OVA
Description
Kyoko Sano's life fractured after a car accident killed her husband and infant son. This profound trauma drove her into work as a live-in nanny and tutor. Haunted by grief and physical pain from unsuckled milk, she secretly became a wet nurse, breastfeeding other children seeking emotional relief.

Her professional behavior deteriorated into inappropriate and sexual conduct, resulting in dismissal after she was caught performing indecent acts with a young client. This pattern of forming harmful relationships with children in her care recurred throughout her past, including with Shinji Sudo, a former client who later died at her hands.

Years later, Kyoko reconnected with Toji Ide, now a college student who had been one of her childhood clients. They developed an intensely intimate relationship centered on breastfeeding and sexual encounters. This dynamic shattered when Toji began a secret affair with Kyoko's daughter, Marika. Discovering their betrayal, Kyoko violently confined Toji to an underground chamber, restrained him on a cross-like structure, and whipped him into submission.

Marika confronted her mother, urging her to end the toxic relationship with Toji for his sake. Kyoko feigned remorse and agreed to separate, but this was a deception. Consumed by extreme jealousy and possessiveness, she murdered Marika, declaring that no one, not even her daughter, would interfere with her bond to Toji.

After Marika vanished, Toji returned to Kyoko seeking answers. Learning she had killed Marika, he faced severe torture. Kyoko imprisoned him again, deprived him of solid food, and sustained him solely with her breast milk until he succumbed to malnutrition and injuries.

The disappearances of Marika and Toji drew police attention. Two detectives investigated, uncovering evidence linking the buried bodies to Kyoko Sano. Confronted in her backyard, she denied involvement while concealing a knife behind her back, leaving her fate and that of the detectives unresolved.

Kyoko Sano possesses long red hair reaching her waist and blue or grey eyes. Psychologically, she exhibits deep possessiveness rooted in her trauma, manifesting as sadistic tendencies and an inability to tolerate perceived betrayal, exemplified by her assertion of absolute control over Toji and the violent elimination of obstacles like her daughter.