While her husband was not looking, mother Mai and her son Tatsuya had a romantic relationship. It's the husband's fault for always being at work and neglecting her. Mai told herself this to escape her guilt. However, as days went by, Mai's sense of indebtedness towards her husband grew, and unable to bear it any longer, she tried to end her relationship with her son... But Tatsuya, who had become addicted to sex with his mother's body, would not stop. Even though Mai verbally rejected him, her body still craved her son...
