Rei has been living a comfortable but monotonous married life for five years. One day, she receives an invitation to her best friend's wedding... On the day of the ceremony, seeing her best friend and her husband makes Rei reflect on her own dry life and feel lonely. Just then, a friend of the groom, Ozawa, approaches her. Feeling at ease with the kind Ozawa, they end up going to a bar together, and in the heat of the moment, they cross a line... They part ways after that, but one day while Rei is drinking alone, she runs into Ozawa again...
