Wakaba, 30, is engaged to Kazuya, an elite colleague of hers, after seven years of dating. Despite being extremely busy with wedding preparations and work, she is the envy of her colleagues and lives a happy life. One day, when Wakaba is about to discuss wedding preparations at her favorite coffee shop, Kazuya suddenly confesses that he has impregnated a junior girl at work. Wakaba is shocked by this confession and blames him for cheating, but Kazuya shows no remorse and leaves her alone. Wakaba is stunned and unable to believe it. Then, the owner of the coffee shop offers her a cup of coffee...