He's gonna have to kick Yamada's ass next time he sees him. Sure, come in to Majima's office unannounced, that's fine. Talk non-stop for 30 minutes while Majima desperately tries to ignore him, that's alright. Spill your stupid iced coffee thing all over the notes Majima made for today's lecture, then run away before you can be forced to clean up your goddamn mess, that's fucked up. Now he has no notes, no plan, no lecture, and most of his students are staring at him, waiting for him to begin today's lesson. He doesn't even remember what today's lecture was supposed to be about. Now what is he supposed to do? Sure he could just use time stop to get a new set of notes together, that would be easy. It would be trivial. But Majima really doesn't want to. Should he just make it up as he goes along? Yeah, that sounds good. He could probably bullshit his way through just one lecture, or at the very least 45 minutes. Alright, let's get started. He stood at the front of the room, already in full costume. The cloak ended up being more of a poncho than a cloak, but the mask was right, so he gave it a pass. Wasn't wearing that part right now, though, it was laying on his desk. The boots Nezu recommended actually fit pretty well, so that's a plus.
"Okay, about 200 years ago, give or take a handful of decades, quirks happened. Alright? We got that, that's been covered in your other schools. Quirks have been a thing for…" Oh god, what year did quirks start? What year was it now? "… Quite some time now. The hero society was created out of a necessity to stop everyone with a quirk from going full asshole because someone forgot to put ketchup on their omurice." They were looking at him weird. This plan is falling apart faster than he'd thought it would. "Okay, I am obviously oversimplifying this. Basically, the laws that prevented the public use of quirks were implemented, but that clearly wouldn't stop anyone with even a lick of determination."
"So, what do you do? Obviously, ya got to fight fire with fire, so they created the original hero registration procedures. Only the brightest beacons were allowed to even take the tests, and even fewer passed them. Those that failed but still received a high enough score would eventually go on to become some of the first sidekicks. From there, they would follow in the footsteps of the hero they were assigned to, and would sooner or later become a hero themselves. Those heroes would then get sidekicks themselves, and would perpetuate the cycle."
"Back to the topic of villains, though. Early on, it was realized that there were three types of villains. Sure, these would often bleed over into each other, and you would rarely find a villain that would be a pure form of just one aspect, but I happen to have been a witness to a pure form of each. Now, all of the shit I'm about to tell you guys has been struck from the history books, and for a good reason. I don't expect you to understand that reason, but the fall of the non-quirked society was… Ugly. Riots, mobs, protests, both violent and non-violent. Fuck, there was even a small war over in the states."
"Alright. The three core principles of villainy are as follows: Trauma, Career, and Power. The three examples for these principles are The Echoed Mind, All or Nothing, and All for One. Uh, Midoriya, you doin' okay?" The hell is up with the kid, he jumped up in his seat at that last name. Sure, All for One wasn't the best name, but if ya knew what his quirk was, he was down right terrifying. He should probably not tell the students just what ol' All for One used to be capable of, regardless of the fact that the man's been dead for quite some time now.
"I'm fine, Majima-sensei. Just wasn't expecting hear names quite like those." Izuku explained, which made sense. Codenames back in the day could be weird. Hell, Majima's original codename wasn't all that great, he was just copying the naming convention that Akira and Jin were using. Did Aimi ever give herself a name before everything went tits up? He knew she eventually took Jin's name when everything was said and done, but he never kept any tabs on her after he ran.
"Alright then. Now, as I was saying, each of these villains were a rare example of the pure embodiment of one of these Echoed Mind was trauma. Their true name was Fujita Jin, and they-"
"Majima-sensei!" Holy shit, Ashido is actually raising her hand in his class to ask a question. He guessed that Izuku's study session with her yesterday did more for her confidence than he'd thought it would. Okay, act natural, just acknowledge her question.
"Yes, Ashido, do you have a question?" Nailed it.
"Is this the same Jin that you're always talking about?" Goddamnit, at least she's asking questions. And seeing how old he was, that's technically a legitimate question. Judging by the look on the faces of Kaminari and Ojiro, she wasn't the only one wondering about that.
"No, my old friend Jin and Fujita Jin were not the same person, but that was a good question regardless." Majima Kokiri, helping boost student morale. Didn't think that would ever be a thing in his life. "Either way, Fujita started as a young child with an immensely powerful telepathy quirk. When used, it would implant a single thought in the victims mind that would echo on an endless loop. This thought would grow more powerful as time would pass, until it would completely consume the victims entire thought process. It would drive them to madness, and depending on what the implanted thought was, they would become more frantic and aggressive in an attempt to remove the thought. Fujita would implant within his victims incredibly violent urges and hostile intentions, which would drive them to commit increasingly violent crimes as they tried to remove the horrors he would give to them."
