Yumi was concerned about her shy son Yuta, but was relieved to learn that she recently made a friend named Atsushi, an honor student. However, Atsushi approached Yuta for the purpose of falling asleep by committing Yumi's plump body. And Atsushi attacks Yumi's body. Yumi thinks about her son and accepts her humiliation. Atsushi's humiliation gradually escalates...
