With consecutive night shifts taking their toll, nurse senior Nina and junior Kurumi were nearing physical and mental exhaustion. As fatigue and stress built up, their desires grew stronger each day. In this state, they turned to an extremely perverted lesbian act—face licking each other. In the quiet of night, alone at the deserted nurse station, the two indulged in an eerie, erotic session of mutual face licking, satisfying the uniquely female craving known as "tired pussy," releasing their pent-up desires.