sputter out another frantic word, Rukia’s ass had engulfed her head, her cheeks keeping her head from moving as Momo’s mouth was squarely set on Rukia’s asshole. Momo tried to keep her mouth shut, but an angry and slightly aroused Rukia pushed her rear even more, forcing Momo to open her mouth as her nose was suffocated by Rukia’s ass fat.

“Oh fuck, your breath feels so good against my asshole, Momo! Maybe you’re not that worthless…maybe if you show my asshole a little tongue action I’ll go easier on you.” Rukia began swaying her hips, physically trying to coerce Momo into rimming her winking asshole. Fearing for the outcomes, Momo eagerly dropped whatever self respect she had and started lapping away at Rukia’s anus, her tongue feeling through the various ridges and wrinkles.

“Wow, holy shit, you’re actually doing it.” Rukia moaned as she reveled in the power over Momo had, not to mention the arousing sensation of the desperate tongue lapping away at her sensitive asshole. Rukia used one hand to push the other girl’s head into her ass while the other one found its way to her clit as she began rubbing herself to the rhythm of Momo’s tongue work. “God damn, you’re a fucking ass slut, Momo, why are you so good at this,” Rukia asked as she pressed Hinamori deeper into her ass. Rukia didn’t last long against Momo’s assault on her asshole before screaming as a flood of cum streamed through her tight pussy, dripping down her legs and down to Momo’s face, giving her a taste of Rukia’s love juices.

After she came, Rukia’s body lessened the tension from the intense rimming session. Her grip on the back of Momo’s head lessened, but she didn’t bother taking her ass off of Momo’s face. “Oh fuck, Hinamori, maybe you really were just meant to be an ass licker. I wonder if Aizen ever made you give him a good rimming, I doubt you’d say no.” Though Rukia couldn’t see it, Rukia accurately guessed that Momo was blushing at the idea.

“I almost feel bad for what I’m about to do, to be honest, I wish I could keep you around…” Though muffled through layers of ass fat, Momo heard Rukia’s lament and started to panic. “B-but I thought you said you’d s-spare me!”

“I said I’d go easy on you. And even then I said ‘maybe’. Maybe.” Momo heard Rukia’s cold words and started to fear Rukia’s actual plan. But before she could prepare herself to ask what that was, Rukia’s ass once more forced itself onto her, her vision nearly gone as her cute cheeks engulfed her once more. However, instead of stopping, Rukia kept pushing. That’s when she felt a completely new sensation. It was like her head was being stuffed inside a tight fleshy tunnel, as if she were being swallowed alive. That’s when the sensation reached her neck, and she finally realized what was happening; Rukia was somehow shoving her into her ass.

 â€œRukia, what are you doing!” Momo began struggling, only eliciting moans from the dominant soul reaper. Every attempt to escape was met with only tighter constrictions from Rukia’s powerful asshole, dragging her in deeper even faster. Hinamori panicked even more as she felt the warm, slimy touch of Rukia’s rectum grace past her shoulders.

 Rukia breathed hard as she worked on forcing the inferior girl up her ass, her deep breaths cut short by moans and gasps from the overwhelming pleasure she felt from every movement Momo made trying to escape her anus’ clutches. “Y-you asked if i-it was a fetish- oh fuck…a fetish earlier. M-maybe not th- oh yeah, get in there. Not the rimming, but I found out about this in the human world. It’s called- God damn, stop moving so much! Fuck! It’s called anal vore.” Rukia wiggled her ass as it slowly enveloped more and more of Momo’s body, everything past the shoulders easily filling into her gut. Rukia’s stomach started to show signs of her unwilling guest.

 Momo felt that everything up to her waist had been swallowed up by Rukia’s hungry asshole, the only obstacle now being her waist, which she knew would be light work for Rukia’s new kink. Even knowing that she would most likely not be escaping Rukia’s ass, she still struggled, relying on a little chance that maybe Rukia would get tired and not finish the job. However, Rukia was filled with passion and a fiery determination to completely swallow her prey.

 Rukia grabbed her perky tits with both hands, massaging them as she allowed Momo’s struggles to fuel her lust. “Oh fuck, it must fucking suck to be human if they can’t even do the fetish they create, right Momo? Luckily us soul reapers are a lot more durable. Well, lucky me, anyways.”

 Momo listened to Rukia, almost allowing herself to get angry that she was being talked to so casually, as if she wasn’t being stuffed deeper and deeper into her anus. Suddenly she felt her world turn upside down, her feet swept up from under her as they were now pointing towards the sky. She realized that Rukia had switched positions so that she was laying on her back, her own legs facing the sky, backed up by the stalagmite that Momo had been tied to earlier, the ropes long since been loosened as her arms were already restricted by Rukia’s strong butt muscles. Momo realized why she had flipped herself; Rukia was planning on using gravity to finish the work.

