Ady paused to check the address before ringing the doorbell. Considering the bulge he was packing in his pants, he didn't want to surprise the wrong house.

It was the right number, though, and shortly after he rang, he heard a voice from within, soon followed by the door unlocking. The gray wolf was greeted by a somewhat familiar figure: Mystic, the pale, pink-eyed alien girl with a long lion-like tail he had met when his aunt had brought him to work with her. He and his mother had given Mystic an 'enhancement' of sorts, and though her breasts weren't quite the size they had been when she had left the medical facility, they still stretched the t-shirt Mystic was wearing enough that it was a wonder it didn't rip open.

Not that Ady could really talk, considering the way his track pants stretched and bulged out around his own package – on a repeat visit to his aunt's place he'd been the test subject for a new supplement, and it had worked exceptionally well. Well enough that jeans were an impossibility for him unless he got some specially tailored to contain his immense endowment, and while his aunt had helped him get that arranged, it was going to take time for them to be made.

With a small wave, Ady offered a simple "Hi" to Mystic, taking his eyes off her tits for a moment. She was the one who had invited him over, after all.

"Heeeey, Ady!" Mystic replied enthusiastically, "So glad you could make it, come on in." Her own gaze fell to his prominent bulge and – as far as he could tell since her starry pink eyes had no pupils – she stared at them in awe for a moment. "We've got so much to discuss, come here, let me introduce you to my sister."

She grabbed his wrist and brought him inside, closing the door behind him. "Sister?" Ady asked curiously, following along behind her. Every step she took made her enormous cleavage bounce, her breasts so large that he could still see a decent amount of them even from behind.

"Yeah, she's..." Mystic began as she brought Ady into the living room, then trailed off. It seemed like a pretty ordinary living room all things considered, with a big three-seater sofa across from a TV, with bookshelves, a coffee table, pictures on the walls, and a big window at the back overlooking the backyard, with another doorway leading to somewhere else. "Well, she WAS in here. Hey, Gala!" Mystic called out.

"What?" came another female voice from a nearby room.

"Ady's here, come say hi!" Mystic yelled back.

Ady heard plates rattling from what he presumed was the kitchen, and a moment later someone that he assumed was Gala came around the corner and into the room. Like Mystic, she had a lion-like tail and pupil-less eyes that instead looked like they were full of stars, but her eyes were a darker purple as opposed to Mystic's pink. She also had much longer shoulder-length hair, and her body was a pale blue instead of the very faint pink of Mystic. She was also wearing a plain, sleeveless lavender top and some gray jeans, and was in the middle of drying her hands on a dish towel.

"Hey, I'm Gala," she began, "Nice to meet y- hellooooooo theeeeeere..." Her attention had been grabbed by the sizeable bulge in his pants, and she casually tossed the dish towel over her shoulder and back through the doorway into the kitchen. "Okay, now I see why my little sister wanted to invite you over."

"He wasn't even THIS big when I met him," Mystic remarked, grinning deviously.

Ady gave a shrug. "Yeah, my aunt had me help out some more," he told them both. "You should see how big she is now, she took like, a double dose or something after my test."

It didn't appear either of them were listening too closely though, instead glancing at each other and then back at Ady. "So, thanks for coming over," Mystic suddenly told him, gesturing to the sofa. "Why don't you take a seat?"

Obligingly, Ady sat in the middle of the sofa, only for both of the girls to take seats on opposite sides of him, with Mystic on his right and Gala on his left. "So, uh," he began, looking at Mystic and pointing at her cleavage, "Did you need me to, like, top you off or something...?"

"Tempting," she admitted, leaning against his side as Gala put a hand on his thigh, "But nah. Not today, at least. I thought Gala here could use a bit of fun to de-stress, and well, you seem up to the task..."

Nodding enthusiastically, Gala moved her hand onto the bulge in Ady's pants. "More than up to it," she agreed, stroking his bulge before moving her hand up to his waistband. "What do you say?"

A grin crept across Ady's face and he put his arms around both of them, leaning back against the sofa. "Sounds good to me, if you think you can handle it."

Chuckling and tugging his pants downward, Gala remarked, "Don't worry, we starry-eyed are pretty..."

"Stretchy?" Mystic offered.

"I was going to say 'durable' but you know, that works too." Both girls watched as Gala tugged Ady's pants down as the wolf wiggled his hips to help her get them off, revealing a pair of briefs that were struggling to contain the package within, stretched so much that the individual threads were visible. Nothing was left to the imagination, including the outline of something sticking out from the end of his cock; as Gala began stripping off his briefs, Mystic poked a finger against the protrusion. "What's this?"

