Mental Instability FanFiction

Blackbird

Blackbird

F/F
F/M
M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Arthur Weasley, Alice Longbottom, Evan Rosier, Bellatrix Black Lestrange,
Tags
Slow Burn Not Canon Compliant Angst with a Happy Ending Hurt/Comfort Fluff and Angst Enemies to Lovers Mental Instability Emotional Roller Coaster Transphobia
If Bellatrix was surrounded by people like Sirius was would she have the same Chance of escaping and being her self highlighting how similar Bella and Sirius truly are and if they had an equal playing field whould it turn out differently
Blood Crown (Translation)

Blood Crown (Translation)

M/M
Multi
Other
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling Vampire: The Masquerade
Characters
Harry Potter, Remus Lupin, Sirius Black, Draco Malfoy/Harry Potter, Ron Weasley, Hermione Granger, Ginny Weasley, Tom Riddle | Voldemort, Albus Dumbledore, Harry Potter/Tom Riddle, Luna Lovegood, Sirius Black/Severus Snape,
Tags
Blood and Injury Blood and Violence Alternate Universe - Soulmates Vampires Alternate Universe Dark Harry Potter Dark Magic Mystical Creatures Mental Instability Fantasy Mental Breakdown Sadism
What happens when Harry is not raised with his family, and gets adopted by an enigmatic vampire?The shadow of a hero: when they left their savior in Dumbledore's hands, they brought about the downfall of wizarding supremacy.Will he become the hero ev...
The Undertow

The Undertow

F/F
F/M
Gen
M/M
Multi
Other
G
Updated
11.04.2025
Fandom
Original Work
Characters
Original Characters, Clement Ravenlaire, Samantha Ravenlaire, Nolan, Mr Devil
Tags
Grooming Emotional Manipulation Consensual Underage Sex Manipulation Crimes & Criminals Drug Use Underage Sex - Freeform Prostitution Pedophilia Mental Health Issues Mind Manipulation Dark Magic
Nolan grew up in crime filled neighborhoods. His only options where to either die trying to be a saint or to learn the crime and dominate. He dominates in the cybercrime scene, or at least he did until he messed with the wrong guy. Now he finds hi...
There's blood everywhere

There's blood everywhere

F/F
G
Updated
11.04.2025
Fandom
Original Work
Characters
Original Female Character(s), Original Female Character(s)/Original Female Character(s)
Tags
Unrequited Love Blood Implied/Referenced Suicide Bullying Kidnapping Homophobia Mental Instability Confusion Personality Swap not actually I don't know why I wrote this This Is Not Going To Go The Way You Think
Amy wakes up in a room. It's dark, there's blood. First time writing, this is really bad I just wanted to keep it saved somewhere :(I want to write in the futere so im just keeping record of my progress
Against All Odds

Against All Odds

F/F
F/M
Other
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Characters, Regulus Black, Original Female Character(s), Reader, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Marlene McKinnon, Dorcas Meadowes,
Tags
Fluff Angst Slow Burn Other Additional Tags to Be Added Blood and Gore Eventual Smut Consensual Underage Sex Emotional Hurt/Comfort Angst and Hurt/Comfort Gender Dysphoria Self-Harm Chronic Pain
Maximiliana Lykoudis is an introverted teenage girl navigating the challenges of losing her mother, and joining Hogwarts. Little do her peers know, Max harbours a secret—she's a werewolf. Battling her inner nature, she struggles to conceal her transf...
She Needs Hope.

She Needs Hope.

