That JAV

Yui, an ordinary housewife, was working part-time as a hotel cleaner. One day, she finds a small can dropped while cleaning. It contained a white medicine. Yui secretly takes it home. That night, Misaki was at a bar. Curious, she took the medicine. Her body gets hot and she masturbates in the bathroom. Later, a black man comes to her to ask if she left something behind. Yui pretends that she doesn't know him. While drinking at a bar, a black man sits down next to her. The man invites Yui, "I'll give you some drugs, but you can help me with my work." and invites Yui to join him...