Seasons & episodes
S1 · E1Assassination Time 7.5 / 10 · 1 published rating 2015-01-10 · 24 min
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!
S1 · E2Baseball Time 7.8 / 10 · 1 published rating 2015-01-17 · 24 min
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.
S1 · E3Karma Time 4.7 / 10 · 2 published ratings 2015-01-31 · 24 min
The brilliant, belligerent Karma Akabane, Nagisa's former classmate, joins 3-E and immediately jumps into the assassination mission with both feet.
S1 · E4Grown-Up Time 8.2 / 10 · 1 published rating 2015-02-07 · 24 min
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?
S1 · E5Assembly Time 8.2 / 10 · 1 published rating 2015-02-14 · 24 min
Before the torturous school assembly begins, Okuda attempts to poison Koro Sensei in an unexpected way... with unexpected results.
S1 · E6Test Time 8.4 / 10 · 1 published rating 2015-02-21 · 24 min
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.
S1 · E7School Trip Time, First Period 9.0 / 10 · 1 published rating 2015-02-28 · 24 min
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.
S1 · E8School Trip Time, Second Period 8.6 / 10 · 1 published rating 2015-03-07 · 24 min
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.
S1 · E9Transfer Student Time 8.4 / 10 · 1 published rating 2015-03-14 · 24 min
A new student joins the E Class with a singleminded focus on assassination that drives her classmates to distraction. Koro Sensei to the rescue!
S1 · E10L and R Time 8.3 / 10 · 1 published rating 2015-03-21 · 24 min
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.
S1 · E11Transfer Student Time, Second Period 8.1 / 10 · 1 published rating 2015-03-28 · 24 min
Class 3-E prepare for the arrival of their second transfer student, who is allegedly more powerful than Ritsu.
S1 · E12Ball Game Tournament Time 7.7 / 10 · 1 published rating 2015-04-11 · 24 min
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.
S1 · E13Talent Time 7.7 / 10 · 1 published rating 2015-04-18 · 24 min
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.
S1 · E14Vision Time 8.0 / 10 · 1 published rating 2015-04-25 · 24 min
Koro Sensei exposes a major weakness, and Terasaka interrupts a fun summer day out with an assassination attempt that goes a little too far.
S1 · E15End-of-Term Time 8.2 / 10 · 1 published rating 2015-05-02 · 24 min
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.
S1 · E16School's Out - First Term 8.1 / 10 · 1 published rating 2015-05-09 · 24 min
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.
S1 · E17Island Time 8.4 / 10 · 1 published rating 2015-05-16 · 24 min
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.
S1 · E18Action Time 8.6 / 10 · 1 published rating 2015-05-23 · 24 min
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?
S1 · E19Pandemonium Time 8.4 / 10 · 1 published rating 2015-05-30 · 24 min
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.
S1 · E20Karma Time, Second Period 8.2 / 10 · 1 published rating 2015-06-06 · 24 min
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.
S1 · E21XX Time 8.0 / 10 · 1 published rating 2015-06-13 · 24 min
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.
S1 · E22Nagisa Time 7.9 / 10 · 1 published rating 2015-06-20 · 24 min
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.