If you're looking for anime similar to Rental Girls, you might like these titles.
Meeting up with the members of the junior high school tennis club after many years certainly brings back memories, after hearing about what each of them became. For Tatsuya, it is a perfect occasion to find out which girl secretly cheered on him, putting flowers in his locker. Through dates and shopping with all of the girls, the careless boy breaks countless hearts, while trying to uncover the truth. Will he be able to find out who his secret admirer was? Who will earn his heart in the end?
Dr. Toyama takes control of the body of a beautiful girl with his strange invention. He lets the young Asagedani "slip into" her body so he can see how it real feels to be a girl. Then Komaba's classmate, the equally beautiful Nakano, surprises "him" and mistakes his activities for a sexual advance from her friend.
Father Yuri brings up the International Breast Research Society and their claims to be able to rid women of their ailments. Katja decides to investigate the rumors surrounding them further and learns that the society is not all what it seems.