Multi
Other
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Dorcas Meadowes, Voldemort (Harry Potter), Evan Rosier, Barty Crouch Jr.,
Tags
Not Canon Compliant Character Death Murder Past Child Abuse Self-Harm Suicide Attempt Blood and Violence Attempted Sexual Assault Guilt Canon Compliant Child Abuse Alcohol Abuse/Alcoholism
Merlin, how time flies. If only Walburga could freeze time. When her little boys were 9 and 8, then she'd never have to see herself grow hateful for the boys that she once cradled.Her hands would one day be soaked in blood. But who's. She doesn't kno...
Evanescence

Evanescence

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Harry Potter, Ron Weasley, Hermione Granger, Tom Riddle | Voldemort, Dolores Umbridge, Albus Dumbledore, Harry Potter/Tom Riddle, Hermione Granger & Harry Potter & Ron Weasley, Harry Potter & Original Character(s)
Tags
BAMF Harry Potter Sort Of Mental Instability Hermione Granger is Always Right Tom Riddle is So Done Supportive Ron Weasley Horcrux Tom Riddle Original Ghost Character's Tom Riddle Needs a Hug Sitcom Ghost's acting as spies
After yet another near-death experience - this time, one that feels a little too close to final - Harry Potter begins seeing people who shouldn’t be there: ghosts that aren’t like the ones who roam Hogwarts’ halls. Ghosts that no one else seems to no...
Someone Cooked Here III: Just Desserts

Someone Cooked Here III: Just Desserts

F/F
G
Updated
11.04.2025
Fandom
明日方舟 | Arknights (Video Game)
Characters
Cardigan/Lappland (Arknights), Amiya/money (Arknights), Lappland (Arknights), Amiya (Arknights), Cardigan (Arknights)
Tags
Humor Attempt at Humor Drama Romance Conversations Homophobia Drama & Romance No Smut Mental Instability Useless Lesbians Awkward Conversations April Fools' Day
Lappland and Cardigan have Amiya over for lunch.The sequel that nobody asked for, to a story that nobody asked for.
When the World Feels Open.

When the World Feels Open.

F/F
G
Updated
11.04.2025
Fandom
プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game)
Characters
Hanasato Minori, Kiritani Haruka, Hanasato Minori/Kiritani Haruka
Tags
Depression Self-Harm The Author Regrets Everything Mental Health Issues Mental Instability Author Is Sleep Deprived Eating Disorders Lesbian Disaster Hanasato Minori Alternate Universe - Hospital Hanasato Minori Needs a Hug Kiritani Haruka Needs a Hug Autistic Kiritani Haruka
Haruka Kiritani, a former idol, and Minori Hanasato, a girl who loved too intensely, meet as patients in a mental hospital. Haruka, struggling with depression and the scars of the industry, finds herself wary of Minori’s boundless energy—until she wi...
To the Victor Goes the Spoils

To the Victor Goes the Spoils

F/F
F/M
M/M
G
Updated
11.04.2025
Characters
Eva Tsunaka/Diana Venicia (Project: Eden's Garden), Diana Venicia (Project: Eden's Garden), Eva Tsunaka (Project: Eden's Garden), Cassidy Amber (Project: Eden's Garden), Damon Maitsu/Kai Monteago (Project: Eden's Garden), Wenona/Ulysses Wilhelm (Project: Eden's Garden), Wolfgang Akire & Eva Tsunaka (Project: Eden's Garden), Damon Maitsu & Diana Venicia (Project: Eden's Garden), Wolfgang Akire & Diana Venicia (Project: Eden's Garden), Toshiko Kayura & Eva Tsunaka (Project: Eden's Garden), Minor Wolfgang Akire/Grace Madison (Project: Eden's Garden) - Relationship, evamon if you squint - Relationship,
Tags
Angst Slow Burn Other Additional Tags to Be Added It Gets Worse Before It Gets Better Unhealthy Relationships Unhealthy Coping Mechanisms Character Study Unreliable Narrator Internalized Homophobia Time Loop Mental Instability Project: Eden's Garden Chapter 1 Spoilers
Eva wins the trial.Just when Diana’s fully prepared to stare death in the face, what she does instead is wake up beside the Tree of Ignorance all over again. And again. And again.But that’s fine. It doesn’t matter. She’ll do anything as long as she f...
Fractured Minds

