(A/N: Read author notes)

Things had been hectic since me and my, and you won't believe this, GIRLFRIEND. Fucked.

Yes, yes. Rias Gremory, that hot wonderful loveable bodacious, and all 100% mine, cool sexy devil beauty was my girlfriend. Was I getting a big head over it? Nah, just a big dick every time I thought of it.

Right, right. Less gloating, more recounting. Well for one, the LP had started to roll in. After our first tryst, I got over 30,000 LP. All those daily and one-time quests flooded in like crazy and elevated our LP counts to new heights.

"I guess that'll be enough to just about finish off everything." Despite how I said it, I was, in fact, not happy.

"30,000 down the drain all in one go huh?" Rias smiled from the bed, her legs still too shaky to stand. I sat down on the bed with a sigh, thankfully I had changed the sheets or else I'd be sitting in my own cum. I brought her head into my lap and played with her hair as I pressed the button. It was labeled: [Adaptive Upgrade]. I swear I hadn't seen it before and that the system added it for the sole purpose of making me spend more LP. It was a room upgrade that took into consideration the current layout of the room and upgraded it based on that. It came with walls, more space, and more rooms, but it also came with more rent.

Like before, one second it was the room we had grown used to, and the next it was something completely different. For one, our vision was completely cut off from the rest of the room by a wall. It was probably a mistake to just call it a room at this point, it was more like an apartment.

"We have proper walls." Rias cheered from my lap, her face illuminated by the newly installed light at the center of the ceiling. "Too bad they're just about the dullest color I could think of." I looked at said walls, they had always been this dull gray, but I guess it became more noticeable when it was changeable.

"I'll buy a few cans of paint." I nodded, envisioning the arduous task even now. "I'll let you decide the color." Her soft smile became more of a smirk and she nodded like that was the best decision I could have made. That smirk then turned hopeful and she reached her arms out in a grabbing motion. "Let's go explore." I nodded, letting her wrap her arms around my neck as I swept her naked form into a brdial carry.

Upon opening the door to leave the bedroom, we were immediately met with the living room and kitchen. Said living room was now a lot larger and felt really empty with just our coffee table and couch. Our kitchen on the other hand looked much more like what it was supposed to. A counter lined the wall, with a sink, stove, and dishwasher built into it. There were cupboards and proper ventilation towards the ceiling and plenty of compartments to put whatever we wanted. Along the walls of the kitchen, there were a few more rooms. One was a room that came with a washer and dryer, and the others were more closets and a storage room.

In other words, unless we wanted something extremely extravagant, there was no point in upgrading the room any longer. All that was left was to upgrade our bed like Rias wished to and install some televisions, that way we could get started on that long watchlist of anime we had written down.

For the rest of that day, we relaxed, sitting on our small cramped couch and getting started on the very first anime Rias had said she wanted me to watch: Food Wars. A few episodes in and I was looking searching the shop. It was expensive, but we found a few of the dishes. The taste was indescribable, and though neither of us came from it, the energy boost did send us back to our room to break into our newly upgraded bed.

The next day, I'd set about planning my ascension to Godhood.

The stats sheet was set up in an organized way, and I learned it as well was based on her world's power structure. At the very top of the screen was a list of stats that I could upgrade.

This included strength, agility, stamina, dexterity, physical defense, magical defense, health, magic, and endurance. They were all upgradable as levels. For example, my strength was at 2 while Rias' was at 4. I was not at all delusional to think that this was linear because Rias was way more than two times stronger than me.

The second thing after that was something I needed to choose before I could even do anything else. It was my race. By default, I was a human, but I had the option to change to a fallen angel, devil, angel, and a wide variety of dragons, youkai, and other species. I was tempted to choose devil, just to match my redheaded girlfriend but when I saw it got rid of the option to choose a sacred gear I thought otherwise. Rias had sold me on the potential of the artifacts, especially if I could choose them.

Thankfully, I quickly stumbled on the more expensive option of becoming a hybrid, though that would take a lot more LP than I had. Which is why, I decided to hold off on buying skills until I could actually afford it. I would've been extremely depressed, given that trying to choose more than one race, not to mention two would cost me 200,000 LP. But, I found another nifty little feature that I wasn't sure even existed prior. It allowed me to spend LP to make more LP. All it did was add a multiplier to how much LP I got after every sexual act, and it stacked of course. So, that's what I focused on for a while after.

Rias on the other hand didn't have the feature. In fact, she had very little of the features that I did. She could of course upgrade her attributes, but she couldn't alter her race, nor could she get new skills, well kind of. What she could do, was upgrade the skills she had and unlock new ones that came with her bloodline. It was how I learned the skills came in a literal skill tree.

She was overjoyed when she found out that an upgrade for her Power of Destruction, allowed it to negate healing/regeneration for a short amount of time. It cost a staggering one million LP. Granted, the skill was actually an upgrade of an evolved form of Power of destruction, so she had to complete her current tree before getting to it.

All things considered, yes, we'd be here for a while, but I don't think either of us cared too much.

A month later…

"Yesss~ BABY RIGHT THERE~! I LOVE HOW YOU FUCK ME~!" Rias screamed to the high heavens, moaning as she creamed herself on my cock. She watched herself in the mirror, face red and drool escaping her mouth as I held her by her thighs facing the mirror in the bathroom, and rammed into her as I stood. My cock disappeared like a blur inside her cunt, dragging out waterfalls of her clear cum.

"You like that?!" I groaned, nibbling on her ear as I rammed into her. "You like being my personal little onahole?!"

"I LOVE IT DADDY~!"

Yes, yes. We were degenerates. But it was hard not to be.

"You ready for my load!" I groaned in her ear and her sloppy face grew even more elated.

