Shinji Ikari shook his gigantic ass. The huge butt cheeks sloshed back and forth, rippling like they were enormous bags of milk.

"Ooh, Kaworu-san," he cooed girlishly, "hurry up! Stick it in." He licked his plump lips. "I want your dick inside me so bad." He turned his fat head Kaworu's way, causing his bovine jowls and porcine chins to slosh and ripple.

On all fours atop the bed, Shinji more than ever resembled an enormous pig fattened by its owner for a contest. His vast back oozed and folded with jelly-like slabs of back blubber. His enormous belly splayed all around him, spreading out in a bloated puddle of lard, but it had so much heft in its own right that it still lifted him slightly off the mattress. His upper arms' enormous slabs of fat sagged heavily over his elbows and rippled in time to his overall motion.

Kaworu Nagisa smiled at his fat pet. He was naked, his lithe, thin body such an outrageous contrast to the engorged bulk of his boyfriend. Shinji clocked in at 404 kilograms, currently. He was a gigantic pile of lard. Kaworu came in and affectionately patted Shinji's immense right buttock. "Patience, my pet, I must first use my AT Field to increase the size of my penis to your preferred extent."

"Oh, goody, goody," said Shinji with a greedy gleam in his blue eyes. "Make it big, Kaworu-san. Make it long and thick. Extra long, and extra thick." His third chin rippled as he grunted deep in his throat. "I just have to have a huge cock these days, it feels so good being stuffed up."

Smiling, Kaworu stroked his already-large penis. Glowing orange hexagons began to shine around the pale phallus. As Shinji watched, Kaworu's dick began to expand. It grew longer and longer, and with a larger and larger diameter. Soon it expanded past 20 centimeters, and became quite thick indeed.

But Shinji smacked his lips. "Ohh, more, Kaworu-san... make it bigger... bigger... thicker..."

Smiling, Kaworu now grew his penis to comically large size. 25 centimeters, 30 centimeters. 35 centimeters.

"More!"

With a final swell, Kaworu's cock expanded to an outrageous 45 centimeters, and was bigger around than a can of soda. It was more than half as long as one of his legs. He smirked, red eyes glinting. "How about this, my pet?"

"Ohh, yeah..." groaned Shinji. "Put it in, Kaworu-san. Do it now."

With the gigantic cock swaying between his legs, Kaworu walked around to the backside of the massive former Eva pilot. Shinji's butt was more than two meters wide, the huge cheeks like boulders as they oozed and sagged halfway down his lardy thighs. Kaworu walked into Shinji's deep ass crack, guiding the comically-oversized phallus towards the loose, sloppy hole of Shinji's anus.

"Uhn," grunted Shinji as he felt the tip go inside him.

Kawou gripped hold of Shinji's slabs of back fat, and thrust inward.

"Ohhhhh," moaned Shinji in gay delight. Kaworu pulled out, then thrust again. Pulled out, then thrust again. Always deeper, always thicker in, always plunging yet more of the absurd penis into the depths of Shinji's rectum.

Finally, Kaworu was all the way inside, and was thrusting away. Shinji was in bliss. Kaworu was hitting his prostate and its g-spot and triggering an avalanche of delight. The dick was absolutely gigantic, but Shinji had become so fat, and had spent so long being sodomized, that he was able to handle it without a single problem. The obese gay boy was so expanded these days that he probably could have comfortably had anal sex with a horse. The great, big boy loved great, big dicks, as deep inside him as possible.

Thrusting and thrusting. In and out. Kaworu's AT Field functioned as lubricant in the process of sodomy so Shinji had no need for lube. Just a smooth, enjoyable assfucking that the former Eva pilot utterly loved. He was in a state of unthinking bliss. In and out. In and out. He was being brought closer to orgasm... closer... closer...

Splrt

"Murrrggmmgbbllll" he mumbled incoherently as he climaxed, his own tiny penis firing away within the cavernous depths of his fupa and thigh fat. It was so satisfying to climax. It was so great to be fucked. "Ahhh," he sighed contentedly as Kaworu slowly pulled the huge dick out of him. Orange hexagons flared around it as it slowly shrank back down to its normal size.

"I trust that was to your liking, my pet," said Kaworu, stroking Shinji's left buttock.

"So good..." sighed Shinji. "I love big dicks!"

"I worry I have spoiled you for any other man, Shinji-kun," said Kaworu, patting the fat back of the fat boy. "Almost no human being has anywhere close to the penis size you have become used to."

"Oh, Kaworu-san," Shinji cooed, and sighed with lust, "I simply don't want any other guy. Maybe sometimes I lust after them, or dream about them, but..." his fat face gazed over his flabby shoulder, back past the vastness of his bulk, "I belong to you. You own me. I don't really and truly want anyone else."

"Not even Ryoji Kaji?"

"Oh!" A flush came to Shinji's face. He licked his lips. "I do miss Mr. Kaji... I wish he were still around, somewhere." He blushed a bit harder. "He was so handsome."

"Perhaps I could use my AT Field to give you a fantasy of him later, my pet."

"Oh, yes!" said Shinji with a smile on his hoggish face. "That would be great." And he sighed with lust.