...so this is what happens when I scrap a draft for a Valentine's Day chapter AU. This story diverges from the canon after Koro-sensei performs a miracle in chapter 174 (for the anime viewers, it is S2E23). Standard disclaimers apply, as already stated in the terms of this site.
We never expected this to happen. No one could have imagined that Koro-sensei would be killed – no, slaughtered would be the better term – by the scientist, Yanagisawa.
Blue hair covered her sight as she was pushed down to the ground abruptly. Screams of fear and pain echoed as adrenaline pumped through her veins. What was going on? What was happening to the rest of Class E? A soft voice whispered in her ear, drowning out the other sounds, "K-Kayano? ...don't worry, you'll be fine. I'll–" …only to be cut off by a short gasp of pain, which was followed by silence. "Nagisa?" There was no answer.
Shortly after killing his former student and saving my life, Yanagisawa, who was thought to have died moments prior, saw an opening and used it to deliver the fatal blow on our tired teacher. Then, a bloodbath started. Yanagisawa, with his augmented abilities, struck swiftly and killed most of Class E. Only three of us were lucky – if you could call it that – to be alive: Ritsu, whose main body was safe in the classroom while her persona resided in my phone; Okuda, who had been shielded by Karma, and Rio – who protected the redhead; and me, who – was not in his line of sight because of him – was thought to have died after being drilled through by the Second God of Death's tentacle. As soon as Yanagisawa was out of sight, to boast of his murder no doubt, we moved to give our classmates and beloved teacher a better sending off. We settled to making a large fire pit and burning their bodies there. It was easy, preparing the pit; the difficult part was dragging their bodies there. Their faces of shock and fear, the blood on their uniforms and skin – I doubt we will ever forget this. Nagisa…
After putting out the fire, we slowly trudged our way down the mountain. Thankfully, we ran into no one, not a single one of the enemies we encountered were here anymore. With Ritsu's instructions, Okuda and I found ourselves in Karasuma-sensei's house, where Bitch-sensei welcomed us with a tight group hug and a shoulder to cry on. Karasuma-sensei eventually came by and told us of our current situation.
According to him, Yanagisawa had given the government the idea that we were brainwashed by Koro-sensei to protect him, and that the fire pit was meant as a warning that we were out to avenge him. The stupid officials gobbled it all up. Now, any survivor is known to be possibly armed and dangerous, to be captured dead or alive.
Karasuma-sensei suggested that he lead a false trail around the world to get rid of our potential killers, but we declined. We'd rather not lose anyone else. Why didn't you save yourself?
"What now?" Okuda asked after a lull in the conversation, and no one answered. What could we do? The world has been turned against us, and sooner or later, they'll find us. Thankfully, Karasuma-sensei managed to shake all suspicions off of him and Irina-sensei when they abandoned us in the safe room, but that doesn't mean much in the long run.
Are we really going to hide for the rest of our lives?
This is just the prologue to the main plot, but rest assured, the rest of the story has already been drafted, more or less. At present, this is a story of time travel, but if anyone suggests anything, I'm open to them. Right now, I'm just worrying if I would accept any of my drafts as passable enough to post. I apologize if the chapters are pretty short, and for my slow unpredictable updates.