Fractured Minds

Gen
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling Marvel Cinematic Universe
Characters
Harry Potter, James "Bucky" Barnes
Tags
Angst BAMF Harry Potter Reincarnation Mental Instability Squib Harry Potter Harry Potter is James Buchanan "Bucky" Barnes
She Doesn't Get Out Much

She Doesn't Get Out Much

F/F
G
Updated
11.04.2025
Fandom
Law & Order: SVU
Characters
Olivia Benson, Alexandra Cabot (L&O: SVU), Alexandra Cabot/Casey Novak, Olivia Benson & Casey Novak, Casey Novak & Elliot Stabler, Casey Novak, Mary Clark (L&O: SVU), Elliot Stabler
Tags
Developing Relationship Slow Burn Recovery Implied/Referenced Self-Harm Character Study Mental Health Issues Mild Hurt/Comfort Lack of Communication Mental Instability Comfort Writing Exercise Healing
Months ago, Casey Novak and Alexandra Cabot were in the midst of a blossoming relationship. Then Alex was shot, and subsequently vanished without a word, leaving Casey to struggle with the sudden fall-out and the stress of her new job and lack of sup...
Barty Crouch Jr.'s Guide to Being Loved

Barty Crouch Jr.'s Guide to Being Loved

F/F
F/M
M/M
G
Updated
11.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, Mary Macdonald (Harry Potter), Marlene McKinnon, Severus Snape, Dorcas Meadowes, Marlene McKinnon/Dorcas Meadowes, Evan Rosier, Bartemius "Barty" Crouch Sr.,
Tags
Depression Unrequited Love Love Confessions Blood and Injury Blood and Gore Implied/Referenced Suicide Self-Harm Implied/Referenced Child Abuse References to Drugs Violence Aftermath of Violence Internalized Homophobia
It wasn't always easy being Barty Crouch Jr. The scarecrow son of the magnificent and envied Bartemius Crouch Sr.Yes, they carried the same name, had the same eyes, and similar-looking straw-coloured hair, but that really was where the similarities s...
"Won't You Stay With Me, My Darling, When the War Starts in My Heart?"

"Won't You Stay With Me, My Darling, When the War Starts in My Heart?"

F/F
M/M
G
Updated
11.04.2025
Fandom
Dandy's World (Roblox)
Characters
Cosmo & Sprout (Dandy's World), Cosmo (Dandy's World), Sprout (Dandy's World), Shelly (Dandy's World), Vee (Dandy's World), Looey (Dandy's World), Astro (Dandy's World), Rodger (Dandy's World), Toodles (Dandy's World), Dandy (Dandy's World), Tisha (Dandy's World), Shrimpo (Dandy's World),
Tags
Suicidal Thoughts Post-Traumatic Stress Disorder - PTSD It Gets Worse Before It Gets Better Trans Male Character Angst and Hurt/Comfort Self-Harm Complicated Relationships Past Relationship(s) Implied/Referenced Abuse Past Abuse Internalized Homophobia Mental Health Issues
Connie was always seen as a "failure" back when the show was going on, fucking up all the time. Dandy used her mistakes to manipulate and abuse her back then. This caused Connie to become mentally unstable, so when she starts a relationship with Ging...
“Bad prescription”

“Bad prescription”

F/F
F/M
M/M
Other
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Mary Macdonald (Harry Potter), Marlene McKinnon, Severus Snape, Dorcas Meadowes, Regulus Black & Sirius Black,
Tags
Angst and Hurt/Comfort Self-Harm Implied/Referenced Self-Harm Fluff and Angst Implied/Referenced Child Abuse Dead Dove: Do Not Eat Tags May Change Mental Health Issues Child Abuse POV Multiple Mental Instability POV James Potter
This is my first ff so dont expect to much, also english isnt my first language lol//Regulus Black has always known that silence is safer than words. Growing up in a house ruled by cruelty, he has mastered the art of staying invisible, of moving care...
I Want To Wilt

