Nagisa had the first scene, needless to say, she is my favorite. Imai Kaho had the second scene, and she seems to be very popular among many guys on this site. Then, Minami Riona had the final scene, and she was surprisingly pretty good.
On the plot, this one lame teacher is always getting bullied and ridiculed by the bitchy students. Eventually, he reaches the boiling point of no return and he decides to retribute these bitch students with his dick, whether they like it or not.