A/N: Alright, so in this chapter, I'm going to treat this as an AU where the plot of Highschool DXD didn't happen. That anime's harem is one of my favorites and I'm not going to ruin it by having my OC in the same universe. Heck, this chapter won't even have anything to do with demons, angels or oppai gods. It's just a regular old AU like ours. Sorry if I accidently get her wrong or OOC while trying to be accurate.

Akeno Himejima woke up, stretching in her bed. The girl smiled once she remembered. Today was her three year anniversary with her boyfriend, Itachi Koibito. Getting up, she looked through her closest to see if there was anything special she could wear. However, it appeared that most of her clothes were dirty, and the ones that were clean were clothes she outgrew. Then again...maybe that's just what she needed, smirking at the thought. Akeno picked her old Occult Research Club outfit and put it on, with some struggling in the process. First was her underwear. The panties were easy but the raven haired girl had to put an old bra backwards due to her having grown since the last time. Next was her skirt and shirt, which she had to tuck in her gut to put on, and the shirt was terribly too small, the buttons straining to contain her heavenly bosom. Next was her black jacket which squeezed her boobs together. Overall it was an outfit that made breathing a bit difficult. But, given the kind of girl she is, she prefers a challenge. Opening the door of her house, whom she shared and paid partial rent with best friend Rias Gremory, Akeno took a stroll since her boyfriend is only a 10 minute walk away. She giggled in amusement each time someone, while staring at her, would either walk into a wall or telephone pole, trip over something, get slapped by their girlfriend, and even when at one point a guy crashed their car through a mailbox.

Itachi Koibito was watching some random tv, eating some sugary cereal when a voice called for him through one of the front windows.

"Darling-kun! Yoohoooooo!" He looked to his left and his eyes opened big and wide when I saw my girlfriend, Akeno, pressing herself against the glass in a familiar outfit which was on the brink of destruction. While the buttons of her shirt weren't popping, miraculous in of itself, they were pulled from their original position, so I could actually see button, string and then shirt. Which gave me a good look of her cleavage within. I got up to open the door and she came in to hug me. "Darling-kun, it's our three year anniversary!" She laughed.

"Hehe, yeah. Today's going to be great." I responded.

"I'm so happy, Darling-kun! What do we have planned for today?" She asked while jumping up and down. Which was apparently enough for the string of the buttons to finally give up, and snapped, giving me a better look of her cleavage. "Oh my." She said with her trademark catchphrase and then giggling. Man, I sure love it when Akeno giggles and laughs like that. Even after three years it still makes my heart flutter. I took her hand.

"Come with me Akeno. I've got a surprise for you." I suggested. Akeno giggled.

"Sure, lead the way." So I took her to my room, which looks like your typical room for a post graduate boy to live in, and I grabbed a cup of water I prepared for her.

"Drink this water. It'll make what I have in plan be more special."

"Oh, do you have it laced with something?" She asked with a knowing giggle. "Okay then, I'll bite." Taking the glass, Akeno drank it down, and placed the glass back down on the table. Seconds passed before Akeno gasped and clutched her chest with her arms. Her light purple bra grew two dark dots where her nipples were, and white droplets appeared. "Huh? I'm lactating? It's that kind of drug you gave me?" Yep, that's what I gave her. And that weren't enough, it appeared her breasts were expanding. Her boob flesh was already spilling over the cups as is since she's outgrown the size long ago, but they were growing even bigger thanks to milk that they overflowed not just over the top, but now even the bottom and sides. This is so hot!

"Here, let me fix it." I said with a chuckle as I helped my girlfriend out of her jacket and shirt, and started pulling at the back of her bra. She groaned as both the breast expansion and me pulling her bra really put the pressure on her bosom, causing milk to squirt through and really soil her wet bra, until eventually the front just snapped open, causing her boobs to spring out and bounce while the milk sprayed in various directions onto the floor.

