Yuki Takeuchi, first female teacher! Yuki-sensei is so caring that when she hears her student's complaints about premature ejaculation, her frustration explodes! "Shall I train you with my cowgirl position...?" She starts the lesson by straddling him and teasing him with dirty talk, regardless of the place or time! She secretly gets sticky in the locker room, goes wild in the classroom after school, and even makes a sudden home visit to his house! The hard and sticky cowgirl position continues no matter how many times he cums! The athletic teacher's too-pleasant instruction has already made him a dick-crazy maniac...!