In this school life, there's an innocent girl named Ikura Hinano who serves as the class president. She's a shy but dirty little slut who accidentally squirted during class and then skipped school due to embarrassment. After being persuaded by Hibiki's loving words, she returns to school but gets too nervous again and ends up squirting. As her urine flows down, she starts to panic until Hibiki herself releases a powerful stream of piss, laughing off the shame. The scent of their young pussies and pee fills the air, exciting both teachers and students... From that moment on, their urine became sacred water that men couldn't get enough of.