Ten years have passed since my father passed away. My mother, who raised me alone, suddenly brought home her new husband. To be honest, I wasn't that surprised. No, I was more happy. However, I was 24 years old, which is a delicate age, so I was a little resistant to living with an old man I had never met before. At the time, I felt that way, but my mother's new husband was actually a bad man. My stepfather changed drastically after he was laid off and lost his job. He became addicted to alcohol every day and started to abuse my mother. My stepfather was an alcoholic who didn't look for work. My mother increased her part-time work and supported the family. Of course, I also contributed a salary, but my mother continued to protect this man. One day, I saw a shocking sight. I came home from work and found my stepfather urging a stranger to rape my tied up mother. My mother was reluctant, but she seemed to be writhing in pleasure that she couldn't resist and climaxing many times. I was speechless, but I couldn't take my eyes off the scene. That night, I somehow managed to get through work and confirmed that my father-in-law was asleep, and asked my mother about what happened that day. My mother seemed drunk and said, "I'm sorry I'm such a mother." I hugged my mother and said that it wasn't true. Then my mother kissed me, said that she would make me feel good, and gently put her hand on my crotch, which made me feel confused...