Tags
These are some of the most popular tags used in the collection.
- 1990s
- 20th Century
- 21st Century
- Abandoned Work - Unfinished and Discontinued
- Abandonment
- Abduction
- Ableism
- Abortion
- Abuse
- Abused Leonardo (TMNT)
- Acceptance
- Accidental Cuddling
- Action
- Action & Romance
- Action/Adventure
- Addiction
- Adopted Children
- Adoption
- Adventure
- AFAB | Assigned Female at Birth Reader-Insert
- Affection
- Age Regression/De-Aging
- Aged-Up Character(s)
- Aged-Up Mutant Ninja Turtles
- Agent John Bishop Being an Asshole (TMNT)
- Aggression
- Alcohol
- Alcohol Abuse/Alcoholism
- Alien Technology
- Aliens
- Alpha/Beta/Omega Dynamics
- Altered Mental States
- Altered States
- Alternate Universe
- Alternate Universe - Canon
- Alternate Universe - Canon Divergence
- Alternate Universe - Fantasy
- Alternate Universe - Fusion
- Alternate Universe - Gender Changes
- Alternate Universe - Human
- Alternate Universe - Pacific Rim Fusion
- Alternate Universe - Science Fiction
- Ambiguity
- Ambiguous Relationships
- Amputation
- Anal
- Anal Fingering
- Anal Play
- Anal Sex
- Anger
- Anger Management
- Angry Donatello (TMNT)
- Angry Leonardo (TMNT)
- Angry Raphael (TMNT)
- Angst
- Angst and Feels
- Angst and Fluff and Smut
- Angst and Humor
- Angst and Hurt/Comfort
- Angst and Porn
- Angst and Romance
- Angst and Tragedy
- Angst with a Happy Ending
- Animals
- Anxiety
- Anxiety Attacks
- AO3 Tags - Freeform
- Apocalypse
- April O'Neil is Bad at Feelings (TMNT)
- April O'Neil-centric (TMNT)
- Arguing
- Arson
- Art
- Asian Character(s)
- Ass Play
- Assault
- Attempt at Humor
- Attempted Murder
- Attempted Rape/Non-Con
- Attempted Sexual Assault
- Attention Deficit Hyperactivity Disorder
- Attraction
- Aunts & Uncles
- Author Is Sleep Deprived
- Autism
- Autism Spectrum
- Autistic Characters
- Autistic Donatello (TMNT)
- Awkward Crush
- Awkward Donatello (TMNT)
- Awkward Flirting
- Awkward Raphael (TMNT)
- Awkward Romance
- Awkwardness
- Babies
- Background Relationships
- Bad Boys
- Bad Flirting
- Bad Parent Splinter (TMNT)
- Bad Parenting
- Bad Sibling Donatello (TMNT)
- Bad Sibling Michelangelo (TMNT)
- Bad Spelling & Grammar
- Badass
- Badass | BAMF Reader-Insert
- Banter
- Baron Draxum Tries (TMNT)
- Baron Draxum Tries to Be a Good Parent (TMNT)
- Bathing/Washing
- Battle Nexus Champion Leonardo (TMNT)
- BDSM
- Beach Sex
- Beaches
- Begging
- Best
- Best Friends
- Betrayal
- Big Brothers
- Bigotry & Prejudice
- Biology
- Birthday
- Birthday Fluff
- Bisexual Character
- Bisexual Donatello (TMNT)
- Bisexual Female Character
- Bisexual Leonardo (TMNT)
- Bisexual Male Character
- Bisexual Miyamoto Usagi
- Bisexual Raphael (TMNT)
- Bisexuality
- Biting
- Blades
- Blood
- Blood and Gore
- Blood and Injury
- Blood and Violence
- Blow Jobs
- Bodily Fluids
- Body Horror
- Body Image
- Body Part Kinks
- Bondage
- Bonding
- Bottom Leo
- Bottom Leonardo (TMNT)
- Bottom Michelangelo (TMNT)
