The series 'Jitaku Keibiin' centers on a reclusive, unemployed man who takes on the role of a self-appointed security guard for an apartment building. Using an extensive network of hidden cameras, he becomes a voyeur, secretly observing the intimate lives of the female tenants. His obsession quickly escalates from passive observation to active manipulation. He uses the information gleaned from his surveillance to systematically break down and sexually dominate each woman. The narrative follows his escalating depravity as he rapes, blackmails, and psychologically torments his victims, turning their homes into his personal sexual playground. The entire arc details his descent from a pathetic shut-in to a calculating sexual predator who fulfills his darkest fantasies by violating every woman in the building, using their secrets to force them into increasingly humiliating and perverse sexual acts.