99% pass rate! "Why is it so amazing!" Her colleagues are astonished! The reason for its popularity is that many female college students who value appearance are active... but there is another secret that motivates the students... They subtly tempt the students by showing off their bare nipples with a floating bra. "If you can solve all the questions, let's have sex." She studies like crazy with the promise of the teacher, and the reward is insertion! (Raw penis OK) Why do students work hard? Because they can have sex with their teacher!