Asian teenager lets her tennis instructor teach her about sex

Her father was a very overprotective man, so when she had asked to learn to play tennis, he had sought by all means a private teacher, someone who would educate her and protect her from going out on the streets tempting all those women hunters. However he had not been able to prevent the man he had hired to be the opening of a perverse world, in a way that would scandalize him.  Each time they finished a class her progress was greater, allowing him to see if she was learning like never before in her life.  There came a point where they didn't mind being discovered by their father, but they were lucky that he turned a deaf ear or cared little about his daughter's virtue.