"No one was able to connect these strings of random crimes and murders until Fujita was already an adult, but once they realized that it was a quirk user that was responsible, they started to do some digging. And boy, the shit they found was like something from the most terrifying Stephen King novel." Yep, damn this generation, not knowing all the good horror writers. Wait, Sero looks pretty excited. He knew about King? There's a few conversations to be had there, if that's the case. "When they looked through the registry, which was very limited at the time, they managed to narrow it down and they eventually got themselves some information, none of which looked good. In and out of orphanages and foster homes, reports that he had been abused both physically and sexually, multiple hospital visits. It was a mess. The boy had been broken, unmade, and the only thing left was a violent husk that lashed out and everyone around him. He was traumatized, and he acted without goal or reason, simply reacting to a world that was made too harsh for him. "
Some of the students were starting to look a bit pale, which was good. This was an important topic. The world is fucked up, and Aizawa could use some help in making sure these kids understand that. "The second classification is career, and back in the day, nobody had a better criminal career than All or Nothing. Hell, to this day, he remains at the top of whatever fucked up scoreboards that exist for this type of shit. A hitman for hire, All or Nothing had a very weak quirk that was put to a dangerous use. All he could do was nullify weak electrical fields. Couldn't make them, couldn't control them, he could only nullify them. Altogether, not that dangerous. Hell, it's actually almost completely harmless. That was until he found out that he could nullify the weak electrical force that held together atoms. No electrical field, the atoms fall apart, which means that the molecules fall apart, so on and so forth. He would touch his victims and disables this force, which would turn them into a pile of dust. All he had to do was touch them, anywhere. Walking down the street, alone in their house, in the halls of their workplace. He was quick, he was efficient, and he was the best there was."
"So, how did they catch him, Majima-sensei?" Wow, even invisa-girl was asking questions, wasn't today just swell. Then again, this was probably the most interesting lecture he's ever given. Wasn't he supposed to be talking about arms dealing today? Back to the subject at hand, he looked at Hagakure, or whatever.
"Whoever said he was caught?" Eyes went wide all around at that little tidbit. "Over a course of 37 years, All or Nothing killed an estimated 10,000 people, both innocent civilians, police officers, politicians, pro heroes, and even a fair number of villains. After the 37th year, there were no further reports of any homicides that matched his modus operandi. He disappeared, no longer took any jobs, and is believed to have enjoyed a quiet retirement before eventually dying of natural causes."
He gave the class a moment to let that sink in before he moved on. "The last classification is power. What I mean by this is the desire for power in its purest state. Not a desire to rule, not a desire to cause harm, or to destroy, but straightforward, untainted, simple power. Power, simply for the sake of having it. And no one in the last 200 years has ever displayed this desire so purely, than All for One." Again, Izuku seemed strangely interested about this one. There's no way he's heard about this guy, he's been dead for a long, long time. "I am not at liberty to tell you what his quirk was. Not only was it purposely scrubbed from the annals of history for a damn good reason, I truly don't think that most of you would be able to understand his quirk. I'm not insulting your intelligence." That last part was said as he held up a hand, as Iida, Yaoyorozu, and even Bakugou started to argue with him. "It has nothing to do with how smart you are, but about how you were raised. This society has taught all of you a few base rules that can never, ever be broken, no matter what. The power that All for One held spits in the face of just about every single one of these rules."
"His true name has been lost to time, hell I'm probably the only one who knows what it was, and that's only because I did a few jobs for him back before he came up with the name. All you need to know, is that All for One was probably the greatest villain to have ever existed. His mere presence brought even the mightiest heroes to their knees, his views on philosophy could topple even the best arguments crafted by the world's leading scholars, and the power he wielded granted him the unofficial title… Of the world's Symbol of Evil." There we go. His students looked much more than simply scared, the looked horrified. Scarred, even. "He possessed a desire for power that could rival even the most determined man, and he would plunge his soul into the blackest, vilest pits of the last and most horrific circles of hell in order to achieve his goals."
No one asked him. No one asked about the fate of such a monster. They were too scared to know the answer. They've been through enough today, so he'll cut them a break. "Midoriya," He nodded at the boy, catching his attention, "What do you think happened to All for One?"
"He… Got away, didn't he? Just like All or Nothing, didn't he?" The boy was shaking like a leaf, as was a fair number of his other students. Hell, even Bakugou seemed to be pretty freaked out. But of course, he can't tell them that Midoriya was right. If these kids knew that a monster like All for One might still be running around, then word might get out that he's still kicking, and it would cause a panic. He hates doing it, especially when he's talking about important stuff, but he's gotta lie. So, what should he tell them? Make something up? Tell a partial truth, and just withhold some of the really important stuff? He very obviously can't talk about his own involvement in that whole mess. He'd get more than fired, he'd probably get arrested. Alright, partial truth it was.
"Thankfully, no." The whole class looked at him confused. "The hero society, at the time, was still just an idea. The hero system that was in place at the time was just an experiment. It wasn't cemented until one hero, greater than any who had ever walked the Earth, would one day kill All for One. That heroes name has also been removed from history, at the request of his fiancee, as the hero himself had died in his effort to take down All for One. Just like with everything else, I'm gonna keep that hero's name a secret. But this time, I'm doing it out of respect for the sacrifice of that brave hero."
They were quiet. Every last one of them, as quiet as the dead. Majima sat at his desk, taking a look at his now dried notes. Oh hey, they were supposed to be talking about how seemingly useless quirks could be used for evil in the hands of villains. That would have been a good topic to talk about. Hell, Majima could have had fun with that topic. Damnit, if only Yamada hadn't fucked up his notes, then maybe he would have been able to teach these kids something useful today. The bell rang, and his class quietly shuffled out the door. He took a drink of his now cold coffee.
He was going to get chewed the fuck out by Nezu later, he could already tell.