Serotonin
  • Reads 6,650
  • Votes 212
  • Parts 7
  • Time 3h 8m
  • Reads 6,650
  • Votes 212
  • Parts 7
  • Time 3h 8m
Ongoing, First published May 01, 2020
Just how bad could it be if one small change was added to Izuku Midoriya? 

When suffocated by the Sludge Villain years ago, an impairment of the area in his brain that produces 5% of the body's serotonin* occurred. He's placed on medication to ease the symptoms of his condition, Serotonin Deficiency, though not much comes from it. Energy-depleting side effects, overwhelming amounts of pressure, and shortening limits gnaw away at his potential and mental health. 

Though, that's not the only thing that aims to turn everything upside down. One day, a man puts a package in Inko's hands, requesting it to be given to her son. Once the contents and the sender become a reoccurring mystery, questions and questions pile up, and life begins draining like sand through Izuku's fingers. Head aching and hope running dry, it's only a matter of time before things quickly cross the line, and turning back is no longer an option.


*Serotonin is a chemical responsible for controlling mood, attention, sleep, and pain. (5% of which produced in your brain.) 


(Summary has been changed 10/1/20)

(Cover has been changed 1/22/21)

(4/21/21)- I am still continuing this story. Don't mind the length between now and the release date of the last chapter. I am back and working to get this and possibly another chapter out shortly.)


××ALL ART, INCLUDING THE COVER, IS MINE××

WARNING: Very graphic. Like, very. Probably shouldn't read if you are very squeamish or don't like death in general. There are also a lot of potential triggers in this, including suicidal thoughts and actions and overall violence.
This is a remake of an old story that sucked a s s.. 
All announcements are located in Chapter 0.
Don't know much about the publishing schedule. Things are a bit crazy rn, but I'll publish as soon as I can.

