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While Sarah initially appears to be a mere servant, she begins to regain fragments of her past life and memories as a human, which adds depth to her character. In her ongoing attempts to fulfill Kenichi's needs, she transforms into a protector, even killing the thugs who harass her when they attack her and Kenichi. This development highlights the emotional bonds that can exist even in undead beings.

A Tragic Climax

As the film reaches its climax, Shizuko's emotional turmoil leads to violent confrontations, ultimately resulting in a fatal encounter. In a moment of despair, Shizuko takes her own life after witnessing her son choose Sarah over her. The tragic sequence of events forces Sarah to confront her own existence and the realization that her dreams of motherhood may never come true.