Sister Brainwashing. Father-in-law Who Fiddles With His Daughters' Brains Without Their Permission And Turns Them Into His Own Sex-people. Hikaru Minazuki, Yuika Onosaka

The stepchildren of a remarrying husband are a beautiful older sister Yuika and a cute younger sister Hikaru. 'I want to grope their breasts and asses somehow...!' The stepfather's mind is full of lewd desires. One day, the stepfather learns of a 'Brainwashing Maker'. It's an app that can rewrite and brainwash a target's mind. Using it with doubt, the sisters fight over the stepfather's cock! Fuck each other! Creampie over and over! The brains and pussies of the brainwashed sisters are treated like toys...