At 47 years old, Chisato Shoda is a woman who has been coerced by her son's friends, with a past that began five years ago when she was introduced to masochism by one of her son's friends. Three years ago, she entered a training relationship with her own son. Since then, she has undergone various forms of domination and discipline—both in her home garden and in the private rooms of young men. This work compiles outdoor training sessions she has endured over the past five years, serving as a recorded chronicle of her experiences. Her story goes beyond mere eroticism, portraying deep psychological conflict and realistic circumstances.