While Kenji is busy taking care of his father at home, his older brother and his wife come back for a class reunion. Kenji hates his annoying older brother. His hatred and frustration are directed at his brother's wife, Maika, who offers to help with the caregiving!! Kenji forces his father-in-law to satisfy his sexual needs. Kenji goes wild when his brother isn't looking, and even forces his father-in-law to have shameful sex with him. The relentless sexual demands don't end...