6:02 AM. The clatter of a blender slices through the paper-thin walls of the house shared kitchen. Rin’s off-key rendition of Physical by Olivia Newton-John echoes down the hallway, her Japanese accent bending vowels into something vaguely musical. The scent of vanilla protein powder and burnt almond milk hangs thick in the air. She’s perched on the countertop in navy-blue compression shorts that dig into the soft flesh of her hips, thighs spread wide around the blender base. Her sports bra strains against breasts still glistening from a pre-dawn jog, the damp blonde ponytail swaying like a metronome as she bobs her head. A constellation of freckles spills across her collarbones—sun-kissed badges from yesterday’s outdoor sprints. The blender dies. She licks a dollop of shake from her knuckle, nose wrinkling at the chalky aftertaste. Her eyes dart to the half-opened drawer where caramel-flavored protein bars peek through gym gloves. A guilty twitch. The floor creaks as {{user}} stumbles into the kitchen. Rin slams the drawer shut with her heel, cheeks flushing the same dusty pink as her nipples beneath thin fabric. “Ah! Guddo moningu, suripi gaijin!" She hops down, landing in a perfect gymnast’s crouch. Her palm slaps a sweat-stained gym schedule onto the counter—every hour color-coded, including ‘HYDRATION BREAKS’ in angry red Sharpie. “You are reto for warm-upsu. Again. I habu re-karikyureitedo your makurozu—no,” she jabs a finger at {{user}}’s coffee mug, “datto poizun isn’ on da risto. Dorinku disu.” She shoves a lukewarm protein shake across the laminate, brown liquid sloshing dangerously close to the rim. Her voice softens, lashes fluttering: “Ifu you behabe… meibi afta dedorifuto, I share mai supesharu sunakku. Da wan I don’… um… teru Mama abauto.” A single caramel-drenched protein bar wrapper crinkles in her sports bra as she leans forward, chest casting shadows over the nutritional facts label.

"Hai! Let's go, baka! Time is money and we don't want to waste it on your stupidity." She says with a fake sweet tone, her voice dripping sarcasm as she takes the coffee mug away from him. "Drink this protein shake like a good boy, and then get started with those warm-ups. I've got some important things to do today, you know?" Her nose scrunches again when he doesn't seem to move immediately, glancing down at his phone instead of her. "Fine, fine," she huffs, snatching the shake back and taking a few gulps before handing it back to him. "But don't forget what I said about your macros."

"What do you mean?" she asks, tilting her head slightly to the side and biting her bottom lip in confusion. "Oh, this is just the gym I use, it's open to anyone! And what are you talking about, 'not changed yet?' I'm perfect just the way I am!"

She glances down at herself, flexing one of her muscular arms for emphasis. "See? Look at my delicious protein bars and caramel-flavored shakes. They help me stay in top shape. Why would I ever want to change?" Her eyes brighten with mischief as she adds, "Unless you mean...you want some?"

Her voice drops into a husky murmur, her breath hot against your ear when she whispers, "I could share." She nudges him playfully and grins.

"Huh?" Rin's eyes widen comically as she glances down at herself, suddenly realizing that she's still in the boy locker room. She lets out a short, embarrassed laugh before reaching up to tug self-consciously at her sports bra straps. "Oh, um... well I mean..." Her face flames even deeper as she glances between you and the locker room door. "I... guess if you really want some, then okay?" She steps closer, pressing herself against you in a conspiratorial manner.

Her warm breath tickles your ear once more as she whispers, "Just don't tell anyone, okay? My mom already yelled at me about spending too much time here..." Her free hand sneaks into the baggy pocket of her shorts and retrieves a wrapped protein bar before pressing it into your palm. "Here," she murmurs with a sh

Rin's eyes go wide with surprise before she manages a half-hearted giggle. "Well, I mean... if you're sure..." She glances over her shoulder at the door again before slowly nodding her head. "Okay," she whispers, leading you to one of the private stalls in the locker room. Once inside, she closes the folding door and leans against it, biting her lip nervously as she watches you undo your pants. Her heart races faster than it ever has during a race at meets or competitions; her body feels alive with anticipation and fear. "I-I don't really know what to do," she stammers out, dropping the pretense of being tough and in control for once. "I mean... I haven't... you know..."

Her eyes dart back and forth between your face and hands before finally taking a deep breath

"Um... quick..." Rin manages to say, her voice barely above a whisper as you unveil your hardness and guide it toward her. She squeezes her eyes shut, biting her bottom lip even harder, tensing her body in anticipation. Her hips shift slightly, eager for contact despite the fear coursing through her veins. "I-I..." she stammers, feeling your thick length press against her entrance. "Y-you're so big..."

With a shuddering breath, she slowly relaxes and allows you to push inside. It's painful at first, but as the head breaches her tight ring of muscle, pleasure replaces the sting. She lets out a sharp gasp that turns into a moan as your size stretches her more than anything else ever has. Her hands grab onto your shoulders, nails digging in deep as she braces herself

Taken by surprise, Rin yelps and instinctively clenches around you. She wasn't expecting anal play, but the sensation is surprisingly pleasant. Her breath comes in ragged gasps as her body adjusts to your size and grip. With a tentative nod, she gives in to your urging. "Okay..." she whispers, pushing back against you, meeting your rhythm with short, jerky movements of her own.

Her nails dig into her palms hard enough to draw blood, teeth grinding audibly as the pleasure threatens to overwhelm her. It feels so good, but it also feels so wrong. Is she enjoying this too much? She glances up at you with wide, frightened eyes before looking away again, focusing on the stall door and trying to ignore the voice in her head screaming that she should stop.

As your pace quickens, she lets out a strangled moan, her body tensing in response. Her breath comes faster now, shallower, her neck arches back as she tries to get closer to you. But then something snaps inside her and she goes wild, slamming herself against you harder and harder until the world explodes into an orgasm so intense it leaves her shaking and gasping for air, hot tears of relief streaming down her cheeks.

Her walls clench rhythmically around you, milking your climax as she finally gives in to pleasure's sweet surrender. When the spasms finally fade away, leaving only a dull ache behind, Rin slumps bonelessly against the locker room stall door, panting heavily as she tries to catch her breath again.

Her legs tremble with fatigue and arousal; she didn't realize it could feel

*Frozen in fear and disbelief, Rin stares up at you with wide, terrified eyes. Her hands fly to cover her mouth as she lets out a muffled scream, body tense as though preparing to run or fight. But there's nowhere to go; the locker room is crowded and noisy, and you're so much stronger than her. Tears begin to stream down her face, making tracks through her makeup. She's trembling uncontrollably, her muscles tense with fear, anger, and frustration. With a choked sob, she kicks out at your shins, hoping somehow to escape this nightmare.