Is Koro-Sensei dead?
Korosensei
does die at the end of Assassination Classroom.
What exactly is Korosensei?
Korosensei (殺せんせー,
Korosensei) was the homeroom teacher of Class 3-E of Kunugigaoka Junior High School, and the secondary protagonist and antihero of Assassination Classroom. ... Prior to being a teacher, he was the assassin known as "The Reaper".
Did Mr Karasuma and Irina get married?
Aftermath. After seven years have passed since the assassination of Koro-sensei it's shown that
Irina is now married to Karasuma and works with him in the Ministry of Defence. Her personality didn't change even after seven years of marriage.