Made/written by Songbird567, posted with permission.

Rias waddled down the streets of the underworld, her body bouncing and wobbling with her lumbering steps. She sighed heavily as waddling, along with movement in general, was a labor she preferred to avoid these days. Not because it was difficult, (thank goodness for demonic strength) but because it was exercise that burned calories, something she quickly grew to abore. However, after she looked to her left and saw Issei's burning pink face it felt worth it. Her lips curled into a smile as she reached out a soft hand to hold his. "Oh Issei~" Rias cooed before pulling the boy close, his cheek pressing against one of her bodacious breasts, the massive mammary trapping his head between it and her large meaty arm.

It had been about a week since Rias took her peerage on a vacation to her home in the underworld. Since then the girls had gorged themselves silly while each getting the chance to take Issei out for a personal date. Today just so happened to be Rias's turn, and she wanted to start it at an all you can eat buffet.

The devil had quadrupled, maybe even quintupled in size from her formerly curvy size. She had also elected to wear less and less clothing as time and her body progressed. Even in public streets, she chose only to wear a minuscule red tube top which barely acted as a bra, and a matching pair of black booty shorts, which were swallowed by the posterior the tried to cover, barely functioning as a pair of panties. Aside from these two garments, she wore nothing visible which means she left plenty of bare skin exposed to the world.

Rias's most notable assets would have to be her breasts, belly, and butt. Each asset struggled for dominance yet also offered their own benefits to Rias, and to an extent Issei. Her breasts had bloated to the point they were five times their original size. Massive lumps of firm, supple fat that resisted the tube top that contained them, her nipples almost visible. A deep valley of exposed cleavage billowed outward and rolled over and under the top of the fabric as everything below the garment was left to hang out and rested atop the shelf of her belly. While they did consume a great portion of Rias's field of vision, not that it mattered with her devilish senses, and were rather unyielding when it came to jiggling and bouncing, they made up for this in the fact of how much Issei adored and fawned over them. Rias loved seeing the object of her affection happy and if a huge pair of tits he could bounce, kiss, and use as pillows made that possible then she would keep them. Also, it wasn't as if she didn't derive pleasure from any of those activities herself.

Then came Rias's belly, a hefty mass of fat and blubber that dangled down to her knees, violently jiggling with every step. Heavy, huge, and huggable, the gelatinous glob was almost constantly stuffed to the brim with goodies. With so much money to throw around, Rias always made sure she and her girlfriends/harem sisters got plenty to eat. Plus it was another way to tease or smother Issei and provided a soft mass for him to sink into during hugs. Then there were the added benefits of simply propping Rias's perky boobs up and holding the vast quantities of food she consumed. Practical for everyday life and for added fun on the side.

Finally, Rias's ass and hips had been graced with bonus mass after all her binging. Lounging on an ass so comfortable that it didn't matter how many chairs or couches were crushed beneath it. Two padded cheeks of supple fat that bounced and wobbled with her every step. Not a single visible muscle beneath them, just pure unrelenting lard that billowed over the top and bottom of her booty shorts, exposing her red panties.

More skin was left revealed than was concealed by the shorts which seemed ready to depart this mortal plane at any second, slivers of butt blubber flowing out of the various and growing tears on them

While Rias boasted considerable mass in these three assets that didn't mean she wasn't padded from head to down. Beautiful and squishy cheeks, a thick roll of fat over her neck, pillowy arms that were practically made for hugging and snuggling, heavy love handles, plump rolls of back fat, and thighs capable of saving and taking lives.

Issei had been walking beside Rias, but gradually began to linger behind as he was too enamored with his master to even walk properly. His jaw was slack, his eyes glued to her wobbling frame, and his blood content severely lacking. "I'm the luckiest man on earth~" He whispered to himself as he paid close attention to the gelatinous texture of Rias's behind.

"Issei~" Rias chided and looked over a fat, padded shoulder. "If you don't manage to keep up then I won't be waiting for you. I'm practically starving and while I'm willing to enable your perverted nature, I won't let it get in the way of my gluttonous one."

