Yuya has long admired his mother's friend, Tsubaki. When he meets her again, his old feelings for her are rekindled... Unable to contain his excitement, he rapes her in the night. Tsubaki remains silent even after noticing what he has done. However, swept away by the throbbing in her body as she is touched, she makes love to Yuya again and again... Although Tsubaki feels pleasure in her affair with her friend's son, she is overcome with guilt and gradually begins to avoid him...