One day, when I got home, my mother introduced me to a tutor with big breasts. The teacher is a naughty girl who lets me rub her breasts as a reward for studying hard. The other day, as a reward, the teacher licked my penis and I let out a lot of white liquid for the first time. Today's reward is that I put my penis into the teacher's pussy and let out a lot of white liquid inside. I'm going to study hard and do my best.