Please dont forget to vote and comment, let me know if you enjoy it or not! :p
All Rights Reserved
Sign up to add Serotonin to your library and receive updates
or
#151anti-hero
Content Guidelines
You may also like
Two Sides Of A Coin | Tododeku Villain AU ✓ by yeetermcskeeterbitch
38 parts Complete
Out patrolling with his father, Shoto Todoroki sees someone towering over the ledge of a broad building. Believing the boy will jump, Shoto scrambles to save him. That's when he encounters Midoriya for the first time. The young boy is reckless and arrogant, but something about him easily reels Shoto in. As they start talking, Midoriya abruptly ends their conversation, leaving his notebook behind. Mere hours later, Shoto tries to return the notebook, and meets Izuku instead. He's Midoriya's identical; there's no way Midoriya and Izuku are different people, right? Wrong. The more Shoto learns about the different personalities inhabiting Izuku Midoriya's body, the harder he seems to fall for the troubled villain/ anxious sweetheart. Midoriya works for the League of Villains, but something about the whole situation screams deceit. Is Midoriya truly evil? Can Izuku do the right thing, and push past his cowardice to serve the greater good? And can Shoto break free of his past, and start participating in life instead of watching from the sidelines? Two Sides of a Coin is a Tododeku Villain AU If your a homophobe or something, then just f*ck off. It's a boyxboy anime fanfic. Don't hate, just move on. Note Worthy: -playlist in the last chapter -i don't own any of the characters; they're all from MHA -cursing -touches on depression a bit: minor trigger warning maybe? -nothing too inappropriate, just a tad steamy (I'll give a heads up for people avoiding that kind of thing) -kiribaku tinee tiny bit -bakubitch -badass villain fights *punches air* -def doesn't follow plot of show/manga -honestly not enough Aizawa :( -complete
Villain's Origins || A Twist in Time [Boku no Hero Academia Villain Au Book 1] by bblehh1202
42 parts Complete Mature
WARNING: Viewer discretion advised. This story contains descriptions of murder, suicide, sex, and other mature content. Spoilers also ahead. ~~ What if Deku wasn't born quirkless? What if the reason for Katsuki's hurtful words had to do with the dark past Inko desperately tried to keep hidden from the outside world? What if becoming a hero wasn't the answer after all? ~~ My eyes widen. "I've decided. Young man, you will inherit my quirk." I let out a sigh of relief, laying down on the ground as my anxiety fades. I'm overwhelmed with joy, tears streaming down my face as my body is overcome with brutal exhaustion. I don't plan on using this power to become a hero, but All Might doesn't need to know that. I can't think of being a hero, or anything else for now. I need to get stronger, even stronger than my father. Wait for me mom, Kacchan, I'm coming. ~~ After that night, things only became harder for Izuku. The mental pressure was too much, to the extent that it took an unhealthy turn. Izuku could barely handle the pressure of having no one to rely on, torn between becoming a hero and being taught how to assassinate by the killer of heroes. It wasn't long before his sanity began to split. ~~ "It's okay. Honestly, you're the first person I've met who doesn't think my quirk is more suited to become a villain.." Shinsou said. After spending so much time with villains, I no longer thought of the word the same. "If you ask villains their story, you'll probably think they'd make pretty good protagonists. We always see things from the hero's perspective but we rarely ask how the villain ended up the way they are. The heroes are the real villains if you ask any villain, and even villains can be a hero to someone." ~~ I killed someone. I know he deserved it, yet I still couldn't look down at my own hands the same. Dried blood covered the bandages I wore around my wrists when I train with Stain. I had no choice but to accept it. I became a hero killer.
Not Too Different (MHA/BNHA) [undergoing editing] by NightlyGaely
46 parts Complete Mature
"You can't kill them! You're still a hero deep down!" The voices chorused, most familiar of them all was All Might's. "NO! I can't be a hero when everyone sees me as a villain! For killing YOU! It's your fault! Your fault!... I'll show them I'll be number one, I promise you that Toshinori Yagi." ... Izuku Midoriya is a student at UA, a top notch hero high school! He even gets mentored by the number one hero, All Might! Everything seemed so perfect after receiving his quirk and getting into UA. Until.... A day that no one ever hoped to even want had finally arrived. After All Mights death, the world was in shambles for our dear green haired protagonist, same with the well known Explosion teen. Being blamed for the Symbol's death, Izuku attempts suicide after finding his mom murdered and that Kacchan hates him now too. In doing so, he opens up a new path to take, one not written in the lines of law, but the ones who break them. Will he become the world's most feared villain or remain broken for all to see? Warning, this may contain: - DabiDeku (I'm aware of the age difference, if you are uncomfortable I'm sorry) - Masochist and Sadistic Izuku - Izuku has an odd blood obsession (kinda like Toga) - Dabi is Touya Todoroki (this was confirmed in the manga! OwO) - All For One is Izuku's dad because. Plot. - Smut 🍋 (it has been requested by an overwhelming amount of people... you sinners!) - Gore - Villain Deku - Depressing stuff?/suicide things - Shigaraki is Izuku's cousin - Alternate version of Izuku (there are two of him) - Angst? - Izuku has All For All UwU - PDA, like really cringy - Tiniest amount of BakuDeku (if you're only reading this story for bkdk, then uh... you'll be disappointed.) Highest ranks! - #1 depressingthoughts - #1 pda - #3 heroes Oh, btw, there is a sequel, it's called 'Back To School'. All MHA characters belong to Kōhei Horikoshi, others belong to me.
Falling (Depressed Deku Fanfic) (COMPLETE) by WholeLotOfDeku
18 parts Complete Mature
Ever since Izuku Midoriya joined U.A. High School and settled in, he knew that the League of Villains were after him and his quirk: One For All. However, when the time comes when Bakugo is the target and is only seconds away from being captured, Midoriya throws himself in the chaos and ends up saving Bakugo, only at the cost of his own safety as he is captured instead. Midoriya is brought back to the League of Villains' hideout and with him there, Shigaraki plans on changing the young boy's mindset and plans to use force against him. When Midoriya isn't able to escape for three years and no one can seem to find him, he begins to lose hope and his wounds only bleed more. Even when he goes back in time with the help of a pro hero's quirk, he is diagnosed with depression and struggles to go on through life. He doesn't feel like himself. He needs someone. He needs someone so badly. But what if there isn't anybody to help Midoriya? How will Midoriya cope when someone close to him dies right in his arms? Warning! This story will contain depression, suicide talk, torture (not explained explicitly), violence, and a whole lot of angst! Also, this story won't contain any ships. So, there isn't any BakuDeku, TodoDeku, etc., it's just a depressing story with Midoriya with his friends trying to change themselves to help him and their own selves in the future. Ranks! #5 - depresseddeku (11/25/19) #65 - deku (8/23/19) #26 - majorcharacterdeath (8/31/19) lol Story Status: Complete! Started on: 4/17/2019 Completed on: 3/7/2020 Started Editing on: 1/30/20 I do not own the cover art! But I own the art in the book! My Hero Academia/Boku No Hero Academia (c) Kohei Horikoshi
Pick a Side /Villain! Deku/ ✔ by oldcringeaccount11
12 parts Complete
"Do you think.... That I could be a hero too? Even... without a quirk?" "Without a quirk? Not happening, kid." All his life Izuku Midoriya dreamed of becoming a hero just like his biggest inspiration, All Might. It didn't matter if he was quirkless... Right? One day, the young boy got to meet his hero. He asks the question he'd been dying to ask, but afraid of knowing the answer nevertheless. The answer crushed him. That was the day he let go of his dreams. Izuku Midoriya, the quirkless loser. That's what he'd always be. No one believed in him anymore. Not even himself. Until... The league of villains offered him acceptance. They told him that he WAS good enough. But does Midoriya truly belong as a villain? It may be time for him to pick to side... COMPLETED/ August 14, 2019 !Trigger Warning! This story contains blood, violence, gore, strong language, and some sadistic stuff I guess? xD Read at your own risk! Cover image art isn't mine, however, I did do the editing for it! Also, the characters in this fanfiction aren't mine at all either! [Okay, so ships. There is Tododeku and Bakudeku in here. But to be clear, it's not a huge part of the plot so if you came here for it, you might be somewhat disappointed, which is why I'm saying it. I got rid of the tags for them cuz I didn't want to disappoint people but now people think this is a straight story somehow so I'm putting the tags back out to weed out the homophobes B)]
It's So Good To Be Bad Villain Izuku AU by Yesimdisgusting
18 parts Complete Mature
Izuku has been bullied since a young age such as beating to a pulp, almost rape by his classmates because of his cute little face been abandon by his childhood friend katsuki been told by his hero he cant be a hero unless you have a quirk Growing up without a father leading him weak and defenceless not knowing how to fight is one of the reasons which leads to his bullying His mind wasn't thinking straight his classmates tells him he should die he wasn't good enough that was stuck in his head over and over again that makes it a mantra a nightmare. everytime he awakes and asleep thats always in his mind like hell even his teachers "useless! " "a hero without a quirk dream on!! " "shity deku! you think you can surpass me!? " "oh! you mean midoriya? he can die like i care! " At the 13 of age a new school begins Another day another year izuku lowered his head down while walking towards his school he knows all of those nasty comments he doesn't even care anymore since its always like that ever since he was announce a quirkless He raise his head up only to notice a rusty old gem laying in a shop it looks ugly its true but in the end he buys it anyways but unknown to him that this little gem will change his mind and soul and also fate and future forever ******BOOK ABANDON******* i will follow some plot from boku no hero academia and also it might change after all fate can change and also destiny p. s this includes *gore *sexual content ( ͡° ͜ʖ ͡°) *wrong spelling and Grammar *etc. *i don't own any of this pictures those are belong to their rightful owner
You may also like
Slide 1 of 10
Two Sides Of A Coin | Tododeku Villain AU ✓ cover
Villain's Origins || A Twist in Time [Boku no Hero Academia Villain Au Book 1] cover
Call me Usagi! I am not Deku anymore!! cover
Eye Spy  cover
Not Too Different (MHA/BNHA) [undergoing editing] cover
Mastermind: Strategist For Hire cover
Falling (Depressed Deku Fanfic) (COMPLETE) cover
A Femboy To Rember cover
Pick a Side /Villain! Deku/ ✔ cover
It's So Good To Be Bad Villain Izuku AU cover

