A women's beauty salon quietly operating in an apartment in the city has recently introduced the trendy "Beautiful Butt Course" and is experiencing a rapid surge in popularity. Married women who are troubled by insufficient volume in their hip lines are spreading the word through reviews about the salon's reasonable prices and meticulous treatments, leading to a backlog of reservations. Despite the treatments being performed by male staff, why don't the married women object...? The married women, who are made to change into bikini swimsuits prepared by the salon...