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Season guide

Assassination Classroom: Season 1

22 episodes Premiered Jan 9, 2015 Updated Jul 22, 2026

Assassination Classroom is an animated television series that premiered in 2015. The narrative follows the students of Class 3-E, a group of junior high school misfits tasked with a high-stakes mission. Their objective is to assassinate their new teacher, an octopus-like creature nicknamed Koro-sensei. This creature is responsible for destroying the moon and has issued a threat to destroy the Earth within one year. T

Season overview

Assassination Classroom is an animated television series that premiered in 2015. The narrative follows the students of Class 3-E, a group of junior high school misfits tasked with a high-stakes mission. Their objective is to assassinate their new teacher, an octopus-like creature nicknamed Koro-sensei. This creature is responsible for destroying the moon and has issued a threat to destroy the Earth within one year. To incentivize the students, the government has placed a reward of 10 billion yen on the teacher's head. Despite the lethal nature of their assignment, the students must balance their assassination attempts with their academic responsibilities. Koro-sensei proves to be an unexpectedly excellent educator, complicating the students' mission. Individual episodes frequently focus on the personal growth of specific students as they navigate their internal conflicts. These students must reconcile their duty to kill their teacher with the developing bond they form as they learn from him. The series blends elements of comedy, action, adventure, science fiction, and fantasy to explore the dynamic between the class and their extraterrestrial mentor. The show is classified as TV-14.

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Episodes

S1·E1

Assassination Time

Jan 10, 2015 · 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·E2

Baseball Time

Jan 17, 2015 · 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·E3

Karma Time

Jan 31, 2015 · 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·E4

Grown-Up Time

Feb 7, 2015 · 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·E5

Assembly Time

Feb 14, 2015 · 24 min

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

S1·E6

Test Time

Feb 21, 2015 · 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·E7

School Trip Time, First Period

Feb 28, 2015 · 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·E8

School Trip Time, Second Period

Mar 7, 2015 · 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·E9

Transfer Student Time

Mar 14, 2015 · 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·E10

L and R Time

Mar 21, 2015 · 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·E11

Transfer Student Time, Second Period

Mar 28, 2015 · 24 min

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

S1·E12

Ball Game Tournament Time

Apr 11, 2015 · 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

S1·E13

Talent Time

Apr 18, 2015 · 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 ta

S1·E14

Vision Time

Apr 25, 2015 · 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·E15

End-of-Term Time

May 2, 2015 · 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·E16

School's Out - First Term

May 9, 2015 · 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·E17

Island Time

May 16, 2015 · 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·E18

Action Time

May 23, 2015 · 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·E19

Pandemonium Time

May 30, 2015 · 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·E20

Karma Time, Second Period

Jun 6, 2015 · 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·E21

XX Time

Jun 13, 2015 · 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·E22

Nagisa Time

Jun 20, 2015 · 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.