It was supposed to be improving premature ejaculation... I became a fool in Yuki-sensei's sharp cowgirl position.

Takeuchi Yuki, first female teacher! Yuki, who is extremely caring, is extremely frustrated when she hears about her student's concerns about premature ejaculation! "Shall I train you in the teacher's cowgirl position...?" Without any issues, he starts teaching him straddles and stimulating him with dirty words! I secretly go out in the locker room, go in after school, or go in for a sudden home visit! It's a hard, sticky, and versatile cowgirl position that continues no matter how many times you cum! I'm already making a dick fool with the pleasureful instruction from the sports teacher...!