"Oh my, you sure started our anniversary in a naughty way." She giggled, a blush very evident on her face. "But I like it. Let me show you how I appreciate it." Akeno pounced on me, surprising me as I was pushed down onto my bed. Yes, bed. Not futon. It may be what everyone else has but I'd rather not have the backpain that comes from sleeping on the floor even if its comforted by a futon. "Now, let's start this off with some titty fucking." Akeno decided before forcibly removing my pants and underwear and sandwiching her boobs around my growing erection. "Oh my, you appear to be growing so hard so quickly. Is it because I'm also lactating?" She asked me. While she's given me boob jobs before, this was the first time warm fresh milk was used as a lubricant, so it was more erotic than usual for me. "You sure love my boobs, don't you? Don't you? I'll rub it nice and hard for you." She then squeezed her boobs super tight around my dick, which sort of hurt a bit as I groaned from how much pressure was squeezing down on it. She giggled at my pain. That's what one gets when their girlfriend is a sadomasochist. But that just makes our sexy times more flavorful. It soon became even more pleasurable when Akeno started sucking me off as well, bobbing her head up and down while raking my penis with her teeth. It was like my angel of a girlfriend knew how to combine the best of heavenly carnal bliss and the uncomfortable pain of hell at once. She started to go faster, which was causing me to be pushed over the edge with how good and painful it felt at the same time. With one final push and suck, I yelled out as my semen poured into her mouth, some escaping from her lips and dripping down onto her breasts. As she sucked up the rest from within, Akeno moved her head back to let my limp dick fall out. "Oh my. You sure came a lot. Have you been saving up for me?"

"Ye-yes." I replied back, panting from how stimulating that was.

"Hehe, you're just so yummy, Darling-kun. But it's not over yet. We've still got much to do." Akeno started giving me a handjob which was slow and delicate. She might be a sadomasochist, but if there was one thing that she respected, it was my wish that she go slow for a minute or two right after I climax. Otherwise it just plain hurts and I have trouble walking and other stuff afterwards. Once her hand job sufficiently made me hard again, she removed the rest of her clothes and mounted my waist to position her pussy over my dick. "Now it's time for the main course. You're going to melt right in." My girlfriend plunged down, making my shaft pierce her pussy. Akeno moaned in euphoria as she pumped up and down, her breasts bouncing up and down, dripping milk around my midsection. I couldn't take it anymore. Reaching my arms upwards, I grabbed hold of her boobs in my hands, gently squeezing them since I wasn't in the best position. But this was apparently enough to send my girlfriend wild, as she growled from lust and threw her head back. "Ah, what's happening? This feels too good!"

"I guess that's the drug, isn't it? Maybe I'll be the dominant one this time." I said, my sense of confidence growing as I massaged her bosom as best as I could, which resulted in her breasts spraying more milk and Akeno to screw me even harder in an erratic pattern.

"But...but I like being the dominant. I love it! You can't have it!" She whined in a rather adorable way. "Wa-wait! You're making my tits feel too good! Too wonderful!"

"That's because they are too good. It's like they're melting against the touch of my fingers. I bet I could make you cum by tweaking your nipples." I stated, liking this new sense of power.

"Do-don't you dare." Akeno tried to object, but I did just that, tweaking her nipples making her squeak and cry out as tears appeared in her eyes. My fingertips were slippery with milk, but I held on. "Ah! Too good! I can't-can't cum from this! No! I'm cummiiiiiiing!" As she screamed like a heavenly banshee, her pussy clenched on my dick, and normally I would've cum with her, but I didn't have enough time to build up so I just shot blanks into her, even feeling some of her juices go into my penis. "Ahhh, wow. So much feeling. So good." Akeno collapsed on top of me, the both of us breathing heavily from having sex that was more intense than normal.

"Did you...like that?" I asked, wanting her opinion.

"Yes. It was...wonderful."

"Well then, I guess it's time for phase two."

