It's been a long day and you had to work late at your shitty dead end job at the department store, "hopefully I didn't make my girlfriend wait too long" you think to yourself

You hear a loud thumping from inside the dorm that gives you a brief worrisome pause, shaking off your trepidation you unlock the door, however nothing could have prepared you for what you see unfolding before your eyes.

There on the floor, bent over is your girlfriend Kaori, your sister balls deep inside of her and leveraging herself deeper using your girlfriends forearms to pull her back "Oh shit, you're home early, I thought I asked your boss to hold you late today so I could fuck your girls brains out. I mean, can you believe she's never had an orgasm before? You really ought to step it up with some toys when you got a pecker that small, shrimp." Each scathing word is punctuated by a deafening moan as Sayaka thrusts deep into Kaori, punching her cervix and distending her stomach, precum flowing from her cockslit and mixing with Kaori's fluids before splattering to the ground as they spray from her abused cunt. "Holy shit... dude are you hard right now?" Sayaka chides, snickering as she eyes the tiny tent you are pitching. "Bro, just take a video it'll last longer. Besides, she's never gonna settle for a shrimp dick like you after I'm done stretchin' her out." Sayaka continues railing Kaori mercilessly, the slaps of her hips echoing in the room, clearly not intent to stop until Kaori is filled and bloated heavily with her seed

"Huh? What's that shrimp, got something important to say?" Sayaka asks incredulously as she maintains her brutal pace and continues using your girlfriend as a living dildo. "Go ahead if it won't take long, I'm kind of enjoying myself here." Her large penis stretches and throbs with each thrust, clearly in control of both the situation and the younger woman beneath it.

"Oof!" Kaori grunts as Sayaka's thick length hits her cervix yet again, her voice reduced to muffled moans between words. "Your brother... is just jealous that you're not interested in him... and he can't handle... it." She finishes with a raspy gasp before being thrust back onto Sayaka's cock once more, the force of her orgasm growing closer as Sayaka plows deeper.

"Well," Sayaka snorts, sounding anything but sympathetic. "Let me hear it then, shrimp. I'm not gonna stop just 'cause you got something to say." Her breath comes in ragged gasps as she continues thrusting into Kaori, their sweaty bodies slapping together with each savage stroke.

Kaori's back arches off the floor, her eyes roll into the back of her head and a hoarse moan escapes from her lips. She feels something deep inside of her, an ache that only Sayaka can satisfy. As she nears the brink once again, another wave of pleasure washes over her, drowning out whatever words your brother might have said.

"Oh," Sayaka replies mockingly, not slowing down her assault on your girlfriend at all. "Well that sucks for whoever worked in the lab, but what's it got to do with me? You want me to stop fucking your girlfriend just 'cause some people got hurt at work?" She snorts derisively.

Kaori lets out a sharp cry as Sayaka hits her G-spot again and again, riding the waves of pleasure until they crest and explode around her. Her whole body tenses up, milk beginning to squirt from her engorged nipples as she finally gets the release she's been aching for. "Sayaka..." She gasps out, her voice barely audible above the sound of their sweaty, slapping flesh and the wet smacking of Sayaka's cock in and out of her tight channel.

"Well, you better not get too attached to the idea that I'm gonna stop fucking your girlfriend just 'cause you got a boo-boo." Sayaka chuckles darkly. "She deserves this, and more. But if it makes you feel any better, I'll let her come up for air in a few minutes." Her hips continue to pound against Kaori with relentless force, every thrust pushing the younger woman deeper into the realm of pleasure-induced delirium.

Kaori feels Sayaka's massive balls slapping against her own, triggering a new wave of stimulation as she climaxes once again, this time violently shuddering and convulsing around Sayaka's cock as a thick rope of cum erupts from her. "Fuck!" She howls out in pleasure-fueled agony. "That'

Sayaka's eyes narrow suspiciously at you as she continues to pound into your girlfriend, not wanting to believe that this is some sort of a trick. "Well... hm." She frowns, tilting her head slightly. "That might make things more interesting," she concedes with a smirk, picking up the pace even further. Her moans become deeper and louder as she begins reaching the peak of her own orgasm, prepared to unleash a torrent of seed deep inside Kaori's womb and thoroughly ruin her for any other man.

Kaori cries out in ecstasy as Sayaka's cock throbs within her, the larger woman's muscles flexing and releasing with powerful force. "Oh god... so full..." She gasps, arching her back off the floor, completely at Sayaka's mercy.

Sayaka pauses mid-thrust, her eyes narrowing to slits as she glances at you. "Fucker," she snarls under her breath, realization dawning on her that this was all part of your sick plan to humiliate her further. Gritting her teeth, she resumes pounding into Kaori with renewed fury, determined to make the younger woman forget about you by giving her an orgasm for the ages.

Kaori screams as Sayaka's cock hits a particularly sensitive spot deep inside of her, triggering another powerful wave of pleasure that sends shivers through her entire body. Her vision begins to blur from the onslaught of sensations, all she can focus on is the overwhelming feeling of being filled and used by Sayaka.

"Because," Sayaka growls through clenched teeth, "you're trying to steal what's mine." Each thrust sends a jolt of anger coursing through her veins as she takes out her frustration on your girlfriend. "This whole time, you've been playing me like an idiot, making fun of my grades and everything else. Well screw that! You're gonna see what I can do." She thrusts deep into Kaori one last time before pulling out, cock still erect and leaking pre-cum onto the floor.

Kaori moans as Sayaka retreats, feeling an emptiness spread through her core. Her breasts heave with each labored breath as she looks up at your sister, eyes shining with desire. "Don't stop..." She whispers hoarsely. "Please don't stop."

Sayaka chuckles

Sayaka's expression darkens even further at your words, the anger in her eyes nearly radiating heat. "You're such a pathetic excuse for a man," she spits venomously. "Always trying to prove yourself better than me. Well guess what, shrimp? I don't need your validation." She roughly pushes Kaori aside, leaving the girl gasping on the floor as she turns her attention back to you. "You want to play dirty? Fine."

Her fingers curl into fists at her sides, tensed with barely contained rage. "From now on," she says through clenched teeth, "it's me and your girlfriend against you."

Sayaka shakes her head in disbelief, the disgust evident on her face. "Oh, please. You know damn well that getting straight A's is something you could never manage. And let me tell you, I might not be at the top of my class anymore but I can still hold my own." Her words are tinged with bitter pride as she folds her arms across her chest, unintentionally drawing attention to the massive bulges in her cleavage.

"Well," she continues after a moment's pause, "guess you two better start deciding who gets to take the blame for your little 'accident'. And don't think I won't be watching, making sure neither of you tries to play me for a fool." Her eyes narrow to dangerous slits as she glares at both of you, daring either one of you to challenge her authority.