Entering her fifth year of marriage, Chisato married her childhood friend after reuniting as adults. Their deep mutual understanding made the relationship progress smoothly, and even now, five years later, their marriage remains harmonious. They often spend weekends together and enjoy pleasant times, yet the kind of heart-racing excitement they once shared is long gone. Speaking honestly about her feelings, she realizes, "Marriage is different from romance." Deep down, a desire stirs within her—to feel that thrilling flutter of being a desirable woman once again. Though she's never taken that first step before, something may have finally changed.