Ten years since her husband passed away, Sachiko had raised her only son, Hiroshi, single-handedly. Hiroshi also secured a job at his uncle's company, marking an end to Sachiko's child-rearing duties. However, their peaceful days were short-lived as Hiroshi made a serious mistake at work. Uncle Yoshio visited their home and pressed for answers, but Sachiko, naive about the world, was at a loss. Yoshio, who had been secretly targeting Sachiko, saw his chance and said, "The mother must clean up her son's mess," as he began to grope her ample breasts…
