"Next time it feels even better..." I was dehydrated by my M-cup busty stepmother's thorough spoiled pleasure training.

My father remarried. My new mother, Ai, was my homeroom teacher in elementary school. Ai has always treated me like a child, and her skin contact is unusually intense. I think I'm going too far... but when I'm surrounded by those big boobs, everything doesn't matter. Since I became a student taking the exam, I have been feeling anxious that my grades have not improved. Then Ai, who offered to be a private tutor, said, "Every time you answer correctly, you give me a reward," and every time you answer correctly, the reward becomes more and more extreme...