If I were to get serious,what kind of sex would she have? Mihina Nagai DVAJ-340

Overview： Tied up behind her back,forced to masturbate behind her friend's back,humiliated at a neighbor's house,and cuckolded... After I saw Mihina's diary,there was no going back. My girlfriend,Mihina,is cute,kind,and an ideal lover. However,she doesn't seem to enjoy sex. One day,I discovered Mihina's diary and learned about her past. Her sexual experiences were written down in detail. I was jealous,but I was also aware of my excitement. I tried out the SM goods I had bought...