Assassination Classroom Smiling Koro Sensei Drawstring Bag Licensed Backpack Korosensei plans on destroying the earth when he's done teaching Class 3-E. His face changes depending on his mood, and it looks like you caught him in a normal mood! Fans of this peculiar homeroom teacher can show off their love for Assassination Classroom with this Assassination Classroom Koro Sensei Drawstring Bag! Measures about 13-long x 17-inches tall. Ages 15 and up.