NACT-181 — She looks like an ordinary middle-aged housekeeper, but in reality, she's a dominatrix and a total pervert!? - Mai Fuyuki

Oomatsu, a young entrepreneur with an extremely busy schedule, is visited by Mai, a housekeeper arranged by his subordinate without his knowledge. Reluctantly, Oomatsu lets her in, but as she cleans the room, she provocatively thrusts out her buttocks and, under the pretext of giving him a massage to relieve his fatigue, presses her body tightly against his. Though bewildered by the sudden turn of events, Oomatsu cannot resist his instincts and his groin becomes intensely erect. Noticing its hardness, Mai smiles seductively and lewdly and slowly reaches for his crotch—this is the beginning of her revealing her hidden true nature.