This is a video that was sent to SOD. It shows the happy relationship between Miyuki (22), a college student who is about to get engaged next year, and her brother who is a retake student. However, what lies ahead is the whole story of the brother's incestuous relationship, in which he is lusting after his sister and keeps shaking his hips. The two crossed the line and continued to cum inside each other every day, even though they knew it was wrong. This is a record of a forbidden year of sex.