1x1 - Assassination Time
A creature who blasted the moon into a crescent shows up at Kunugigaoka Junior High School--and he's giving the students a year to assassinate him!
1x2 - Baseball Time
The reasoning behind the E Class's segregation is revealed. Nagisa tracks Koro Sensei's weak points in the hopes of using them to take him down.
1x3 - Karma Time
The brilliant, belligerent Karma Akabane, Nagisa's former classmate, joins 3-E and immediately jumps into the assassination mission with both feet.
1x4 - Grown-Up Time
A new foreign-language teacher comes to 3-E with some major ulterior motives... among other things. Will she get any closer to killing Koro Sensei?
1x5 - Assembly Time
Before the torturous school assembly begins, Okuda attempts to poison Koro Sensei in an unexpected way... with unexpected results.
1x6 - Test Time
Time for midterms! Koro Sensei gives his aspiring assassins an ultimatum as they battle a grueling test and the disdain of the rest of the school.
1x7 - School Trip Time, First Period
The students go on a school trip to Kyoto, where they must still keep assassination foremost in their minds. Kanzaki faces trouble from her past.
1x8 - School Trip Time, Second Period
The E Class gives a pro sniper plenty of chances to take down Koro Sensei, then try to make the most of what's left of their school trip to Kyoto.
1x9 - Transfer Student Time
A new student joins the E Class with a singleminded focus on assassination that drives her classmates to distraction. Koro Sensei to the rescue!
1x10 - L and R Time
Irina is greeted by her former master, retired assassin Lovro, who thinks she should give up as she has no chance of killing Koro-sensei.
1x11 - Transfer Student Time, Second Period
Class 3-E prepare for the arrival of their second transfer student, who is allegedly more powerful than Ritsu.
1x12 - Ball Game Tournament Time
A baseball tournament is to be held, in which Class 3-E are forced to play an exhibition match against the top players of the school's baseball club, which Sugino used to be a part of.
1x13 - Talent Time
As Karasuma briefly senses what appears to be a fearsome aura coming from Nagisa, Akira Takaoka, an aquaintance of Karasuma from the Ministry of Defense, is sent to Class 3-E to take over Karasuma's role as P.E. teacher.
1x14 - Vision Time
Koro Sensei exposes a major weakness, and Terasaka interrupts a fun summer day out with an assassination attempt that goes a little too far.
1x15 - End-of-Term Time
For finals, Koro Sensei gives his class a new goal--with an irresistible reward. The E Class makes its own deal with the top-tier A Class's Big Five.
1x16 - School's Out - First Term
After two days of exams, the results are in. Both the ace A Class and the end E Class must come to terms with the outcome--and so must Koro Sensei.
1x17 - Island Time
The E Class trains intently under a pro killer to prepare for their island assassination. Once there, they must make sure everything falls into place.
1x18 - Action Time
The summer assassination attempt is followed by a crisis affecting nearly half the E Class. Can the rest think and move fast enough to save them?
1x19 - Pandemonium Time
The E Class must put their lessons into practice as they tackle an intimidating hotel brimming with baddies--and all without Koro Sensei's help.
1x20 - Karma Time, Second Period
Karma must use his head to get past a formidable foe. Nagisa goes undercover as the E Class continues to sneak its way to the hotel's top floor.
1x21 - XX Time
The students take on one last assassin opponent before meeting the shadowy figure who's holding the virus remedy hostage in exhange for Koro Sensei.
1x22 - Nagisa Time
Before Nagisa completely gives into his anger, Terasaka throws a stun-gun at him, urging him not to become a murderer and think about what's truly important.
2x1 - Summer Festival Time
Koro Sensei and his students try some matchmaking at the end of their island trip. Class 3-E's eventful summer ends with a taste of pure festival fun.
2x2 - Kaede Time
Kaede comes up with a delicious plan of attack, Class 3-E plays an intense game of Cops and Robbers, and Koro Sensei is accused of a serious crime.
2x3 - Itona Horibe Time
Koro Sensei faces off against the powerful, tentacled Itona and his handler Shiro yet again, revealing more of his teaching philosophy along the way.
2x4 - Spinning Time
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.
2x5 - Leader Time
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.
2x6 - Before & After Time
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?
2x7 - Reaper Time, Part 1
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.
2x8 - Reaper Time, Part 2
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.
2x9 - Round Two Time
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.
2x10 - School Festival Time
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?
2x11 - End-of-Term Time - Second Period
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.
2x12 - Think Outside the Box Time
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.
2x13 - Let Live Time
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.
2x14 - Secret Identity Time
Following the drama festival, the E Class learn that one of their classmates is hiding a big secret connected to Koro Sensei's past!
2x15 - Confession Time
Koro Sensei begins to come clean about his background after a tense and terrifying encounter with a student who has her own reasons to kill him.
2x16 - Past Time
Following the traumatic story of Koro Sensei's past, the E Class is left reeling after learning revelations about his past deeds and identity. As the gather themselves with this new information, it begins to affect their assassination plans.
2x17 - Discord Time
The E class is divided over whether to kill Koro Sensei or try to save him. Koro Sensei suggests a way of settling the issue between the two sides.
2x18 - Outcome Time
The battle amongst the E-Class comes down to the final two on each side: Karma vs. Nagisa. But, a new obstacle throws a wrench into the E Class's plans.
2x19 - Outer Space Time
Class 3-E has agreed to try and save Koro Sensei. In order to do this, they must track down confidential information -- information that takes the class to another height.
2x20 - Valentine's Day Time
Nagisa remains uncertain about his future as high-school entrance exams loom over him. It's time for Class 3-E to celebrate Valentine's Day!
2x21 - Trust Time
It's time for the last project from Koro Sensei before the E-Class closes out the year, but the government's own plans and threatens to get in the way.
2x22 - Happy Birthday Time
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.
2x23 - Final Boss Time
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?
2x24 - Graduation Time
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.
2x25 - Future Time
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.