Satake serves as a studio assistant and cue-card holder at the television station employing news anchor Miki Katsuragi. He catches Miki masturbating in the set's changing room and leverages this knowledge to launch a blackmail campaign against her. His demands for sexual acts escalate from initial private encounters to coercing public acts, including forcing her into outdoor sex within a park. He extends his control through technology, providing Miki with locked panties featuring a remote-controlled vibrator. This device allows him to activate it without her consent, even during live news broadcasts, while simultaneously preventing her from masturbating independently. His exploitation intensifies when he manipulates another male staff member, who previously held professional respect for Miki, into participating in sexual acts with her. To ensure ongoing compliance and prevent resistance, Satake creates video recordings of the coerced sexual encounters. These recordings function as additional blackmail material, further entrapping Miki within the exploitation cycle. His actions directly contribute to Miki's psychological deterioration, culminating in a moment where she stands on a building rooftop contemplating suicide. Information regarding Satake's background, motivations beyond the depicted exploitation, or personal history outside his television station role is absent. His character development remains confined to the progression and escalating severity of his blackmail tactics across the series.