After being a NEET for 7 years, the brother's twisted emotions run wild! The warped love he has harbored for his younger sister since childhood intensifies. Turning anger, hatred, and frustration into sexual desire, he rapes and abuses her! Using a homemade machine vibrator, he trains his sister to be a sex slave. After repeated internal ejaculations, the sister becomes 'drowned in pleasure, covered in semen,' losing consciousness and falling into the role of a 'flesh sex doll sister'! 'I'll fill your womb with plenty of genes from your 'failed' big brother...'
