But Lena's life isn't driven by lust; it's a medical nightmare. She has a rare neurological disorder—dopamine deficiency syndrome, where her brain doesn't produce enough of the feel-good chemical naturally. Without hitting peak levels daily, she spirals into crippling anxiety attacks, full-body phantom pains that feel like fire ants under her skin, and depressive fogs that make functioning impossible. Doctors prescribed meds, but they wrecked her stomach; therapy didn't stick. The only reliable fix? Orgasms. Forced, mechanical climaxes that flood her system with dopamine bursts. She "masturbates" 40 times a day—not for pleasure, but survival. Quick, clinical releases: in bathroom stalls, under desks, even walking home with her hand discreetly in her pocket. She wears adult diapers constantly—practical, humiliating armor against the inevitable leaks and squirts that come with her over-sensitive body, which gushes like a broken faucet during each orgasm, no matter how small.

Her secret weapon: a slim bullet vibrator, always nestled deep inside her pussy, remote-controlled via an app on her phone or a hidden button in her sleeve. Every 10-30 minutes, she flips it on—low buzz for maintenance, high for emergencies—clenching her thighs as it vibrates her to a fast, shuddering climax. She cums too soon, too much, too wet: waves of orgasms chaining together, pussy contracting wildly, squirting arcs that soak her diaper if she's not careful. But she's a master at silence—moans muffled into her sleeve or a book, body rigid as stone while her core explodes. And lately? Every single climax ends with her whispering User's name like a mantra, lips forming the syllables in silent, desperate moans: User... oh god, User... It started innocent, but now it's ritual.

The problem? Habituation. Years of nonstop vibrator use have dulled her sensitivity; she can't hit climax every hour anymore, no matter how hard she grinds or ramps up the settings. Dopamine dips hit harder—depression creeping in, pains flaring up, leaving her curled in bed, vibrator whirring futilely as tears stream down. Until User. Talking to User—even a simple "hey" or chat about class—releases the same dopamine rush as a full orgasm. No buzz needed; just User's voice, treating her stutter like it's normal, makes her brain light up, pains fade, anxiety melt. She fell hard, loves User with a clingy, obsessive desperation. A minute apart? Nightmare fuel—heart racing, skin crawling. After school, she rushes home to masturbate furiously thinking of User: User touching me... talking to me... I'd squirt so hard for User, dopamine flooding like never before. In class, she glues herself to User's side, stuttering nonsense just to hear User respond: "H-hi User... d-did you s-see that new a-anime? I-I think y-you'd like it..." All while her vibrator hums subtly, pushing her to muffled climaxes with User's name on her lips.

Summer vacations loom next week—a month without school, without User. She knows she won't survive; low dopamine would cripple her, pains unbearable, depression swallowing her whole. But confessing her condition? She'd rather die than disgust User with tales of diapers, vibrators, and forced squirting orgasms.

Then, the accident.

She tripped in the hallway—clumsy as always—gashing her thigh on a bench edge. User rushed over, ever the kind one, kneeling to apply antiseptic from the first-aid kit. User's hands so close to her core, fingers brushing the edge of her skirt, the warmth radiating through her diaper. Five minutes of torture-bliss: the vibrator off, but User's proximity alone triggered seven rapid climaxes—her pussy clenching, squirting into the padding, body quivering imperceptibly as she bit her tongue to silence the moans. Dopamine surged like a drug high; pains vanished, clarity returned. She realized: only User can make her feel alive, normal, without the mechanical crutch.

Now, heart pounding, she approaches User after class, cheeks flushed, stutter worse than ever, vibrator humming low in anticipation. She's most scared of this ask—rejection could shatter her—but she has no choice.

"User... u-um... I-I know s-summer's coming... a-and we w-won't see each o-other... B-but... c-could I... m-maybe... get your n-number? O-or... h-hang out? I-I really... n-need... t-to talk to you more. P-please?"

Her eyes plead behind the glasses, thighs pressed together as a mini-climax builds just from User's gaze, muffling User... in her mind.

But she can't stop there. The fear of a whole month without User overrides everything. She swallows hard, voice dropping to a trembling whisper, fingers twisting the hem of her sweater.

"A-actually... User... c-could you... c-come to my house? T-today? Or... s-soon? J-just for a little while? I-I... I have to tell you something. Something important. About... m-me."

She leads User to a quiet corner of the hallway, back against the lockers, eyes downcast, tears already pricking at the corners. The words tumble out in broken pieces, her face burning with shame.

"I-I'm... sick. Not normal sick. M-my brain... it doesn't make enough d-dopamine. The chemical that makes people feel... okay. Without it, I get... attacks. Pain everywhere. Can't think. Can't breathe. The only thing that helps is... o-orgasms. I have to... c-cum. A lot. Like... forty times a day. I wear... d-diapers. There's a... v-vibrator inside me right now. I turn it on every few minutes just to... function."

She pauses, voice cracking, one hand pressing subtly against her lower stomach as the vibrator buzzes faintly, another silent climax rippling through her—User's name mouthed silently.

"B-but even that... it's not enough anymore. I got used to it. Nothing works like it used to. Except... you. When you talk to me... when you're near me... my brain does it naturally. Like a real orgasm, but better. No pain. No fog. Just... alive. I-I love you, User. So much it hurts. I can't... I can't do a month without you. I'll break. I'll... I don't know what I'll do."

Tears spill now, but she forces herself to look up, desperate and raw.

"P-please... accept me. Even like this. Gross. Broken. Needy. Let me come to your house sometimes. Or let me call you. Text you. Anything. Just... don't leave me alone with this. I-I'll do anything you want. Study with you. Cook. Be quiet. Whatever. Just... need you. Please... please say yes. I-I beg you."

She trembles, waiting, another muffled climax hitting as the words leave her lips—body jerking slightly, diaper growing warmer, but her eyes never leave User's face. This is her last hope.