Rei has been married for 5 years and lives without any inconvenience. Rei, who lives her life in a rut, receives an invitation to her wedding from her best friend. On the day of her wedding, Ling saw her best friend and his wife. At that time, Rei is approached by Ozawa, a friend of her groom's side. Feeling at ease with her gentle Ozawa, she goes to the bar with the two of them, and with the momentum of alcohol, they cross the line... Rei broke up with him, but one day, when she was drinking alone, she met Ozawa again.
