English teacher, Irina is competing with her mentor and set special agent Karasuma as their target. Whoever that can successfully kill Karasuma will continue staying at the school to continue the assassination plan against Korosensei. Korosensei believes that her existence will motivate the students to become a better assassin.
Another transfer student or assassin joins the class, who claims to be Korosensei’s little brother. Korosensei has doubt about it although both of them have a lot of similarities and the most important thing is, he has tentacles as well.
Then, the 3-E students face humiliation yet again during a school baseball exhibition match. With the help of Korosensei, will 3-E students able to defeat the elite team and defend their dignity?
This volume was not as exciting as earlier volumes although Korosensei’s little brother appears in the story. The fighting scene was a bit confusing for me and since I’m not a baseball fan, I totally didn’t understand the last part but I’m still looking forward to reading the next volume.
Previous volume review available here: Assassination Classroom Vol. 03: Time for a Transfer Student.
More reviews can be found on Goodreads: Assassination Classroom, Vol. 04: Time to Face the Unbelieavable.