Yumi was having trouble dealing with her nephew Taichi, who was staying with her. Her husband told her to keep a gentle eye on him, but she couldn't hide her irritation at Taichi, who was a student preparing for the entrance exams but was lazing around instead of studying. One day, Yumi discovered Taichi skipping his studies and getting absorbed in watching adult videos. She was furious and ordered the videos to be confiscated. However, when Yumi saw Taichi's secret video, she changed... Her excited expression was like that of a completely different person. Her breathing was heavy, her eyes were bloodshot, and before she knew it, her pants had become stained...