My mundane life as an ordinary math teacher was dull and uneventful. Every day, I taught math to my students and returned home to solitude. Craving even a small thrill in this monotonous routine, I began hoping for something—anything—to happen. Then one day, a flyer in my mailbox caught my eye. It advertised a mysterious service called the "Brainwashing Payment Plan," claiming I could make that one girl I liked obey my every desire. Intrigued, I impulsively signed up. The reason? Her name was Konatsu Kashiwagi. Not the brightest student, but undeniably cute and popular among her peers. Her clumsy, airheaded side only added to her charm—she was someone special to me. I decided to brainwash her. I initially planned to start with the trial option: the "Right Hand Only Brainwashing Plan," but the result exceeded all expectations. Konatsu's right hand was irresistibly drawn to my cock like a magnet, delivering an experience beyond my wildest dreams. This service allowed me to select specific body parts for brainwashing—options included right hand, both hands, both feet, or even her entire body. I subscribed to every single plan, gradually brainwashing Konatsu piece by piece. She seemed completely unaware of what was happening. Hiding the truth, I made her give me handjob after handjob. Each time, watching her right hand move on its own, I was overwhelmed with excitement and anticipation. This experience ceased to be mere fantasy—it became a thrilling part of my reality.