50-year-old Rikako Aoki. Her son, born when she was in his mid-thirties, is now preparing for a prefectural tournament and practices late into the night every day. Devotedly, the mother spends her days giving him tender massages. However, the son is no longer satisfied with mere massage—he seeks a "different" kind of stimulation, guiding his mother's fingertips toward his groin. Troubled by her son's actions, the mother hesitates but eventually confides in the familiar neighborhood liquor store owner, hoping against hope that some light might shine upon her dilemma…