Biology Grading
Chastity Doll wants to improve her biology grade, but she has a problem, and that’s because she’s not very good at biology. But she is good at one aspect of biology, and that is reproduction, so she goes to her teacher’s house to directly try and get him to teach her some new things. In the beginning he is a little taken aback, but it doesn’t take him long to realize the advantages of this arrangement if she can keep it secret.
