My daughter Yuka, now a college student, brought her boyfriend Tsuyoshi over to study for exams and stay overnight at our house. Tsuyoshi was kind and sincere, and I felt truly proud that Yuka had such a wonderful boyfriend. However, he didn't seem to view me as Yuka's mother, and suddenly attacked me while I was asleep. Although it started forcefully, everything changed in that instant. Each time Tsuyoshi desired me afterward, I gradually became aware of emotions I had kept hidden inside, and eventually began to feel pleasure as a woman. The secretive encounters that followed awakened new feelings within me, creating an intensely seductive and captivating experience.