Today's client is Ms. Nitta, who has come for a body shaping experience. A sweet, modest young woman with fair skin and a voluptuous figure highlighted by her large, soft breasts. With no prior exercise experience and her first time at a gym, she becomes the perfect target for the personal trainer, who feels excitement stirring. He has her change into rental gear, dressing her in tight training wear that accentuates her body lines. She grows self-conscious about how sheer her white tights are and admits she didn't bring sports underwear. The trainer takes advantage of the situation and begins the session with the clothes she has on.
Starting with light stretching, he has her sit on the mat and spread her legs wide for flexibility exercises. Her body is supple, but attention keeps drifting to her F-cup breasts. Lying her on her back, he folds her legs to stretch the back of her thighs and hips. Her light blue panties are slightly visible, and as he touches her buttocks to guide her, the trainer grows aroused. During thigh stretches, her plump labia clearly protrude, further exciting him.
Having her sit on a balance ball for core training, her large ass sways in a way that resembles cowgirl sex. For squats, he instructs her to clasp her hands behind her head, bend her knees, and push her hips back. She struggles, her face strained as sweat begins to glisten all over her body. During sit-ups, she collapses after just three reps, so the trainer steps in to assist. Straddling her body, he pulls her face toward his bulging crotch. Nitta looks uncomfortable and turns away, but the trainer persistently pushes her face into his groin, overcome with arousal.
During prone back extensions with hands on the floor, her thighs and abs twitch from exhaustion. The trainer again moves in to help, embracing her shapely buttocks, supporting her stomach while groping her large breasts. "Ah, that's...!" she gasps in surprise. "This needs loosening up," he replies. He raises her arms, stimulating her nipples while vigorously massaging her soft, jiggling breasts. Pulling up her bra, her beautiful, bouncy tits spill out. "Huh?! Wait, this is—!" she exclaims, shocked. "You're on the experience course, so keep your arms up," he explains, sucking hard on her areolas while kneading her tender breasts. "Mmm... someone might come..." she whispers nervously. "It's a completely private session, don't worry," he insists.
He pulls her face close for a deep, passionate kiss, their tongues entwining. Next, he moves to massage her buttocks, making her go on all fours, kneading her thick, fleshy ass before sliding off her tight pants. Seeing her embarrassment, he says, "It's fine. Aftercare is thorough," and shifts her clinging panties aside, spreading and massaging her ass cheeks to open up her anus. After removing her tights completely, he spreads her legs wide with his hands and begins fingering her pussy. Licking her clit and eating her out, he brings her to the edge—she sweats profusely, writhing in pleasure.
"Let's move on to facial muscle training," he says, making her kneel and take his rock-hard cock into her mouth, thrusting his hips. She sucks eagerly, giving an amazing blowjob. He pulls her head forward, forcing his cock deep into her throat. "Ugh, ugh, ugh..." she moans helplessly. Then he lays her down, removes her panties, and spreads her into a wide M shape. "Keep it open, please." He slides his cock into her slick, wet pussy in missionary position, noticing her legs try to close. He pounds her tight, gripping pussy hard until her abs spasm and she cums.
He immediately pulls her into a passionate embrace, French kissing deeply, then flips her into cowgirl position and makes her ride him. "You're good at this—have you done this a lot?" he asks. "N-No, never!" she gasps. He thrusts upward violently into her M-shaped, gripping pussy. Moving behind her, he enters from the back, slamming into her repeatedly. "Aaaah! N-No, stop!" she cries. He grips her hands onto the balance ball and takes her from behind standing, pounding deep into her pussy. When she pleads for mercy, he sits on a chair and makes her straddle him, guiding her movements. As her bouncing, jiggling breasts sway, he takes her from behind in a seated position, grinding his hips.
For the finale, he switches back to missionary and thrusts rapidly. "Aaaah! I'm cumming!" she screams. Finishing off, he injects his protein—filling her with a creampie of fresh sperm. The experience session ends, and she's already hooked—guaranteed to come back.