A female announcer who was raped, a four-part crying chain

The four beautiful female announcers at the peak of popularity are Shizuku, Sumire, Mio, and Hitomi. Yoshimura, a corporate yakuza who is targeting them, plots to use them as entertainment slaves. Yoshimura lewdly manipulates the four of them in a chain of rosary-like threats, centered around Shizuku and Sumire sisters...