A dull and boring employee who is constantly being scolded by his boss...One night, he happens to have the weakness of the most beautiful office lady in the company. ``If you listen to me for just one day, I'll shut up...'' Takamine decides to enter into a mistress contract with the best idol-level woman he's ever dreamed of... A cowgirl position where you can enjoy the exquisite body and beautiful meat to your heart's content, and a entangled kiss. A creepy, rich caress that crawls and licks like a slug. Ai, whose body and mind are controlled, transforms into a female masturbator who is ready to serve. ``I'm still going to enjoy your body all day long.'' It's an unforgettable day for a man who is devoted to his mistress who has fallen for pleasure. A meat slave mistress contract covered in sweat, saliva and love juices! !