The duo soon found themselves in an empty buffet, Rias settling into her two chairs as Issei set to work gathering every morsel he could. He presented it to Rias and settled next to her excitedly.

Rias smiled and patted Issei on his head. "Thank you very much, Issei." She doted on him like one would a puppy. Without wasting anymore time Rias sank her teeth into a juicy burger. When one ate as much as she did they became more skilled at it. This was evident as it only took three large chomps to decimate the first burger. Then without missing a beat, she scooped up two slices of pizza.

Issei just sat beside Rias, slowly eating from a plate he prepared for himself. Watching the girls eat didn't really set off his perverted radar, just seeing them happy made him happy, but the way that Rias seemed to bounce and jiggle even while sitting still was more than enough for him. Her breasts moving as she leaned forward to grab more food, the squeezable fun bags just begging to be toyed with. Then there was the way her arms seemed to be equally active. As the heavy limbs reached out for more food they jiggled and swayed like bags of jello. Issei didn't want to inhibit Rias's ability to stuff herself, but that didn't mean he couldn't lean against her plump side. Nuzzling his face against her arm fat as his right hand firmly gripped her love handle.

Rias was caught off guard by this but didn't mind in the slightest. She even wrapped her right arm around Issei's shoulder, squishing his face and burying his head between the pillowy arm fat and her globular boob. Rias did rather enjoy being so much larger than Issei. It was a strange feeling, but one she couldn't get enough of sometimes and actually quickly began to enjoy. That she had to continually grow larger as an edge on the other girls, especially Akeno, was a bonus. One that she enjoyed with pleasure and gusto.

Rias had momentarily distracted herself and with a huff, she grabbed a large cup of soda. Placing her lips to the rim of her glass and tilting it up, Rias began to chug the fizzy drink. She didn't stop until almost every drop had passed her lips and flowed down her throat, a few stray drops falling into her fat folds, never to be seen again. Moments after her stomach began to groan and she parted her lips to let out a booming, "UUUUURRRRRRPPPPPP!" that rattled the cutlery on the table. "Phew, excuse me Issei." Rias apologized and rubbed her still hungry belly soothingly. "Hmm now, what next?"

Rias huffed and puffed as she slowly lumbered down the hall, her immense and currently nude form depending on Issei's help just to stay upright. Her binging at lunch had left her overstuffed, her clothes shredded long ago, and the long waddle back to her home had her exhausted. In her dazed state, Rias nuzzled her flabby cheek against Issei and cooed softly. "Thank you for your help Issei..." She murmured and lazily placed a smooch on his cheeks."I had a wonderful time, I love you."

Issei blushed and a wide smile spread across his face. "I love you too Rias," He replied and tried to keep Rias upright which was far from an easy task. Yes, he had used his boosted gear to double his strength a few times. Now while her weight wasn't the issue, just the shape and size of her body was. His hands simply sank into Rias's fat rolls, and she wasn't doing much to help Issei out. Still, he led her to their shared room and helped her to bed, which audibly groaned and visibly leaned heavily under her, though Rias's grip on Issei was tight, and so he was stuck in bed with her, her gargantuan mass laying on top of him. His lithe body pressed to her immense form, soft arms wrapped tightly around him, and his face stuffed between her cleavage, while her face leaned atop his forehead, her chubby cheeks squishing around his temple. "Not exactly tired right now, but I won't say no to a little cuddling~" He nuzzled against his master and the love of his life, a hand slipping around her to gently caress her crimson hair while the other stroked whatever it could reach of her shoulder/side area. His eyes slowly closed as the warmth that radiated from Rias threatened to lull him to sleep until...

"BBBBBBOOOOOOOOUUUUUURRRRRRRRPPPPPPPPP!" Rias let out a massive belch that shook the room and Issei to the extent that a painting fell from the wall. "...Excuse me."

"What?"

Rias' deep snoring and the sounds of her guts digestion was his answer.