"Yeshh~ stuff me full~! I want to feel it~!" She begged, legs going limp as she came for the fourth time. Expectedly, a clear stream of cum jetted right out of her, drenching the mirror with her fluid.

At the same time, I pulled her fully down and my cock shot right up to her womb, dispensing gallons of jizz straight into her baby room.

"Hehe~!" Rias moaned unintelligibly, looking at her debauched state in the mirror as my cum oozed out of her.

Spoiler

…
Just minutes later, as I was cooking breakfast like I had the habit of doing recently, the sexy redhead crawled on all fours into the kitchen and happily went right for my cock.

She sucked and slurped sloppily, uncaring of the mess she was making as she drained my cum from my balls as an appetizer before breakfast. If I had slightly overcooked the food, she didn't complain, and instead, we ate on our couch while continuing on with the anime rendition of Naruto. After that, it was right back to creating more messes as we fucked where ever we pleased.

"What's your multiplier at now?" Rias asked me as we stood in the laundry room of our apartment.

She bent over, taking off the most recent edition to our sexcapades, a poor excuse for a maid uniform. Poor because it could hardly be classified as clothing. It consisted of a black micro bikini top that only barely managed to hide her nipples and a black bow tie attached to nothing but a ripped-off button-down collar. Similar to the top, her black and white skirt was way too small for her or anyone really and completely exposed her freshly fucked cunt whenever she moved or bent down. Lastly, she wore black-thigh-highs that hugged her legs nicely. Seeing her take it off was sad, but considering all the cum that had seeped into the seams, it needed to go in the washer.

"Ten times now." I shrugged. "I want to go higher but the cost started growing exponentially instead of linearly."

"Things couldn't always stay that lucky huh?" Rias chuckled, pressing a few buttons on the washer and then hopping on it. "The system is a little nonsensical at times." She kicked her feet lightly, vibrating along with the washer as it hummed to life.

"I'm just happy I got this far with the prices being so reasonable." I sighed. Until then it had just been applying the multiplier to the first price of 32,000 LP. Considering I had been making around 11,000 LP a day at base, I was able to level up the multiplier every three days, getting it to its final price of 320,000 LP before it shot up for the 11th level multiplier, to 3,872,000 LP. Bullshit, I know. Well, I really shouldn't complain. I was making 110,000 LP a day now, which meant I'd be able to make the cost for my second race in just a day, and my third in about a week, considering my daily amount plus the weekly quest.

I would soon be a devil-dragon-human hybrid, really edgy and indecisive sounding but the most ideal everything considered. I'd get the option of having a sacred gear while being able to use the magic system of devils, which sounded pretty damn broken by the way. The dragon race was a suggestion from Rias, she said most dragon-type sacred gears were simply better than the rest, and I'd have better affinity with it if I was one myself, good to know.

I was snapped out of my musings by Rias. She found that I was in close enough distance and wrapped her legs around me to drag me to her. She had gotten way stronger. There was no use in her saving up for the upgraded bloodline so she just spent all her LP on her stats. Because of how the system cucked her out of an LP multiplier, we had to primarily use my own. "I wish I knew how the system would quantify my brother's power, it would really help all things considered." Rias sighed, resting her fleshy tits on my head as she kept me close with her legs wrapped around my torso.

"Do you know the best solution to that problem?" I smiled, tilting my head so I could look back at her. "Taking your absolute max estimate, doubling it, and then going for that."

"How very brutish, my love." She said fawningly, bending down to kiss me gently. "I'm afraid I may be unleashing a monster in my world."

"You say that, but you're the one who came up with the plan." I reminded her with a grin.

"Well I had to, how else am I supposed to stop those old devil creeps from trying to take control of my life." She pouted, poking my cheeks in mock anger.

"Ask nicely?" I joked, regretting it instantly as she strangled me with her thighs, and not in the way I liked.

"Spare me." I coughed, tapping her creamy skin until I was finally let go.

"Seriously, if Sona keeps winning her chess challenges she'll be in big trouble too." She pouted.

I thought back, remembering my crimson-haired lover's recounting of her friend. "Think they'll back out of their deal with her?"

"Definitely." She scoffed, clearly irritated. "They don't take Satan Serafall seriously anymore, they'd just ignore her and force Sona to marry Diodora or someone equally as wicked. Sometimes I wish she'd go back to how I heard she was during the civil war."

"Sounds rough, devil politics sound like Hell." I tried to empathize.

"You have no idea." She sighed. "Maybe I should just send you to her."

There was that joke again if it was one. I'd learned not to assume, but in this case, I didn't really know how to ask. At first, it came up when she was talking about her queen, Akeno Himejima, apparently the girl was sure to seduce and hit on me as soon as she found out me and Rias were together. She had said if it got too bad to just bend her over a table and fuck her. I thought I heard wrongly at first, but then I thought back to what I had heard of harems in devil culture. So until I found out how to ask, or experienced it firsthand, there was a significant chance that I'd be engaging in threesomes relatively soon.

"I'm getting hungry," Rias said, leaning off the humming washer and hoisting herself onto my back.

I held her legs, for extra support and began walking out of the room with her as luggage. "Should I cook?"

She put on a dismissive tone, slapping down my suggestion for what to her sounded like a much better idea. "Nah, just finger me while I suck some baby batter out of you."

"Pervert."

A/N: Getting down to the power-building aspect. I want to make this clear, the focus of this fic is smut and fluff. I'm not writing out prolonged battle scenes (maybe one or two) nor am I really brainstorming some well-thought-out and specific abilities that are completely original. No. Some of you may even complain about the whole hybrid aspect, I know it's unoriginal but again, this isn't the type of fic where I need to worry about that. Also, join the discord: /ru6nYfGn39