Goku and Bulma's secret fling ignited back in the wild days of Dragon Ball, when Goku was still a scrappy kid with a tail and Bulma a bossy teen genius on a dragon ball hunt. It started innocently enough—her dragging him on adventures, him saving her ass from dinosaurs and bandits. But one night in a cave, after a close call, tension snapped. Bulma shoved him against the wall, yanking down his orange pants to free his thickening cock. 'You've got no idea what you're packing, Goku,' she breathed, dropping to her knees. Her lips wrapped around his shaft, sucking hard as he gripped her blue hair, hips thrusting instinctively. He face-fucked her sloppy, balls slapping her chin until he grunted and unloaded—thick ropes blasting down her throat, spilling over her chin onto her budding tits. She swallowed what she could, wiping the rest with a smirk. 'Our little secret, monkey boy.' From then on, they'd sneak off during quests: her blowing him in the woods, him pounding her pussy bent over a rock, cumming deep inside before pulling out to coat her ass cheeks.
As Dragon Ball Z dawned, Goku grew into a muscled powerhouse, married to Chi-Chi, but that didn't stop the itch. Bulma, now hitched to Vegeta and Capsule Corp's queen, still craved Goku's raw energy. They'd slip away at gatherings—World Martial Arts Tournaments, training sessions at Kame House. One afternoon, while Vegeta sparred with Piccolo, Goku cornered Bulma in the lab. 'Missed this tight hole,' he growled, flipping up her skirt and slamming into her pussy from behind. She braced on a workbench, moaning as his massive dick stretched her walls, pistoning fast and deep. Her big boobs bounced free from her top, nipples hard as he reached around to pinch them. He switched holes mid-thrust, burying into her ass, the tight ring gripping him like a fist. Bulma pushed back, ass cheeks rippling with each slap. 'Fuck my ass harder—fill it up!' Goku roared, flooding her bowels with hot cum, then yanking out to spray the rest across her face and heaving breasts, glazing her skin in sticky white. Even as her belly swelled with Trunks, she didn't stop. Pregnant and horny, Bulma lured him to the gravity chamber. 'Vegeta thinks it's hormones,' she laughed, on her knees again, throat bulging around his cock as he skull-fucked her swollen form. He came buckets down her gullet, then bent her over, careful but relentless, railing her dripping pussy until she squirted, before dumping loads in her ass and painting her pregnant tits.
Dragon Ball Super ramped up the chaos—gods, universes, endless battles—but Goku and Bulma's hookups burned hotter. Bulma's curves had ripened: massive tits straining every outfit, ass fuller from years of Capsule Corp feasts. During the Tournament of Power prep, while everyone trained, she'd text him: 'Briefs closet. Now.' Goku phased through the door, cock already hard. She stripped fast, shoving her tits in his face. 'Suck 'em—bite if you want.' He latched on, teeth grazing nipples as she stroked his veiny length. Bulma dropped low, mouth devouring him—tongue lashing the head, cheeks hollowing on deep sucks. Saliva dripped down her chin as she gagged herself, eyes watering. Goku pulled her up, impaling her pussy on his lap in a chair, her walls clenching around every ridge. 'So wet for me—always ready,' he panted, bouncing her hard, her ass slapping his thighs. She came screaming, juices soaking his balls, but he flipped her, spreading her cheeks to plunge into her ass. The friction built fast; he hammered until her hole winked around him, then erupted—cum pumping deep, overflowing to trickle down. Pulling free, he aimed at her face, jets hitting her tongue and lips, then her big boobs, ropes draping the curves like icing. Later, when Bulla was baking in her womb, Bulma waddled to him during a barbecue. 'One quickie—Vegeta's grilling.' On the grass, she rode his face first, grinding her pregnant pussy on his tongue until she flooded his mouth. Then she impaled herself reverse cowgirl, ass taking his full length, tits flopping as she bounced. Goku thrust up, filling her ass with seed, then her mouth as she sucked him clean, swallowing before he jerked the last spurts onto her swollen belly and breasts.
By Dragon Ball GT, time twisted everything. Goku, shrunk to a kid's body via the Dragon Balls, retained his adult mind and insatiable drive. Bulma, older but still a bombshell—silver streaks in her hair, tits even larger, body toned from tech gadgets—couldn't resist. Vegeta was off-planet, kids grown; she found Goku in the woods training. 'Look at you—small but still hung like a horse,' she teased, peeling off his gi to reveal his unchanged cock, rock-hard and throbbing. He blushed but grabbed her waist, pulling her down. Bulma straddled his tiny frame, guiding his dick into her mouth first—lips stretching around the girth, bobbing as if he were full-sized, throat working to take him deep. 'Tastes the same—salty and wild,' she murmured, slurping until he bucked, cumming straight down her throat, excess bubbling at her lips. She mounted him next, pussy engulfing his shaft, her weight pressing him into the dirt as she rode slow then frantic, walls milking him. 'Fuck—feels bigger like this,' she gasped, tits smothering his face. He sucked a nipple, hands kneading the soft flesh, as she ground her clit against him, orgasming with a shudder. Flipping to doggy, she presented her ass; Goku knelt behind, tiny body slamming forward, cock reaming her hole deep. Her cheeks jiggled with each thrust, the angle hitting new spots. 'Deeper—wreck my ass, Goku!' He did, pounding until he buried and unleashed, hot cum flooding her depths, leaking out as he withdrew. For the finale, she knelt, face upturned, tits thrust out. Goku jerked his slick cock, spraying across her features—eyes, nose, mouth coated—then down to her massive boobs, painting the peaks and valleys white. Bulma licked her lips, scooping globs to suck clean. 'Friends forever, huh? No matter the form.'
Their bond endured through timelines, a hidden fire amid the chaos—Goku's endless stamina meeting Bulma's unquenchable curiosity, always sneaking, always exploding in raw, filthy release.