HUNTB-610 Lucky doctor and big breasted girl

I'm a complete idiot who can't memorize formulas. A tutor who couldn't stand looking at me like that proposed a novel formal memorization method using breasts and buttocks! Furthermore, if you answer correctly, you will be rewarded with a naughty reward! Thanks to you, I can only be excited! Of course, the effect is outstanding, and just remember the naughty places on the teacher's body, the formula will come to mind! What's more, if you score high on the test, you'll get a reward that's too sexy! My score is steadily increasing and the erotic deviation value is also exploding! This memorization method is the best!