History Awesome / AssassinationClassroom

** Terasaka should get some credit, too. Not only does he ignores the effects of a deadly virus fortunately, it turns out that it was just something that was similar to an intoxication for ''hours'' (even helping in the infiltration) while others were knocked out after ten minutes, his words of encouragement allow Nagisa to snap out of his rage-induced breakdown.

-->'''Karma:''' Oh, come on. Even a kid in elementary school could get this!

* Chapter 106: Karasuma's inhuman physical abilities. An explosive trap set behind a door? He kicks the door open then performs a backwards fall '''at the same speed of the blast''' with the door shielding him from damage. Six Doberman dogs trained to fire guns? [[SlasherSmile He smiles]] and scares the living hell of him and they let him pass. Then he stops an iron beam flying at him with his bare-hands and grabs a crossbow just as it fires at him immediately afterwards. He may as well share [[LightNovel/{{Baccano}} Claire Stanfield's]] bloodline.

** Emphasis needs to be placed on how amazing this is. From the moment that Kayano was pierced through the chest by the God of Death, Korosensei sent out tentacles to catch as much of her blood and cells as he could. Which, considering the fist-sized hole in Kayano’s torso, is easily MILLIONS of tiny, microscopic cells. He then proceeded to keep ALL of the those cells safe while finishing his battle with Yanagisawa and the God of Death. Then, exhausted from his battle, Korosensei surgically (for lack of a better term) places ALL of the cells in the exact place they came from, using his own mucus to take the place of the VERY FEW cells he missed. Seriously, WOW.

* Chapter 133: Koro-sensei was the previous God of Death, the world's greatest assassin, two years ago. Take what prowess the God of Death that Class E encountered had, and apply that to Koro-sensei before now, maybe even '''[[UpToEleven amplify it]]'''. It's no wonder Class E got so good at assassination techniques in the span of a year!

* Chapter 167: Bitch-sensei visits the kids and, to their collective surprise, kisses all of them--some rather deeper than others. When she leaves, several of the students find their mouths full of equipment and maps needed to make an escape. Bitch-sensei takes SleightOfTongue and turns it UpToEleven.

** Isogai leads a suicide charge against [[GadgeteerGenius Itona]] and [[ColdSniper Hayami]]. Yada manages to kill Hayami despite being inferior regarding their skill in marksmanship, while [[KnifeNut Maehara]] proves that bringing a knife to a gunfight is plausible when he kills Itona while DualWielding two of them.

* Chapter 173: Kayano rescuing Koro-sensei by throwing herself at Yanagisawa and the God of Death, at grave risk for her own life (and sure enough, she appears to get killed), in order to occupy his attention while Koro-sensei can rejuvenate himself.

** It's extra awesome on a meta-level when you realize, via the flashbacks and by going back through the series itself, that the author has been very very very ''very'' subtly hinting at this twist since early on, even going so far as to set up Nagisa as a ''gigantic'' RedHerring by doing everything in his power to imply that Nagisa was the monster Shiro was talking about...all while Kayano was lurking imperceptibly in the background.
** In essence, the author managed to perfectly assassinate every. Single. Reader. He got his weapon in close, hiding it in plain sight where none suspected, waited until the opportune moment when the reader's guard was down, and then... he struck! Precise, quick, and undoubtedly final. Truly a SugarWiki/MomentOfAwesome.

** And, as if all of that wasn't [[SugarWiki/MomentOfAwesome awesome]] enough, it turns out that Takebayashi's going to memorize all of the info the class needs to know about explosives, so that he can teach the rest of the class how to use them against Koro-sensei. ''Goddamn'', Takebayashi.

* Chapter 84: Koro-sensei defeats Itona a third time. This time it's easier, and he even pulls off a new move he recently learned. Instead of compressing his body to activate his Absolute Defense Form, he compresses the tips of his tentacles to release a burst of pure energy, and this is while giving Itona a lecture about how important is for a teacher to study and mold young minds, which is exactly how he defeats Itona this time, because the latter [[VillainForgotToLevelGrind refused to learn from their past battles]] and used the same predictable strategy.
-->'''Koro-sensei:''' Remember this, Itona. Assassination is education, and in an Assassination Classroom, the teach grows stronger with every lesson.

*** When E's attack squad is chased, running ''into the audience'' to evade since there's not rule against it.
*** Two E students everyone thought were knocked out were actually sneaking round the pitch to jump A's pole from behind.
*** E is able to leave only ''2 people'' guarding their tilted pole and the five pinned A students by tricking the A students into thinking that Asano hasn't ordered them into doing anything yet and therefore they shouldn't get out and topple E's pole. Everyone else in Class E is therefore free to attack Class A.

