Assassination Classroom- Our new teacher ?!

My 1st year in Kunugigaoka high school is actually fun, there I met Nagisa Shiota and Karma Akabane.
Before meeting them, I was called the "Emotionless princess" Because I don't usually show emotion..
I'll tell you why later.
I was the top 1 in the whole school on my 1st year, but on my 2nd year, I was tied in 1st place with the transfer student, other wise known as the chairman's son, Gakushuu Asano.
We became good friends, really good friends. Soon, He started to lose focus of his studies and mr. Asano wanted to know why. Then, when he saw me, the top 2nd in school, hanging out with his son, he knew he wanted to drop her out so his son can focus again in studying. So he devised a plan to drop her out of school, which he succeeds.
But soon, at 3rd year of High school, she came back, she moved to class E but not as a student, but as a TEACHER! ^_^