- Bottom Raphael
- Bottom Raphael (TMNT)
- Bottoming
- Boxing & Fisticuffs
- Boys' Love
- Brain Damage
- Brainwashing
- Break Up
- Breaking Up & Making Up
- Breeding Kink
- Broken Promises
- Brother Feels
- Brother-Sister Relationships
- Brother/Brother Incest
- Brotherhood
- Brotherly Affection
- Brotherly Angst
- Brotherly Bonding
- Brotherly Love
- Brothers
- Bubble Bath
- Bugs & Insects
- Bullying
- Camping
- Cannibalism
- Canon - Cartoon
- Canon Autistic Character
- Canon Compliant
- Canon Related
- Canon Universe
- Canon-Typical Violence
- Canonical Character Death
- Card Games
- Carrying
- Casey Jones is a Little Shit (TMNT)
- Casey Jones is Not Okay (TMNT)
- Casey Jones Needs a Hug (TMNT)
- Casey Jones-centric (TMNT)
- Caught
- Character Death
- Character Undeath
- Characters Being Bad at Feelings
- Characters in Love
- Chatting & Messaging
- Cheating
- Chef Michelangelo (TMNT)
- Chefs
- Child Abuse
- Child Death
- Child Neglect
- Child Reader-Insert
- Childhood Friends
- Childhood Trauma
- Children
- Choices
- Choose Your Own Adventure
- Choose Your Own Ending
- Christmas
- Christmas Fluff
- Chronic Pain
- Cleaning
- Cloaking Brooches (TMNT)
- Cockroaches
- Codependency
- Coercion
- Cold
- Cold Weather
- Collaboration
- Coma
- Comatose Leonardo (TMNT)
- Come Eating
- Come Shot
- Come Swallowing
- Comedy
- Comeplay
- Comfort
- Comfort/Angst
- Comic Book Violence
- Coming of Age
- Coming Out
- Communication
- Competition
- Complete
- Confessions
- Confidence
- Consensual
- Consensual Sex
- Consensual Underage Sex
- Consent
- Consent Issues
- Cooking
- Coping
- Couch Cuddles
- Couches
- Crack
- Crack Crossover
- Crack Treated Seriously
- Crazy
- Crimes & Criminals
- Cross-Post
- Cross-Posted on Wattpad
- Crossing Parallels
- Crossover
- Crossover Pairings
- Crossovers & Fandom Fusions
- Cruise Ships
- Crush at First Sight
- Crushes
- Crying
- Cuddling & Snuggling
- Culture
- Cute
- Cute Donatello (TMNT)
- Cute Michelangelo (TMNT)
- Daddy Issues
- Dancer Mike Shinoda
- Dancing
- Dancing and Singing
- Dark
- Dark Magic
- Daughters
- Dead Dove: Do Not Eat
- Dead Splinter (TMNT)
- Death
- Decapitation
- Decisions
- Declarations Of Love
- Dehumanization
- Delusions
- Demonic Possession
- Demons
- Denial
- Denial of Feelings
- Depressed Leonardo (TMNT)
- Depressed Splinter (TMNT)
- Depressing
- Depression
- Dessert & Sweets
- Developing Friendships
- Developing Relationship
- Dialogue
- Difficult Decisions
- Digital Art
- Dildos
- Dimension Travel
- Dimension X (TMNT)
- Dirty Talk
- Disaster Twins Donatello and Leonardo (TMNT)
- Discussion of Abortion
- Dismemberment
- Disordered Eating
- Dissociation
- Doctor Delicate Touch (TMNT)
- Doctor Donatello (TMNT)
- Doctor Feelings (TMNT)
- Doctor Leonardo (TMNT)
- Doctors & Physicians
- Dom Leonardo (TMNT)
- Dom Raphael (TMNT)
- Dom/sub
- Domestic
- Domestic Fluff
- Domestic Violence
- Dominance
- Don't Judge Me
- Donatello and Leonardo are Twins (TMNT)
