Three months ago, my father suddenly remarried. His new wife was a woman named Ai, who was close to my age, and she moved in with us. I felt confused and uneasy about the whole situation. Then I found out that my father and Ai were struggling to conceive, and I started thinking of ways to help her. I began to hope that if Ai could get pregnant, I might somehow contribute to that happiness. One day, while lost in these thoughts, Ai suddenly entered my room and started jerking me off. It seemed she had been building up sexual frustration from an unsatisfying marriage, and had decided to have me impregnate her instead. I was completely shocked and bewildered by the sudden turn of events.