"Huh?" My girlfriend sounded confused while I pushed her off and went for my closet. From it, I got some rope. Before she knew it, I had my girlfriend tied up and resting against the wall. Her wrists were tied behind her back and used as a support if she were to go backwards. Her legs were also tied in a way that they were stuck in a folded position one would do if they were hugging their legs, which even then they were also tied to her torso so that they stay in place in a secured way. I also took the effort to place her breasts on her knees, which spilled over in every direction.

"Oh my." I said to Akeno, getting a thrill saying her signature phrase back at her. "It seems like you're in quite a bind." I chuckled at the pun.

"Darling-kun, why are you doing this?"

"You've always been the dominant one in this relationship. Sure, when it's not in the bed we treat each other pretty equally, but when we spend special time together it's like you turn from my special angel and fall into a special succubus that enjoys inflicting pain on me. Which I've happily accepted mind you. But I remember you once saying that I could have a turn someday, if you'd allow me to anyway, still being the dominant one as always. So I thought, why not give her the anniversary gift of me manning up and just make the opportunity instead of waiting for it." I explained. Although her eyebrows appeared to be angry, her eyes themselves and smile showed a more proud expression.

"So you think you're man enough to break me? Fine then, Itachi-kun. Do your worst." She challenged, only using my real name whenever I try to step outside of my position. I laughed.

"I intend to." Raising my foot, I stomped on her right breast that was over her knee, though not so strongly as to permanently damage said beautiful mammary gland or her. There was enough strength to make her boob spray a stream of milk onto my leg while Akeno didn't even react like one would expect, though her eyes were super wide open in shock and her mouth was slack-jaw so to speak. Figuring she tried to process what just happened, I helped by stamping my right foot onto her left, this time making her cry out as my other leg became wet in more milk.

"Ah! What is this?! You're squashing my poor boobies! Ah! My milk, it's coming out so forcefully! Ah! How did you-Ah!"

"I used to read H-manga everyday before we hooked up back then and I sold them away. There was this manga, WakuWaku One-sans, that helped inspire this for me. So I'm using this on you now. Oh, and look what happened. You're as empty as the woman in there as well now." By the time I stopped stomping her milk bags, her were flat and empty. Akeno's face was adorable as tears streamed down her face, but it was like somewhere along the line the pain caused her to have another orgasm, sporting an ahegao face. She's just so adorable! Using a knife to cut away the leg restraints, this time I folded Akeno's legs over her body, and tied her ankles to her shoulders around and under the armpits, so that I don't have to constantly hold them down myself. Although her boobs were now empty and floppy, they still pooled a great amount in between her legs.

"You plan on...humiliating me even...more?" She asked, which sort of struck me.

"You read it too?"

"I managed to...read them before you...sold them. They were...quite easy to find."

"Well then, I guess as punishment for looking through my manga, you'll have to beg for me to screw you."

"Ma-make me." She tried to object, but we both knew who was in charge this time. I slid my re-hardened dick across her pussy teasing her entrance while I pressed and and squeezed her empty breasts, which somehow were even softer and squishier than normal! Either I tenderized them to kingdom come or her milk ducts being both expanded and then emptied made her boob flesh more malleable. Either way, I sure am enjoying how squishy her boobs were now. Akeno was groaning and moaning in euphoria from how much teasing I was giving her.

"Come on, I know you want it. Beg me. Beg me like you really want it." I growled, pushing even harder and tightening my grip.

"Ah, ah! No-no fair! You're too cruel! Fu-fine, I want it. This is what I want. It's what I need right now! Fuck me like a bitch that I am!"

"That's right. Today, you're MY bitch!" I pierced her pussy, finally giving my girlfriend what she deserved for all the pain she's given me, and I'll pay it all back in one day. "How does this feel now, bitch?!"

"Amazing! You are absolutely amazing!" I pulled at her empty breasts, pulling them up and down and apart, it was like playing with taffy. "Plunge yourself into my deepest parts! Break my tits!" She tried pleading me. I'm not sure how deep I was going but it sure felt like the tip was kissing something. "Ah, oh my! Your dick is kissing my womb! I can feel it!" This is probably the hottest and wettest sex we've ever had, unlike anything before. After a solid minute of screwing my girlfriend as hard as I could, we shouted at the top of our lungs as we climaxed together, exchanging fluids. After remaining stiff for awhile, I collapsed onto her, the both of us breathing heavily after such rough sex. "Amazing..." She sighed.

