After studying abroad, Miku started working as a life insurance lady. On the fifth day after starting work, Miku decided to go to a customer's house for business at the order of her boss. Miku tries her best to explain about the insurance, but the sons of the customer don't listen to the story of the new life insurance lady. MIKU is incontinent in the living room after being tampered with by the sons. That night, Miku was ashamed of what she had done, but her embarrassment gradually turned into pleasure.