Operation 06: Seek II (SM Queen Saki) - S1.E6

This episode is a continuation of Operation 05, and takes place during a sex party commemorating the anniversary of Saki's master's death. Saki presents the guests with a gift: Marino and two other girls (Momomi and Haruka), as their sex toys for the evening. Despite the introduction of new characters, this episode focuses mostly on Saki and her relationship with her previous master. Scenes of Saki reminiscing about her S&M training as a child are interspersed with displays of Marino and the other girls being subjected to humiliation and torture at Saki's hands. As Saki masturbates to thoughts of her deceased master, the three slaves enter the room, armed with bondage equipment, and take Saki back to the main party hall. Here, her current master presents Saki to the party guests for their enjoyment. Saki is subjected to much the same treatment to which she earlier exposed the other girls and is gang-raped; the episode ends with Saki being chained in a cell of her own.