Yuya has long admired his mother's friend, Tsubaki. - When he meets her again, his old love flares up... - Unable to hold back his excitement, he ends up having sex with her at night. - Tsubaki remains silent even though she notices his actions. - However, being carried away by the tingling sensation of his body being touched, he overlaps his body with Yuya over and over again... - Although Tsubaki feels happy about her infidelity with her friend's son, she is overcome with guilt and gradually begins to avoid him...