"You can take them out," Ady told her. As Gala pulled his briefs down, the object was revealed to be the bright pink handle on the end of a string of beads, poking out from his cocktip. The beads themselves were leaving a series of visible bulges in the underside of his shaft, which was hanging over his enormous balls. Already his dick was twitching and thickening, a good two feet long just to start with, and his nuts were each the size of basketballs. "I just put them in there so I wouldn't be leaking pre into my pants all the time."

Gala hefted his cock and stroked it with both hands as Mystic grabbed the handle and started pulling. Ady grunted and groaned as the beads popped out one by one, the bulges in his shaft moving as the beads within were extracted. When the last one came out with a wet pop, a thick gout of pre erupted from the end and splattered across one of Gala's hands and the carpet, and Ady leaned back against the sofa and panted a bit.

Getting up, Gala stared into the gaping tip of Ady's shaft, seeing it starting to close up. "Wow, that's amazing. I wonder if I could...?" she began, gripping his cock just under the head and bringing her hand up to the tip. Shoving her hand into the gaping, pre-slicked orifice easily, she shoved her arm in all the way up to the elbow and made Ady shudder and moan, his cock still growing in size, much more rapidly now. It only took a few pumps of her arm for him to be fully hard and a good thirty inches long, her fist making a prominent bulge in his urethra as she started pushing her arm in deeper and deeper on each stroke.

Mystic, meanwhile, wasn't content to merely watch, bending over Ady's lap and tending to his sack while Gala stroked and fisted his cock. Mystic's hands caressed and stroked those heavy, churning orbs, marveling at their size considering how big they already had been the first time she'd seen them, kissing and rubbing them all over, feeling the heat radiating from them. All the while Gala shoved her whole arm deep into Ady's cock, sending precum spilling down his underside and onto the carpet each time she pulled back out.

"Ohh, I..." Ady groaned out, staring cross-eyed at the ceiling. That was all the warning he gave before his balls clenched, pulling away from Mystic's hands as they unloaded, hitting Gala dead-on, the force of his eruption shoving her arm out from his shaft. She staggered back a little before tightening her grip on his cock with her other hand and standing her ground, taking the huge blasts of his cum directly to her front, most of it spilling off from her and splattering onto the carpet around her feet and his. She was utterly drenched by the time he finished, her clothes soaked with hot, thick cum.

He exhaled heavily as he came down from his peak. "That was good... the beads were teasing me this whole time..." he murmured absently.

Gala licked some of his cum off her hand, giving his cock a stroke. Even after such a powerful climax, he was still hard. "You've got enough left for another round, right?" she asked as she started stripping herself naked, tossing the cum-drenched clothes to the side, revealing the teal-blue nipples on her more modestly sized breasts.

"He came in my tits like four times in a row last time," Mystic remarked, stroking his sack with both hands. "I bet he can do even more now!"

"Oh yeah, definitely," Ady agreed, watching Gala strip through half-closed eyes. He was taken by surprise though when she very suddenly pushed Mystic aside to climb up onto his lap, hands on his shoulders, raising her hips up high to give enough room for his cock to slip between her legs.

"Give me a hand, Mystic," Gala insisted, and Mystic obligingly grabbed the underside of Ady's cock and guided the tip towards her sister's pussy. It really didn't look like it was going to fit, but only to someone who hadn't seen Gala's toy collection. She sank her hips down and his cock wedged against her entrance briefly before slipping inside, spreading her netherlips apart. Both of them groaned out as she descended, more of his shaft disappearing into her, and soon producing a swelling in her belly as she ran out of space for more cock. Not that that stopped her from taking the rest of him anyway, the belly-bulge growing more prominent.

Mystic sat back to enjoy the show as Gala took control and started riding him vigorously, bringing her hips up just enough for the outline of his cock to disappear from her abdomen before slamming her hips back down and taking him into her again. Ady groaned and kept his hands on her sides to help keep her steady, otherwise shutting his eyes and letting her take him for a ride. Every bounce on his lap made Gala's tail and hair sway about, her pussy juices leaking down the sides of his shaft, mixed with some of the stray precum oozing from his cock within her wet tunnels.

"Ohh fuck, this is just what I needed," Gala moaned out – and started to ride him even harder. Without even stopping to grind at the bottom of her thrusts she eagerly slammed her hips downwards and tightened her grip on his shoulders just to give herself more leverage. Ady was a squirming mess as he moaned underneath her, her walls wrapped tightly around his cock from how much he was stretching her. "Come on, big guy, give it to me...!" Gala insisted, panting from effort and trembling in pleasure.

