Overview:

Volunteer to be a sex slave! A simulation game for expanding the genitals
The protagonist, who loves training-type erotic games, suddenly receives a call from a busty female college student who wants to be a sex slave. “Make me a sex slave!”
A simulation game in which you develop body parts to create the ideal sex slave in 100 days.
Over 210 scenes of fully animated training that focuses on the development of each body part!
The more the development progresses, the more intense it becomes!

Training is done once a day. You can train the body part you choose by consuming stamina.
As the training progresses, the parameters of the training part will increase and the rank will increase.
The higher the rank, the more intense the training and perverted play becomes possible!