I Want To Wilt

F/F
G
Updated
11.04.2025
Fandom
Monster High (Cartoon 2010)
Characters
Venus McFlytrap/Robecca Steam, Venus McFlytrap, Robecca Steam, Rochelle Goyle, Jinafire Long, Operetta (Monster High), Skelita Calaveras, Headless Headmistress Bloodgood
Tags
Hurt/Comfort Suicide Attempt Comfort/Angst Mental Health Issues Mental Instability Mental Breakdown Hospitalization Visions
[ HEADCANON HEAVY ]Venus writes suicide letters to her best friends, being vague about the intention, but Robecca immediately knows something horrible is about to happen and runs to find her. The poor ghoul can't handle those awful visions anymore, a...
being saved from the darkness only to burn from the light

being saved from the darkness only to burn from the light

F/F
F/M
M/M
Other
G
Updated
11.04.2025
Fandom
僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
Characters
League of Villains (My Hero Academia), Class 1-A (My Hero Academia), Aizawa Shouta | Eraserhead/Yamada Hizashi | Present Mic, Jirou Kyouka/Yaoyorozu Momo, Bakugou Katsuki/Kirishima Eijirou, Midoriya Izuku/Todoroki Shouto, Kaminari Denki/Shinsou Hitoshi, Iida Tenya/Uraraka Ochako, Pro Heroes (My Hero Academia), Bubaigawara Jin | Twice/Toga Himiko
Tags
Slow Burn Eventual Smut Past Child Abuse Angst with a Happy Ending Fluff and Angst Sex Mental Instability Toga Himiko Needs a Hug Omega Verse Alternate Universe - Age Changes Omega Midoriya Izuku Alpha Shinsou Hitoshi
In the omegaverse version of MHA Toga and Denki are twin siblings, both are omegas who have lived thefirst 16years of their lives in a slave trade, underfed, underloved and abused they are sold at a slave auction to a strange homless looking man who...
Devil Child

Devil Child

Gen
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black, Regulus Black & Sirius Black, Walburga Black, Sirius Black & Walburga Black
Tags
Alternate Universe - Modern Setting Heavy Angst Psychological Trauma Character Study Mental Health Issues Child Abuse Marauders Era (Harry Potter) Survivor Guilt Schizophrenia Mental Instability Child Neglect religious trauma
“You must be careful, Sirius,” she told him one evening after dinner, her voice low but trembling with an intensity he had never heard before. Her grip on his arm tightened with a force he hadn’t known she was capable of. Her fingers dug into his ski...
i could tear you apart if i wanted.

i could tear you apart if i wanted.

F/F
G
Updated
11.04.2025
Fandom
Fruits Basket (Anime 2001) Fruits Basket - Takaya Natsuki (Manga) Fruits Basket (Anime 2019)
Characters
Reader, Sohma Akito/You, Sohma Akito/Reader, Sohma Akito
Tags
Yandere One-Sided Attraction Compulsory Heterosexuality Mental Instability Unrequited Crush If You Squint - Freeform Mentioned Sohma Shigure Nail Biting akito getting mad at shigure for spending time with someone and then wanting them to herself toxic yuri but it's still one-sided to be continued if i feel like it
akito despises her rotten mind and how it worships you against her sensibilities.alternate draft title: god versus dog.
Not-So-Hidden Thorns

Not-So-Hidden Thorns

Multi
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Severus Snape,
Tags
Angst Sexual Content Canon-Typical Violence Character Death Hurt/Comfort Emotional Hurt/Comfort Implied/Referenced Child Abuse Tags May Change Horny Teenagers Canonical Character Death Canon Compliant Period-Typical Homophobia
Bad actions cannot always be excused. But sometimes, they can be explained.ORThe Slytherin friend group we all “love to hate” (but not-so-secretly just love), their last three years at Hogwarts, and the choices they make - which are varying degrees o...