"Yeah. I need to...recover first." I said, not finished yet.

"There's...more?" She asked.

"Yeah. Just give me a few minutes." I requested. Akeno nodded as we stopped to kiss, though after a couple of minutes she did ask me,

"Can you please cut me out of these? My legs and arms are starting to fall asleep."

"Sure. Actually, I was going to do so anyway for the next bit. It's another manga thing." I told my girlfriend. She smiled as I went to cut her out of the ropes, and then proceeded to put her in stocks, making her seem like a naughty, naked peasant. I laughed as I pushed her down onto her back, causing her breasts to spill-wait. Are they completely full again?! I had to check. I sunk my fingers deep into her boob flesh, making Akeno moan from the the sensations. Yep, I could feel actual milk in there. "Incredible. It must be the drug, for your tits are full again." I licked my lips in anticipation. "I'm going to squeeze you dry like a cow." Taking another piece of rope, I tied her boobs together so that they bulged out and milk started coming from her boobs quite sexually. Pressing her nipples together, I began to drink her milk once again, once again causing Akeno to mew as my mouth filled with milk, which I gulped down wholeheartedly. She even yelped as I grinded her nipples between my teeth. Soon I was full but her breasts were still filled with plenty of milk from the feel of it. "Now, onto the floor." Helping Akeno off my bed, I placed her down butt upwards towards me, her stocks on her breasts causing streams of milk to be pushed out. "Now, before I start, I just want to ask if this is okay? Masochist pain or sadomasochist or whatever is one thing but at the same time I don't want to permanently disfigure you." She looked back towards me with excited anticipation.

"Go for it."

"Alright then." I plunged my dick into her pussy while holding her legs in a way that she folded the other way, going over her upper back and head instead of chest and face. Akeno screamed in euphoria as a lot of weight pressed down onto her bound boobs, spraying milk out like a freaking geyser! This act was so extreme her entire spine cracked in response.

"Oh my gooood!" Akeno screeched, her face wet with milk. "This hurts sooooo goooooood!" She started drinking her own milk as to keep from wearing her voice out and risk a sore throat. My girlfriend looked so perverted and sexy as she drank and get drenched in her own milk. I got turned on even more as I went faster and faster. After awhile, we both came at the same times, screaming in ecstacy, and then everything went white.

We both laid on my bed resting. While the stocks seemed to have put some long lasting malformation into her boobs, there's probably a way to get them back to normal.

"This is the best...anniversary...ever." Akeno sighed. I chuckled as I kissed her forehead.

"Mine too. Next year, let's do even more. Let's go all BDSM to high heaven...or hell. Whichever you like. Akeno giggled.

"Oh my."

A/N: So, how did you like this one huh? Please give a review. Pretty please. Also, if you want to suggest a girl for me to use, give me a plot and use these tags below.

Large/huge/gigantic breasts, breast expansion, bust measuring, bursting breasts(as in clothes are too small for the chest and they burst out), cleavage, nipple or breast slip, bouncing breasts, floating breasts(Floating in water or air or zero gravity), sagging breasts, taut clothes(the shirt ripples with tightness and might rip or not), paizuri, breast smother(Marshmallow hell/heaven), breast pillow, breast sucking, self breast sucking, breast press(into other things making them squish), symmetrical docking(two pairs of breasts of equal size pushing into each other), asymmetrical docking, alternate breast size(AU cup sizes) breast bondage, lactation, lactation through clothes(like a shirt, sweater, swimsuit, etc), breasts on glass, wardrobe malfunction, deep skin(fingers, rope or clothing digging into boob flesh deeper than they realistically should) sarashi and weight gain.

I did use two H-Mangas as inspiration so I'm not plagiarizing. Credit goes to manga artist John K Pe-ta.