1x1 - Assassination Time

January 10, 2013

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

January 17, 2013

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

January 31, 2013

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

February 7, 2013

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

February 14, 2013

Before the torturous school assembly begins, Okuda attempts to poison Koro Sensei in an unexpected way... with unexpected results.

1x6 - Test Time

February 21, 2013

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

February 28, 2013

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

March 7, 2013

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

March 14, 2013

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

March 21, 2013

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

March 28, 2013

Class 3-E prepare for the arrival of their second transfer student, who is allegedly more powerful than Ritsu.

1x12 - Ball Game Tournament Time

April 11, 2013

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

April 18, 2013

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

April 25, 2013

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

May 2, 2013

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

May 9, 2013

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

May 16, 2013

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

May 23, 2013

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?

1x20 - Karma Time, Second Period

June 6, 2013

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

June 13, 2013

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

June 20, 2013

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.

1x23 - Episode 23

June 27, 2015