My mother remarried, and on the surface, my days were bright, fun, and fulfilling. Except for one thing... I never thought it would turn out like this... Five years ago, my father-in-law asked me for sex, and I couldn't refuse, so I gave in. I can't tell my mother no matter what... If she finds out, our family will fall apart... From then on, my father's persistent sexual outbursts continued. If I could just endure that, we would have the perfect family. Even when my family went to a hot spring on my graduation trip, he would sneak away from my mother and perform sticky cunnilingus on her in the bath or in her room while she was sleeping, and then insert himself as he pleased. Sadly, my father-in-law's cock, which I hate so much, has slowly become accustomed to the inside of my vagina and now it fits perfectly. Our bodies are so compatible that I cum unwillingly over and over again. In front of my mother I smile and act brave, but in secret I'm a fleshlight for my old man; I shouldn't feel anything, I shouldn't feel anything, it's a trip meant for me...the worst immoral orgasm in history. Mom, I'm sorry I'm such a naughty daughter.