A married woman, Rin, who lives happily with her husband, who was tied up in a workplace romance, has a secret that she can never tell her husband. That is, she has not cut off the adulterous relationship with her husband's boss that has continued since before her marriage. Rin sways between her feelings of not wanting her husband to know and her guilt, and her husband's boss, Sawaki, who tries to control her. "That arrogant and cowardly man understands my body better than the person I love." In her repeated days of pleasure, she becomes aware of her true nature, which she does not want to admit.