- Donatello Has Anxiety (TMNT)
- Donatello Has Issues (TMNT)
- Donatello Has Self-Esteem Issues (TMNT)
- Donatello is a Little Shit (TMNT)
- Donatello is Bad at Feelings (TMNT)
- Donatello Needs a Break (TMNT)
- Donatello Needs a Hug (TMNT)
- Donatello Uses Sign Language (TMNT)
- Donatello-centric (TMNT)
- Doppelganger
- Dork Leonardo (TMNT)
- Dorkiness
- Dorks
- Dorks in Love
- Double Penetration
- Double Penetration in Two Holes
- Doubt
- Drabble
- Drama
- Drama & Romance
- Drawing
- Dreams and Nightmares
- Drug Addiction
- Drug Use
- Drugs
- Drunken Confessions
- Drunken Flirting
- Drunken Shenanigans
- Drunkenness
- Dry Humping
- Dubious Consent
- During Canon
- Dysfunctional Family
- Dysphoria
- Early Mornings
- Eating Disorders
- Education
- Eggs
- Ejaculate
- Embarrassment
- Emotional
- Emotional Baggage
- Emotional Constipation
- Emotional Hurt
- Emotional Hurt/Comfort
- Emotional Manipulation
- Emotional/Psychological Abuse
- Emotions
- End of the World
- Enemies
- Enemies to Friends
- Enemies to Friends to Lovers
- Enemies to Lovers
- English Is Not The Author's First Language
- Enthusiastic Consent
- Episode Style
- Episode: s01e17
- Episode: s01e17 TCRI (TMNT 2012)
- Episode: s01e21a Man Vs. Sewer
- Episode: s02e03b Lair Games
- Episode: s03e21
- Episode: s03e21 Same As It Never Was
- Episode: s04e08
- Episode: s04e08 Bad Day (TMNT 2003)
- Established Relationship
- Eventual Fluff
- Eventual Happy Ending
- Eventual Romance
- Eventual Smut
- Everyone Is Gay
- Everyone Needs A Hug
- Everything is Beautiful and Nothing Hurts
- Exhibitionism
- Experimentation
- Explicit Language
- Explicit Sexual Content
- Fake Science
- Falling In Love
- Familial Abuse
- Family
- Family Bonding
- Family Drama
- Family Dynamics
- Family Feels
- Family Fluff
- Family Issues
- Family Member Death
- Fanart
- Fanfiction
- Fantasy
- Farmhouse Arc (TMNT 2012)
- Fate
- Fate & Destiny
- Father Figures
- Father-Son Relationship
- Father/Son Incest
- Fatherhood
- Fear
- Fear of Death
- Feelings
- Feelings Realization
- Feels
- Female Characters
- Female Homosexuality
- Female Leonardo (TMNT)
- Female Reader-Insert
- Female Relationships
- Feral Behavior
- Fiction
- Fights
- Fingerfucking
- Fire
- First Crush
- First Kiss
- First Love
- First Meetings
- First Time
- Firsts
- Fist Fights
- Fivesome
- Fivesome - F/M/M/M/M
- Fix-It
- Fix-It of Sorts
- Flash Fic
- Flash Forward
- Flashbacks
- Flirting
- Fluff
- Fluff and Angst
- Fluff and Crack
- Fluff and Humor
- Fluff and Hurt/Comfort
- Fluff and Smut
- Fluff without Plot
- Fluffy Ending
- Food
- Food Fight
- Food Issues
- Foot Clan (TMNT)
- Forbidden
- Forbidden Love
- Forehead Kisses
- Forgiveness
- Found Family
- Freedom
- Freeform
- Frenemies
- Friends to Lovers
- Friendship
- Friendship/Love
- Frottage
- Frustration
- Fun
- Funny
- Fur
- Furniture
- Furry
- Future
- Gags
- Games
- Gang Rape
- Gaslighting
- Gay
- Gay Character
- Gay Disaster Leonardo (TMNT)
