Karma Akabane X Reader

(I do not own assassination classroom, i own only the plot, and you belong to yourself.)
it wasn't to long ago that i had transferred to Kunugigaoka Jr high, i was just a normal Jr. high girl nothing special about me, but when my parents died and non of my relatives took me in the government took me in, more specifically Tadaomi Karasuma. i never really had a talent, i was average in ever thing except for my studies, but when the government found me they trained me, I showed great skill in the subject of assassination. i was a quick learner and could figure out any move just by watching or reading about someone doing it once. After a while I became known as Lullaby. but then a yellow monster appeared claiming that he blew up the 70% of the moon and would do the same to the earth by graduation. so now i'm here in class 3E.