Lowly Class E and elite Class A compete for the most customers at their school festival booths. So far, the students of Class E are holding their own, despite their location on the mountaintop. Then a parade of familiar faces, some welcome and some...not so much...drop by with surprising consequences. Will Principal Asano’s son Gakushu be able to maintain his position as the illustrious leader of Class A? Who could possibly replace him in hopes of leading the students to victory and the subjugation of the weak...? -- VIZ Media

Meet the would-be assassins of class 3-E: Sugino, who let his grades slip and got kicked off the baseball team. Karma, who’s doing well in his classes but keeps getting suspended for fighting. And Okuda, who lacks both academic and social skills, yet excels at one subject: chemistry. Who has the best chance of winning that reward? Will the deed be accomplished through pity, brute force or poison...? And what chance does their teacher have of repairing his students’ tattered self-esteem? -- VIZ Media

The students in Class 3-E of Kunugigaoka Junior High have a new teacher: an alien octopus with bizarre powers and unlimited strength, who's just destroyed the moon and is threatening to destroy the earth--unless they can kill him first!

Mr. Karasuma gives the 3-E students superpowered uniforms...with great results. What amazing feats will they perform in their snazzy new outfits? Then, Mr. Karasuma gives Ms. Vitch a bouquet for her birthday...with disastrous results. Next, a 3-E teacher is kidnapped by master assassin the Grim Reaper, who threatens to kill his hostage if the students tell anyone. Their rescue attempt goes horribly awry, and soon they are the ones in need of rescuing! But at what cost to the world...? -- VIZ Media

What does a pathetic class of misfits have in their arsenal to combat their schoolteacher’s alien technology, bizarre powers and...tentacles?! Ever caught yourself screaming, "I could just kill that teacher"? What would it take to justify such antisocial behavior and weeks of detention? Especially if he's the best teacher you've ever had? Giving you an "F" on a quiz? Mispronouncing your name during roll call...again? How about blowing up the moon and threatening to do the same to Mother Earth—unless you take him out first?! Plus a reward of a cool 100 million from the Ministry of Defense! Okay, now that you're committed... How are you going to pull this off? What does your pathetic class of misfits have in their arsenal to combat Teach's alien technology, bizarre powers and...tentacles?! Lowly Class E and elite Class A compete for the most customers at their school festival booths. So far, the students of Class E are holding their own, despite their location on the mountaintop. Then a parade of familiar faces, some welcome and some…not so much…drop by with surprising consequences. Will Principal Asano’s son Gakushu be able to maintain his position as the illustrious leader of Class A? Who could possibly replace him in hopes of leading the students to victory and the subjugation of the weak…?

Nagisa and Karma travel to the International Space Station in hopes of learning the secret to saving Koro Sensei’s life. Meanwhile, Yanagisawa and the upstart Grim Reaper II train ever harder to assassinate him. Then, when academic setbacks lower the spirits of his students, Koro Sensei comes up with an ingenious—or perhaps idiotic—way to cheer them up. Next, Valentine’s Day arrives! Will any of the 3-E students or teachers find true love? And will the meddling and teasing of the others help or hinder Cupid’s arrow in finding its target...? -- VIZ Media

English teacher Irina’s assassination mentor makes an appearance and the two compete-using special agent Karasuma as their target. Another transfer student/would-be assassin joins the class, accompanied by a guardian who claims to be Koro Sensei’s...little brother?! A tentacle showdown ensues, sending everyone into a tentacle tizzy. Then, the 3-E students face humiliation yet again during a school baseball exhibition match. Plus, more secrets of Koro Sensei’s mysterious past revealed...! -- VIZ Media

Nagisa risks it all in an attempt to take down the mastermind behind the biological attack on his classmates. After the dust settles, Koro Sensei gives his all to ignite summer romance between his students. Turns out their English teacher Ms. Jelavitch has her sights on someone...and everyone wants to help her get her target—er, the man of her dreams. Then, back at school, one of the students defects from the 3-E ranks for all the wrong reasons. How will they win him back before he inflicts irrevocable damage on them all...?! -- VIZ Media

The 3-E students discover that Koro Sensei’s greatest weakness might be a common substance. Will they be able to use it to assassinate him while he helps Meg, formerly of the varsity swim team, with her greatest weakness? The next assassination attempt, implemented by Terasaka, is more elaborate but endangers his fellow students. Can he save them without saving his target? Then, the top class at school, including Principal Asano’s son, conspires to prevent 3-E from ever rising closer to the top! -- VIZ Media