 Knowing this Momo finally gave up, knowing there was no way she was going to escape Rukia’s mighty ass. As she felt the last of her legs slowly slip into the fleshy abyss, she contemplated what had got her there. Maybe she really was useless and deserved to be, what was it…anal vored? From within Momo could feel Rukia pleasuring herself to Momo’s dire fate, hearing the muffled moans, gasps, and screams from her predator. Was that what her hundreds of years of life had equated to? Pleasing Rukia’s strange new fascination? Her eyes closed as she dramatically envisioned her end, her last thoughts being the sensation of Rukia’s asshole closing shut as her toes finally joined the rest of her inside Rukia, and the sounds of Rukia climaxing as she had been fully swallowed up.

~~~

 Somehow she wasn’t gone. Momo couldn’t really say she woke up, no, that would require eyes. No, instead she simply sensed that she was awake…or “aware” might’ve been the more appropriate word. It was dark, maybe? She couldn’t see anything, or hear anything, or really sense anything at all. Her form had completely disappeared, leaving just the essence of her spiritual pressure.

 However, Momo sensed that she was moving and not of her own will either. She was being forced through something, like a snowflake on a gust of wind, or strong ocean current. As she felt her incorporeal form flow, she felt that the current had hit a wall of sorts, yet the current didn’t stop. Instead, the pressure built up and up and up until…

 Momo heard the sound of Rukia passing gas as her state passed through Rukia’s ass once more, although this time in the form of a fart. Before she could even contemplate the absolutely humiliating act of being turned into nothing but a gassy movement for the latter soul reaper, she felt her body start to swirl around into something, like water down the drain of a bathtub. Down and down and down into…something…

 Momo opened her eyes…yes she now had eyes. She felt her body, yes her body. It seemed like her time as a soul fart was very short lived, however it didn’t lessen her anxiety any more. She sat up, her body still naked, except it wasn’t her “body”. It felt more real…more…human.

 â€œOh it worked,” a massive voice noted, rumbling the sky above Momo. It was definitely still Rukia, but something was…off. Momo craned her new body’s head up before gasping at the sight before her. Still adorning absolutely no clothes whatsoever was Rukia, but the previously petite and tiny soul reaper was now towering above Momo, taking on the role of a giantess in Momo’s confused eyes.

 â€œW-why are you so massive?” Momo yelled, hoping her tiny voice could be heard by her captor. Luckily for her, Rukia was intent on listening to Momo’s plight.

 â€œAlways with the questions with you, huh? Well, actually I haven’t changed size at all. You just happen to be in an absolutely cute, tiny body!” The new revelation had Momo looking around her surroundings for the first time since waking up again, realizing that Rukia was right. Nothing else had changed, just her.

 â€œAnd before you ask, your soul has been bound to a new Gigai, courtesy of Kisuke Urahara. I don’t know why he made such a tiny, useless Gigai, but he asked me to test it out once I had the chance. I’m not gonna lie, I was enjoying you being up my ass so much that I almost forgot I had it on me.” Rukia let out a nervous chuckle thinking about what Kisuke would’ve done if she actually had forgotten about it. “I’ll make sure to take you to him, he’ll wanna do some research on you later. But really, it was a two birds in one stone situation.”

 Before she could interject, Momo was swept off the ground as Rukia picked her up, her new, tiny body firmly grasped in Rukia’s grip. As she was brought up to Rukia’s face, she took notice of every bit of her embiggened body up close, noticing every little detail of her flawless petite body up close. “Honestly, I probably should get to him as soon as possible…but I think that can wait.”

 Momo let out a moan as Rukia’s tongue lapped over the tiny girl’s body, somewhat surprised that she felt every sensation the Gigai felt. Rukia’s massive muscle felt every crevice of Momo’s new body, stimulating any erogenous zone her new body had to offer.

 â€œW-what are y-” Her words were cut short as her head was engulfed by Rukia’s entire mouth, Momo moaning as Rukia’s lips sucked her body like a popsicle, moving Momo’s tiny body in and out of her mouth as she got a taste of the tiny Momo, before eventually letting her out with a satisfying pop.

 â€œWhat w-was that for,” Momo gasped, kinda hoping for more of the same.

 â€œJust lubing you up for round two.”

 â€œR-round t-two?”

 â€œYup!”

 Momo let out a scream as her world was turned upside down once more, before she was face-to-face with a much more intimidating scene of Rukia’s ever so hungry asshole. Her other hand was holding up her cheek to make her fate much more obvious.

 â€œAnd this time, you’re gonna stay there for a while!” Momo didn’t even get a chance to take it all in before getting shoved in once again, her tiny body easily sliding into Rukia’s ass as her new living buttplug.

 Rukia bit her lip as her asshole closed behind Momo, letting her cheek drop as a final nail in the coffin for her new toy. Rukia gave her ass a solid slap, reveling in the fact that one of her biggest pains in the ass was now a pleasure.

 â€œI’ll take you out next time I talk to Kisuke, but for now you’re my buttplug? Ok? Ok.” With a struggling Momo in her ass and a job to do, Rukia donned her Shihakusho and headed out of the cavern, fantasizing about what she’d do next with her new toy.