Slender and busty beauty Misuzu Kawanami is a calligraphy teacher who gives brush pen lessons to neighborhood kids. Usually calm and kind, she also has a cocky, arrogant side. One day, her regular students come for their usual calligraphy class, playing pranks on her one after another with ridiculous tricks, gradually provoking her anger. To calm her down, the students offer her some snacks as a gift—but hidden among them is a mysterious drug. Her body heats up and her consciousness begins to blur. She tries to regain composure by taking a quick shower, but her body only grows more sensitive. Unable to resist, she starts masturbating, climaxing so intensely that her pussy juice turns cloudy white. Right after, the students return to find Teacher Misuzu transformed—now aroused and aggressive, exuding erotic dominance. Completely overtaken by lust, she's like a different person, leaving the kids stunned and bewildered.