- Gay Leonardo (TMNT)
- Gay Male Character
- Gay Panic
- Gay Sex
- Gender Dysphoria
- Gender Themes
- Gender-Neutral Pronouns
- Genetic Disorders & Abnormalities
- Genetic Engineering
- Genetics
- Gentle Kissing
- Gentleness
- Getting Back Together
- Getting Together
- Ghostbusting (Ghostbusters)
- Ghosts
- Girl Saves Boy
- Good
- Good Friend April O'Neil (TMNT)
- Good Friend Casey Jones (TMNT)
- Good Older Sibling April O'Neil (TMNT)
- Good Older Sibling Donatello (TMNT)
- Good Older Sibling Leonardo (TMNT)
- Good Older Sibling Raphael (TMNT)
- Good Parent Big Mama (TMNT)
- Good Parent Leonardo (TMNT)
- Good Parent Splinter (TMNT)
- Good Parenting
- Good Person Oroku Saki | Shredder
- Good Sibling April O'Neil (TMNT)
- Good Sibling Donatello (TMNT)
- Good Sibling Leonardo (TMNT)
- Good Sibling Michelangelo (TMNT)
- Good Sibling Raphael (TMNT)
- Good Younger Sibling Michelangelo (TMNT)
- Gore
- Graphic Description
- Grief/Mourning
- Grinding
- Growing Up
- Growth
- Guilt
- Guilty Leonardo (TMNT)
- Halloween
- Hallucinations
- Hand Jobs
- Hands
- Happy Ending
- Hardcore
- Harm to Children
- Hatred
- Having Faith
- He/Him and She/Her Pronouns for Raphael (TMNT)
- He/Him Pronouns for Raphael (TMNT)
- Head Injury
- Headcanon
- Headcanon Accepted
- Healing
- Heavy Angst
- Height Differences
- Help
- Heroes & Heroines
- Het
- Het and Slash
- Heterosexuality
- High School
- Hijinks & Shenanigans
- Historical
- Historical Inaccuracy
- Holding Hands
- Holidays
- Homecoming
- Homelessness
- Homophobia
- Homosexuality
- Hope
- Horniness
- Horny Teenagers
- Horror
- Hot
- How Do I Tag
- Huddling For Warmth
- Hugs
- Human
- Human Experimentation
- Human Leonardo (TMNT)
- Human Raphael
- Human Turtles (TMNT)
- Human/Monster Romance
- Human/Turtle Relationships (TMNT)
- Humiliation
- Humor
- Hurt
- Hurt April O'Neil (TMNT)
- Hurt Casey Jones (TMNT)
- Hurt Donatello (TMNT)
- Hurt Leonardo (TMNT)
- Hurt Michelangelo (TMNT)
- Hurt No Comfort
- Hurt Raphael (TMNT)
- Hurt Raphael Santiago
- Hurt Splinter (TMNT)
- Hurt/Comfort
- I Can't Believe I Wrote This
- I Don't Even Know
- I Made Myself Cry
- I Will Go Down With This Ship
- I Wrote This Instead of Sleeping
- I'm Bad At Summaries
- I'm Bad At Tagging
- I'm Bad At Titles
- I'm Going to Hell
- I'm Sorry
- Ice Cream
- Idiots in Love
- Illnesses
- Illustrations
- Imagination
- Implied Mind Rape
- Implied/Referenced Abuse
- Implied/Referenced Brainwashing
- Implied/Referenced Cannibalism
- Implied/Referenced Character Death
- Implied/Referenced Cheating
- Implied/Referenced Child Abuse
- Implied/Referenced Drug Use
- Implied/Referenced Homophobia
- Implied/Referenced Rape/Non-con
- Implied/Referenced Self-Harm
- Implied/Referenced Torture
- Imprisonment
- In Public
- Incest
- Infidelity
- Injury
- Inner Dialogue
- Innuendo
- Insanity
- Insecurity
- Insomnia
- Insomniac Leonardo (TMNT)
- Inspired by Music
- Inspired by Real Events
- Inspired by...
