Nao's husband brings his subordinate from work home with him. The drunk subordinate kisses Nao right in front of her husband, who, conflicted and flustered, holds back his anger, feeling it would be childish to react. After this incident, Nao's relationship with the subordinate grows deeper, and soon she becomes captivated by the sensation of her husband's junior's lips, willingly surrendering her heart to his allure. In stark contrast to her husband's passive presence, her affair with the subordinate marks the beginning of a new romance.