A stepbrother over 20 years old, born from my mother's remarriage, commonly known as "kodooji." Disgusting, a NEET, and the worst. One day, an unprecedented flush and an uncontrollable impulse attack my body. I had been dosed with aphrodisiacs... Furthermore, my stepbrother forcibly inserted a dildo with aphrodisiacs... What is this pleasure, even though I hate my stepbrother so much, why is it so enjoyable... Trained by my stepbrother's aphrodisiac-laced dildo, I became a spastic, cumming mess, a broken meat toilet for my stepbrother, repeatedly violated.