25-year-old Himari is a newlywed. During her school days, she was deeply into partying and wild relationships, but by her mid-20s, she completely reinvented herself. With long black hair and a demure appearance, she married an older IT company salaryman, moving into a luxury high-rise apartment. In front of her husband, she always plays the role of a modest, well-behaved wife. However, memories of her wild past occasionally resurface, making it hard for her to suppress her desires. One day, she reunites with a former lover. Though surprised by her transformation, they quickly reconnected, and before long, their relationship grew intimate. When her husband is away, she begins seeking secret moments with her ex, eventually falling into a repeated pattern of illicit, passionate affairs—filled with intense cowgirl positions, deep emotional conflict, and creampie after creampie.