A brother who doted on his sister. The sister loved her doting brother very much. The brother moved to Tokyo for college and started living with a woman he liked. However, due to his excessive love for his sister, she got fed up and they broke up. He dropped out of university and lost the will to work, becoming a shut-in as his life fell apart. Around that time, their foster grandmother passed away, so the sister moved to Tokyo to stay with her brother. She was thrilled at the thought of seeing her beloved brother again. But instead of finding any trace of the brother she loved, she found a completely changed man waiting for her. Her imprisonment with this despicable brother began,,,
