A training game with a couple of routes for you to choose how your relationship with Mildred (the main heroine) goes.
Although she is treated like a slave in the beginning of the game thanks to the option you choose you can steer it towards being a more romantical relationship rather than a master and a servant, which in case makes the story more bearable if you are not into darker stuff.
There are some side heroines but the main focus of the game remains in Mildred, having more than half of the scenes starring her.
If you like Mildred you are going to be happy getting this, as the art is really well done and with her being in most of the scenes there is a huge amount of CG of her to unlock.