Shiori enjoyed a wild lifestyle filled with casual flings before ultimately securing a winning marriage with a highly desirable, high-achieving man whom everyone envied. Her husband was financially stable, emotionally distant, and granted her complete freedom without restrictions—but strangely, her days gradually became dull and unfulfilling. Eventually, she found herself going out to drink alone more often, where she unexpectedly reunited with Akira, her former casual lover. He was the one man she could never forget, the last person she truly fell for, and this chance encounter reignites long-buried emotions, sparking the beginning of something new and intense.