I am a private tutor. I go to students' homes and teach them. The other day, I announced that I would do whatever I was told if I got a perfect score on an exam, and one of my students, Kana, got 100 points! I am happy for her, but something is wrong.... But something is wrong... She seduces me with her S-feel! She even has sex with him! She even chases him and sucks his cock when he runs away to the restroom! To top it off, he has sex with her again in her loungewear!