Two Sides Of A Coin | Tododeku Villain AU ✓

38 parts Complete

Out patrolling with his father, Shoto Todoroki sees someone towering over the ledge of a broad building. Believing the boy will jump, Shoto scrambles to save him. That's when he encounters Midoriya for the first time. The young boy is reckless and arrogant, but something about him easily reels Shoto in. As they start talking, Midoriya abruptly ends their conversation, leaving his notebook behind. Mere hours later, Shoto tries to return the notebook, and meets Izuku instead. He's Midoriya's identical; there's no way Midoriya and Izuku are different people, right? Wrong. The more Shoto learns about the different personalities inhabiting Izuku Midoriya's body, the harder he seems to fall for the troubled villain/ anxious sweetheart. Midoriya works for the League of Villains, but something about the whole situation screams deceit. Is Midoriya truly evil? Can Izuku do the right thing, and push past his cowardice to serve the greater good? And can Shoto break free of his past, and start participating in life instead of watching from the sidelines? Two Sides of a Coin is a Tododeku Villain AU If your a homophobe or something, then just f*ck off. It's a boyxboy anime fanfic. Don't hate, just move on. Note Worthy: -playlist in the last chapter -i don't own any of the characters; they're all from MHA -cursing -touches on depression a bit: minor trigger warning maybe? -nothing too inappropriate, just a tad steamy (I'll give a heads up for people avoiding that kind of thing) -kiribaku tinee tiny bit -bakubitch -badass villain fights *punches air* -def doesn't follow plot of show/manga -honestly not enough Aizawa :( -complete