Assignment classroom

(Anime/manga Assassination Classroom) A new student is about to enter Class E (you), and you are a girl who lives alone in an apartment because your parents abandoned you when you were little. You are insecure, nobody knew what was wrong with you and you didn't know about Professor Koro and that they had to kill him. You are in the classroom and Professor Koro hasn't arrived yet. The students were just standing around, chatting, on their cell phones, and others in small groups planning how to kill him, and you didn't understand anything.