Koro Sensei faces off against the powerful, tentacled Itona and his handler Shiro yet again, revealing more of his teaching philosophy along the way.
Itona endears himself to the boys in Class 3-E as he shows off his assassination creation. The students call each other code names for an entire day.
Competition between the elite A Class and downtrodden E Class heats up at the school sports festival, with Isogai's livelihood hanging in the balance.
After an accident, the E Class winds up doing a whole different kind of studying off campus. But will they have a chance to bone up for the midterms?
A well-intentioned act leads to a falling-out with Professor Bitch. Soon the E Class finds itself facing off alone against a formidable assassin foe.
When Koro Sensei and Mr. Karasuma reach the Reaper's hideout, it's anyone's guess who'll come out on top--especially with wild-card Irina in the mix.
The students consider their future career options. Nagisa struggles to come to terms with his talent; meanwhile, his mother has her own plans for him.
Each class at Kunugigaoka Academy is competing for the highest sales totals in the school festival. How can the E Class even hope to stand a chance?
It's exam time again, and the cream-of-the-crop A Class is a bigger threat than ever before. Top-ranking Asano, however, has something up his sleeve.
The end-of-term exams come down to one doozy of a final problem. Principal Asano comes to Koro Sensei with a little wager that has a lot riding on it.
Principal Asano recalls his first foray into the world of education. In the drama festival, the E Class puts on a play with a few unexpected twists.
As the E Class cleans up after the drama festival, they learn that one of their classmates is hiding a big secret connected to Koro Sensei's past.
After a tense and terrifying encounter with a student who has her own reasons to kill him, Koro Sensei begins to come clean about who he really is.
The E Class is left reeling after Koro Sensei's revelations about his past deeds and identity--information that may affect their assassination plans.
With the class split into two factions over whether to kill Koro Sensei or try to save him, Koro Sensei himself suggests a way of settling the issue.
Koro Sensei's fate comes down to a battle between old friends Karma and Nagisa. A daunting new obstacle throws a wrench into the E Class's plans.
Class 3-E goes to crazy lengths--or is it heights?--to track down confidential information that might just help them keep Koro Sensei alive.
With high-school entrance exams looming, Nagisa is unsure which path his future should take. Class 3-E greets Valentine's Day with chocolates aplenty.
Koro Sensei has one more project planned to close out the year with his beloved E Class, but the government's own plans threaten to get in the way.
The students fight to see their teacher one last time. A figure from Koro Sensei's past arrives with a serious grudge against the super-creature.
A pitched battle between two super-creatures threatens to harm the students of Class 3-E. Can Koro Sensei protect them while fighting for his life?
Time is running out, and the E Class students must decide once and for all whether to kill the teacher who so changed their lives over the past year.
Graduation day: one of life's chapters ends and another begins as the students and teachers of Class 3-E go on to forge their own paths in the world.
