Konno is hesitating to quit his part-time job. The reason? He has fallen in love with a beautiful married coworker. Lately, he's noticed that the usually elegant housewife seems a bit troubled and keeps sighing. Wanting her to be happy, he tries various ways to cheer her up. Eventually, she finally gives him a smile. His persistent efforts pay off as her sorrowful expression transforms into a bright one. Captivated by her beautiful smile, Konno loses his heart and confesses the feelings he's kept hidden for years. However, an unexpected turn of events awaits. Bracing himself for rejection, he receives a reply he never anticipated...