Third Person's POV
"He's delusional"
"Pathetic"
"Hey Deku!"
A loud, booming voice made a certain green haired teen look at his self-proclaimed friend. "If you really want to be a hero, why don't you take a swan dive on the rooftop? Pray and hope that maybe in your next life you'll get a quirk."
"Hey, isn't that a little too far?"
"Tsk! whatever, let's go."
With that, the blond bully and his underlings left, leaving a green haired guy wide eyed. Whilst in deep thought, he left the room a little later. Every steps the freckled teen does makes him remember all taunts and insults thrown onto him.
He only snapped into the current reality when he absentmindedly reached the pond where his book fell. He let out a tired sigh after seeing his notebook almost fully eaten by fishes. He didn't bothered to pick his treasured hard work anymore since it's completely destroyed. "Stupid fishes, that notebook isn't a food."
Just then, he found another notebook in black cover nearby. Out of curiosity, he picked it up. It surprised him that it's not even wet right after he picked it up. 'Must be waterproof.'
He turned the notebook, expecting the name of its owner. But what's written quite surprised him. "Death Note?" The sight of it got him wondering. 'Why is my notebook that got eaten? It took years of analyzing yet this notebook of a dumb prank survived? Talk about unfairness.'
Without knowing, he opened it to the first page. He looked around first, anticipating a camera filming him or someone looking at him with sardonic giggles. Seeing no one or any dumb camera, he turned his gaze back to the notebook and read what's written. "Rules?"
Reading it, he got weirded out. A large part of him is telling him that's it's just an oddly specific prank, a detailed one, and later he'll found himself on a video uploaded online that's recorded using a hidden camera he didn't spot earlier. He flipped to more pages to see if there's a name written on it. Finding nothing, he sighed.
However, there's still a small part of him that's saying, "just what if it's true"; of that's the case, he'll never let this book fall onto others' hand. Who knows what would happen if it fell onto a villain's grasp. Therefore, he hastily stored the notebook inside his backpack and decided to not take his usual route to go home.
Just as he was about to go near the tunnel, grey sludge-like liquid came out of the drainage. Turns out it is a person with a quirk that makes him a sludge or a quirk that allows him to turn into that sludge-like thingy; he realized it when he heard its terifying voice. "Damn that All Might!"
He's obviously terrified of it, making him abandon the idea of taking an odd route to go home and run fast, away from the liquid sewage. Unfortunately for him, the sludge person had heard him. "Medium size meat shield. You'll do well for now." It said as it began to chase the running broccoli. "Don't run kiddo and be my hero!"
The cinnamon made a mistake; he looked back, causing him to slow a little. He let out a yelp as he saw that it is about three meters away from him, ready to pounce on him.
"Smash!"
A big shockwave made him stumble. He covered his face because of the dusts that scattered. As dusts settled, he got a silhouette of the one who caused it. "It's okay. Why?" Hearing half of the famous catchphrase of his idol, a huge, bright smile developed on face, followed by a booming voice from the center of the shockwave that happened earlier. "Because I am here!"
"A-A-All Might!"
(Time skip to after their talk. Too lazy to write the same thing as canon.)
'So a quirk is what I really need to be a hero, huh? Too bad, I don't have one. So unfair... Why-' His thought got cut off when his phone vibrated. He took his phone out from his pocket to check the notification; it turned out that it's the same sludge villain from earlier with its name displayed on the "Nearby Villain Attacks" app, saying that it's (that he later learned that it's a he) on the loose after it escaped on the drainage from All Might's grasp.
Suddenly, a sickening idea came into his mind. He turned into an alley where security cameras from the buildings won't capture him. After he entered, he fished out the black notebook from earlier and reread its rules. After rereading it, he formed a conclusion.
'I can write the cause of death and the events before that person's death huh? If I write "a shark appearing from the ground and munched on that person", will that happen? It must be no, it's too ridiculous and unrealistic. Unless, of course, there's an interference of a quirk.' He shook his head to throw his thoughts away and began writing the sludge villain's name and the events before it dies, half-hoping that it's just a prank, because if it happened, he'll be a murderer.
