Across Japan, there are many kinds of mothers, but the moms featured here share deep affection for their sons and a somewhat overprotective nature. Becoming increasingly aware of their sons' coming of age, these mothers impulsively grab a ruler to measure the length of their sons' dicks. When the sons' healthy, uncooperative cocks suddenly spring erect, the mothers instinctively respond with unexpected acts of tenderness and love unique to a maternal bond. What follows becomes a symbolic moment of parent-child connection, embodying true familial love in its most intimate form.