A chef's life is disrupted by a chime that brings with it an increasing sense of dread.
Mitsuko Kuroda is 31 years old and single. She enjoys her life as a single woman. A big reason why she enjoys her single life is that she has counsellor "A" in her mind, which is her other self. Whenever she does not know what to do, "A" gives her the right answers. She believes her happy and peaceful single life with "A" will continue, but she falls in love with Tada-kun. He is a salesperson and younger than her.
Yoshika has had a crush on Ichimiya, whom she calls "the One" since she was in middle school. Now, a 24-year-old salarywoman, her all-consuming fixation has prevented her from even considering another candidate for boyfriend until an office colleague asks her out.