'Odd though, I didn't hesitate to write.'
Right after doing so, a sound of explosions boomed, making him wince. His eyes widen as he stashed the notebook inside his bag. He then ran towards where the explosive sounds came from.
"I heard that's the villain All Might is chasing."
"Seriously? How could that get away from him?"
"We should wait for a suitable hero. Our quirks won't be helpful in this case."
"Poor kid..."
He looked at the center of the event and his eyes widened—if it could widen for more—after seeing who the hostage is. "K-Kacchan!"
Seeing the pained look that his childhood friend portrayed, he hurriedly ran towards him as he picked up a stone from the ground. Despite the Heroes' attempt on trying to stop him, he still managed to get close to the scene. He then threw the stone straight onto the villain's eye, making it loose its holding on Bakugo, and giving the blonde a break to breathe.
Midoriya then started to claw the sludge. But even with his futile attempt, it did nothing helpful to get the sludge off from his friend. "Deku! What are you doing here!"
"I don't know! My legs just moved on its own. And you looked like you needed help!"
"I really am pathetic. I can't even live out to my own words... Smash!"
Another shockwave, much bigger than what he witnessed earlier, made both of them hurl into the air. The heroes did their job to secure the civilians and to catch the two teens.
The strong punch hit something in the villain, that's why the scattered sludges slowly turned into human parts—scattered human parts and bunch of pool of bloods.
The sight of it petrified the onlookers and Heroes alike. Even the all mighty All might did not expected it to happen. Screams of the spectators sounded as they run away from the gory scene.
The Heroes' plan to scold a certain cinnamon roll faded and they tried to calm the people around. The people there didn't noticed the fact that All Might's punch changed the weather. Maybe they did but the terror of seeing too much blood and insides of a person dominated.
Deku looked at Kacchan, seeing him staring straight at All Might. Switching his gaze on All Might, he saw the similar surprised look he had. 'Sorry All Might and Kacchan. I didn't know that both of you will be involved here.'
He then looked at his surroundings, then at the people in chaos. Seeing this as a chance to escape the crime scene, he stood up and quickly left the chaotic place. Mind racing with the same thoughts
'It really happened! It really happened! It happened!'
He turned to another random alley and checked if there are security cameras or someone nearby. Confirming that there's none, he took the notebook out and read what he wrote.
"—Would attempt to enter someone that could cause fire—it won't affect him though. Heroes nearby couldn't get to him or capture him either because of the fire or his liquid body. A strong force would strike his brain that would cause a shockwave (kinda like All Might) and his quirk turning off. Dies from scattered body."
He scanned it again, body trembling. "I-it really happened... I'm now a murderer."
- - -
Walking in an empty street with both of his arm holding the straps of his backpack and his head lowed, a loud voice sounded. "I am here!"
"All Might!" Midoriya shouted with lesser enthusiasm than earlier. "The one and only! And I am here to-" The loud voice came into halt by bloody coughs. At the same time, the muscly body turned into a frail old man. "All Might! You okay?"
"Toshinori... Call me Toshinori in this form, and yes, I'm okay. How about you? How are you holding up after..."
"The whole bloody thing? I'm fine, I guess."
"All right, and as I'm saying..." All Might said before giving the greenette his speech. "Therefore, I deemed you worthy of this power in order for you to be the next Symbol of Peace!"
"I reject and I lied."
"Great! Oh wait, huh?"
"I reject your offer, All Might. After the whole gory incident, it got me thinking that I'm no hero material despite what you had just said earlier."
"But-"
"And I lied." The broccoli repeated before giving a bright yet fake smile. "I lied that I don't have a quirk, and it is..." He trailed of in the end as he walked near the frail blonde. Just then, he suddenly kicked him in the balls that caught him off guard. "All Mighty Kick Between Thighs!"
He watched as his idol fall onto the ground with sounds of pain. The freckled teen walked a few feet away before bowing. "Sorry for doing that. I'm not into heroics now. Farewell."