Assassination Classroom Vol. 2 (manga)

A sexy new teacher comes to Class 3-E to do the students' job for them. When the 3-E students begin exhibiting signs of self-esteem, Principal Asano demands that Koro Sensei crush their spirits so they continue to set a bad example for the rest of the school to rise above. Then a class field trip goes terribly wrong when two 3-E girls are abducted. Who will come to their rescue…?