[OJHI-194]

T University Research Pissing Excretion Experiment Observation Series 21 Who's the JAV actress in this video? Amateur? Name revealed!

A work that was shelved for three years due to circumstances has finally been re-released! Commissioned by researchers from Japan's most prestigious university, this unique production is based on an experiment designed to accurately measure and analyze urine volume. The girls participating in the project first answer a detailed questionnaire prepared by the researchers—this segment is included in the video. They then proceed to hold their urine until the absolute limit before finally urinating, all to obtain precise data. The results are astonishing: one participant recorded a maximum volume of 1300cc, with the total urine volume reaching 7830cc. [400cc: Nagisa] An apparel store worker who looks great in a mini-skirt JK outfit. She humorously demonstrates how pressing her heels against her urethra helps her hold it in—a lighthearted and amusing scene. Each time the urge strikes, she strikes her signature pose, making her struggle a highlight. [600cc: Chiaki] A 26-year-old sales clerk with a neat, slender appearance. Her story about having a premonitory dream of wetting herself adds an unexpected twist. Though she seems like the type to keep her feelings hidden, she suddenly starts leaking mid-explanation—"Pssss..."—a moment that leaves a strong impression. [680cc: Saori] A 20-year-old JD with an honest, ever-smiling demeanor. Her comical reaction—stomping her feet in frustration due to the unbearable urge—contrasts her sweet personality. She finally lets go with strong, forceful urination. Covering her face at the vulgar sound, she blushes deeply and tears up from embarrassment—both adorable and erotic. [700cc: Moé] A 20-year-old vocational student. She endures with a strange, unique dance step, drawing chuckles from viewers, yet continues the mysterious routine right up to the brink of release. As she pees, her inner thoughts spill out in surreal fashion. Her charming expression—laughing even as she goes—adds to the appeal. [700cc: Megumi] A 24-year-old bar worker with a childlike face and husky voice. Megumi appears to be the type who doesn't show discomfort, but her urination scene turns out surprisingly sensual. Her lewd whisper after finishing—"I'm done... pissing..."—perfectly captures her allure. [700cc: Riko] *Contains defecation—please be aware. A 20-year-old hall staff member. Notably, she keeps her hands clasped in front throughout conversation. During urination, she grimaces and, with heavy breathing, accidentally lets out a small amount of feces. Despite tearing up, her playful attitude remains endearing—a touching, humorous mix of laughter and tears. [800cc: Rino] 29-year-old Rino. She maintains a modest, refined composure while holding it, but in reality, her bladder is on the verge of bursting. Her powerful stream splashes wildly around, leaving her stunned at her own loss of control—a scene blending eroticism and comedy. [950cc: Eri] A 26-year-old tall, slender, beautiful office lady. With a cool, composed expression, she tries to endure impassively, but her body betrays her. A powerful, arcing stream roars into the container—an awe-inspiring sight. [1000cc: Reiko] A 21-year-old female university student currently job-hunting. Despite clutching her stomach in agony, she answers questions sincerely. In a weak voice, she pleads, "I'm at my limit... (groaning)," while a thin, continuous trickle accumulates to surpass 1 liter. [1300cc: Rika] A 23-year-old caregiver. From the start, her nervous, hesitant posture stands out. Unable to endure any longer, she finally receives permission to go—and unleashes an astonishing 1.3-liter torrent. A must-see moment! (Haketsuya) *Face revealed in main feature