Seduce you, the tutor, with sexual desire

I was hired by my mother to tutor me to teach for the university entrance exam. But he didn't expect that his teacher would be so beautiful, and he would be so lewd again. Gradually, the two of them developed feelings and I slapped him all the time. In the days that followed, I didn't study at all, but just dragged his brother out to punch. Recognizing that his brother is just delicious, he is also good at sex, why am I so infatuated with his brother.