* Chapter 95: The students accidentally injure an old man when they partake in urban parkour in an attempt to hone their skills further. Koro-sensei not only '''[[http://www.mangahere.co/manga/ansatsu_kyoushitsu/c095/15.html slaps them]]''' - which Karasuma is willing to overlook - [[WhatTheHellHero but he calls them out as being no different from Class-A with their behaviour.]]

* Class A's top students taunt Class E as they study, and playfully state that they'd offer their lives in a wager over the test results. Class E shuts them up quickly [[http://www.mangareader.net/assassination-classroom/51/19 with stationery at their necks]] in a moment's notice, and Nagisa calmly tells them not to risk their lives so freely.

%%Moments subpages are Administrivia/SpoilersOff.

** Then in Chapter 40, [[spoiler: Karasuma chooses Nagisa to fight Takaoka, the new SadistTeacher on the block, as a direct result of Chapter 38.]]

** Terasaka should get some credit, too. Not only does he ignores the effects of a deadly virus [[spoiler:fortunately, it turns out that it was just something that was similar to an intoxication]] for ''hours'' (even helping in the infiltration) while others were knocked out after ten minutes, his words of encouragement allow Nagisa to snap out of his rage-induced breakdown.

** Before that, there was Chapter 14, where answering the questions on the midterm tests are regarded as something akin to slaying gigantic, carnivorous monsters.

* Regardless of its actual effectiveness, the sheer complexity and scope of Class 3E's plan in chapter 59 is pretty awesome and shows how much they know about their target, and how serious they are. The ''only'' reason they failed was because they were 0.5 seconds too slow in the delivery. If they'd been just slightly faster, even Koro-Sensei's ultimate defense would have been useless.
** Also, the fact that they were able to gather so much embarrassing footage without Koro-sensei noticing.

* Many of Koro-Sensei's actions are either this, CMOF, or CMOH. Frequently, multiple crowns apply to the same actions.

** Kayano rescuing Koro-sensei by throwing herself at Yanagisawa and the God of Death, at grave risk for her own life (and sure enough, she appears to get killed), in order to occupy his attention while Koro-sensei can rejuvenate himself.

** Kayano rescuing Koro-sensei by throwing herself at Yanagisawa, at grave risk for her own life (and sure enough, she appears to get killed), in order to occupy his attention while Koro-sensei can rejuvenate himself.

* Chapter 84: Koro-sensei defeats Itona a third time. This time it's easier, and he even pulls off a new move he recently learned. Instead of compressing his body to activate his Absolute Defense Form, he compresses the tips of his tentacles to release a burst of pure energy, and this is while giving Itona a lecture about how important is for a teacher to study and mold young minds, which is exactly how he defeats Itona this time, because he refused to learn from their past battles.

* Episode 1 of the anime: Yes, it easily crosses over into NightmareFuel, and it firmly cements [[EvenEvilHasStandards Koro-sensei]] as an anti-''villain'', but his outrage and subsequent threat to the three delinquents who had the gall to put Nagisa in danger just to take a swing at him is nothing short of amazing. BewareTheNiceOnes indeed. The NightmareFuel may have been mitigated by the fact that he was bluffing.

* Chapter 84: Koro-sensei defeats Itona a third time. This time it's easier, and he even pulls off a new move he recently learned.

* During the first year finals, Class E manages to completely trounce Class A's test scores and monopolize most of the top 50 spots in the school. They also pull one over on Koro-sensei by having a bunch of their weaker students all get the top scores in home economics. As part of the agreement they made with Koro-sensei, their LoopholeAbuse allows them to get a huge handicap next time they fight him. They also manage to take Class A's special summer resort trip.

* The results of the second term exams: Everyone in Class E made the top 50. Even Terasaka. He placed 46th.

* The entire school festival arc. Class E is pitted against Class A to see who can pull in more money for annual school festival. Class A pull out all the stops, opening up a cafe funded with corporate sponsorships that pay all of their food costs, as well as hiring famous comedians and idols to draw in crowds. Meanwhile, Class E mostly use what they can scrounge from the mountains to keep the cost of their dishes within school regulations, yet make them good enough to make the mountain trip worthwhile. And they manage to create a ramen so good that it pulls in crowds from all over Japan. They are forced to close on the second day of the three day festival due to running out of ingredients, and still manage to place third in the festival rankings. Even Class A acknowledged that Class E came close to beating them, and naturally, Chairman Asano was not happy about it all.