Nagi, the capable and respected department head, sometimes takes a strict approach to educating her subordinates. However, she harbors a secret that she could never reveal to anyone at the company. 'Ah... ah... Welcome home, sister.' Upon returning home, one of her subordinates, mai, greets her with a collar around her neck. The relationship between boss and subordinate is reversed day and night. By day, they are a serious elite and an ordinary employee. By night, they are a perverted female slave● and a sadistic lesbian. Their SM relationship sinks into endless pleasure...
