That JAV

A masochist's proclivity to pleasure his body and his interest in being tied up turns to lust! One day, Mai witnesses SM sex between her mother and stepfather and peeks in on them. Seeing her mother's face in ecstasy while she is tied up, she feels a strange arousal and masturbates. While her mother is away, her stepfather scolds her for peeping and punishes her. This leads to further training and Mai's descent into a noose..."