She got what she wanted soon enough; Ady couldn't handle such an intense ride for long and suddenly grabbed her hips and pulled her down all the way. Moaning and shuddering, he held her in place as he came hard, the bulge in her belly rapidly expanding as his cum erupted into her and flooded her womb. Every thick blast bloated her out further, making her cry out as she came along with him, her tightening walls coaxing more cum from his churning, clenching sack. Some of it spilled back out from her and across his own balls, or spraying onto the mess on the carpet, but she refused to yield and valiantly took as much of his load as he could even when her belly was swollen out to an immense size between them.

Only then did Gala roll to the side, pulling off from him and flopping into the empty seat on the sofa. "Oh fuck, that was good," she declared between heavy, panting breaths, resting her hands on her cum-filled belly.

Ady took heavy breaths of his own, his chest heaving, eyes closed right up until he heard Mystic snap her fingers and say, "Hey, you're not done yet, now it's my turn." When he opened his eyes he saw that she had taken the opportunity to strip naked as well, her hands under her massive breasts as she bounced them playfully. "I bet you want to play with these first, huh?" she teased, and moved closer to him, wedging his still-hard dick in between her massive tits.

He nodded to her in response, so she got to work, squeezing her breasts around his cock. With his own cum and Gala's juices covering it, there was plenty of slickness for her to work with, and she was easily able to bounce her breasts up and down along his length. Grinning at him from the other side of his cock, she snuck in an occasional lick at his underside now and then, feeling his dick throbbing against her cleavage.

"I never got to properly thank you for giving me these things," Mystic remarked as she squeezed her heavy mounds around his hot flesh more firmly, closing one eye as his dick fired precum onto her face. "So consider this titjob a sign of appreciation for that!" Grinning as she watched his face contort in pleasure, she continued to pleasure him, enjoying the feeling of more of his precum splattering onto her as it shot onto or over her head, some of it landing on her back and some adding to the pool of jizz on the floor.

But that was nothing compared to what happened when she pushed him to the edge, his moans getting more intense and rapid in the few seconds leading up to it. He bucked his hips and thrusted his cock through her tits as he came hard, and this time his cum shot almost straight up with enough force to hit the ceiling. Most of it splattered off to rain down on the three of them, the sofa and the floor, all while Mystic continued to lift and lower her upper body and her breasts along with it. Every blast of cum he fired upwards made his cock swell out between her tits, and she grinned widely as she felt him blowing his load for her.

Once his orgasm finished she stood up straight, dripping with his cum. "Now, my turn, I want to be just as big as my sister when this is over," she began, turning away from him and bending over a bit to tease him. "And-"

Whatever else she had intended to say was cut off as Ady grabbed onto her hips with both hands and tugged her towards him. She gasped as she felt his throbbing glans press against her pussy and stretch her out on its way in, and then it was her turn to be stuffed full as he grunted and pulled her back. "Oh fuck oh fuck oh...!" she groaned out as he sank deeper into her, feeling him stretching her out; just like her sister she was able to take his whole shaft but only with a very prominent bulge in her belly as a result.

With a lustful grunt Ady moved his hands under her thighs and lifted her up, taking control of this round. Moaning out as she was pulled back down, Mystic grabbed onto his arms just to support herself as he pulled her along his cock like a fleshlight, his pulsing cock spreading her wet tunnels out over and over. Even with her huge breasts bouncing every time his hips met her thighs, his strong arms kept her moving at a steady pace, getting faster and faster as his lust grew, his grunts and groans behind her getting louder.

Being filled so much that the end of his cock made a clear outline in her abdomen was an intense sensation, not that Mystic minded at all, her vision blurring as she lost herself in the moment. Ady fucked her relentlessly, starting to buck his hips upwards to pound into her that much harder, continuing to slam his cock deep into her pussy even as she came and cried out, her vaginal walls tensing around him.

He didn't last much longer than that, however, and with a deep groan he pulled her all the way down to finish inside of her. His sack clenched and pulled upwards once more as he blew another load inside of mystic, every eruption of cum swelling her belly out even further than before. Mystic could barely focus at all as she looked downwards, watching and feeling womb getting flooded and filled; even with some of his cream splurting back out from her, there was still so much that her belly just kept getting bigger and heavier. The feeling was so overwhelming that she lost focus well before his climax ended, going limp in his arms.

He was left panting heavily under her in the wake of his orgasm, eventually pulling her off of him and setting her down to his side once he recovered, his cock finally starting to soften up. "Sorry, don't know what came over me there..." Ady muttered absently, looking around at the mess he had made. Not just of the two cum-covered and bloated girls, but the huge pool of cum on the carpet, and the jizz dripping from the ceiling.

Standing up, he pulled his pants up just enough so that he wouldn't trip over them. "I'm, uh, going to take a shower, is that all right?" he asked, but there was no reply from the two of them as they just panted and groaned. Eventually, he shrugged and muttered, "I'll take that as a yes..." before wandering off to go find the bathroom.