- Intense
- Interactive
- Internal Monologue
- Intersex
- Intersex Donatello (TMNT)
- Intersex Leonardo (TMNT)
- Intersex Raphael (TMNT)
- Interspecies
- Interspecies Relationship(s)
- Interspecies Romance
- Intoxication
- Issues
- It Gets Worse Before It Gets Better
- Japan
- Japanese Character(s)
- Japanese Culture
- Japanese Mythology & Folklore
- Jealous Donatello (TMNT)
- Jealous Leonardo (TMNT)
- Jealous Raphael
- Jealousy
- Jokes
- Kaiju
- Kaiju (Pacific Rim)
- Kidnapping
- Killing
- Kinks
- Kinky
- Kissing
- Knives
- Language
- Lapdance
- Late at Night
- Laughter
- Laughter During Sex
- Law Enforcement
- Leadership
- Lemon
- Leo Needs a Hug
- Leonardo and Raphael Fight (TMNT)
- Leonardo Angst (TMNT)
- Leonardo Has a Bad Time (TMNT)
- Leonardo Has Anxiety (TMNT)
- Leonardo Has Issues (TMNT)
- Leonardo Has PTSD (TMNT)
- Leonardo Has Self-Esteem Issues (TMNT)
- Leonardo is a Little Shit (TMNT)
- Leonardo is Bad at Flirting (TMNT)
- Leonardo Needs a Hug (TMNT)
- Leonardo Needs Sleep (TMNT)
- Leonardo-centric (TMNT)
- Lesbian April O'Neil (TMNT)
- Lesbian Character
- LGBTQ Character
- LGBTQ Female Character
- LGBTQ Themes
- Light Angst
- Light-Hearted
- Like
- Lime
- Loneliness
- Long Shot
- Loss
- Lost Love
- Love
- Love at First Sight
- Love Bites
- Love Confessions
- Love Triangles
- Love/Hate
- Lovers
- Loyalty
- Mad Science
- Madness
- Magic
- Major Character Injury
- Major Character Undeath
- Major Illness
- Major Original Character(s)
- Makeover
- Making Out
- Making Up
- Male Bonding
- Male Homosexuality
- Male Homosociality
- Male Slash
- Male-Female Friendship
- Manipulation
- Marking
- Marriage
- Marriage Proposal
- Martial Arts
- Master/Pet
- Master/Slave
- Masters
- Masturbation
- Mates
- Mating
- Mating Bites
- Mating Bond
- Mating Cycles
- Mating Cycles/In Heat
- Mating Rituals
- Matter of Life and Death
- Medic Leonardo (TMNT)
- Medical
- Medical Experimentation
- Medical Professionals
- Mediocre Parent Splinter (TMNT)
- Meet-Cute
- Memes
- Memories
- Memory Alteration
- Memory Loss
- Memory Related
- Menstruation
- Mental Coercion
- Mental Health Issues
- Mentioned Baron Draxum (TMNT)
- Mentioned Casey Jones (TMNT)
- Mentioned Mona Lisa (TMNT)
- Mentioned Señor Hueso (TMNT)
- Mentioned Splinter (TMNT)
- Michelangelo Angst (TMNT)
- Michelangelo Cooks (TMNT)
- Michelangelo Has ADHD (TMNT)
- Michelangelo is Not Okay (TMNT)
- Michelangelo Needs a Hug (TMNT)
- Michelangelo-centric (TMNT)
- Middle Sibling Donatello (TMNT)
- Mild Gore
- Mild Language
- Mild Sexual Content
- Mild Smut
- Mind Break
- Mind Control
- Mind Rape
- Minor Character Death
- Minor Character(s)
- Minor Donatello/April O'Neil (TMNT)
- Minor Mona Lisa/Raphael (TMNT)
- Miracles
- Missions
- Mistakes
- Molestation
- Moral Lessons
- Morality
- Morbid
- Moresomes
- Morning Kisses
- Mornings
- Mother-Daughter Relationship
- Motherhood
- Mouth Kink
- Movie Night
- Movie: Rise of the Teenage Mutant Ninja Turtles (2022)
- Movie: Teenage Mutant Ninja Turtles (2014)
- Movie: Teenage Mutant Ninja Turtles II: The Secret of the Ooze (1991)
- Movie: Teenage Mutant Ninja Turtles III (1993)
- Movie: Teenage Mutant Ninja Turtles: Out of the Shadows (2016)
- Mpreg | Male Pregnancy
- Multiple Penetration
- Multiple Pronouns for Raphael (TMNT)
- Multiverse
- Murder
- Music
- Musical Instruments
- Musical References
- Musicals
- Mutagen (TMNT)
- Mutant Apocalypse (TMNT)
- Mutant Powers
- Mutant Reader-Insert (X-Men)
- Mutants
- Mutants (X-Men)
- Mutation
- Mutilation
- Mutual Non-Con
- Mutual Pining
- Muzzle Kink
- Muzzles
- My First AO3 Post
- My First Fanfic
- My First Fanwork
- My First Smut
- My First...
- Mystic Michelangelo (TMNT)
- Mystic Powers (TMNT)
- Mythical Beings & Creatures
- Mythology
- Names
- Near Death
- Neck Kissing
- Necks
- Necromancy
- Neglect
- Negotiations
- Nerdiness
- Neurodivergent Turtles (TMNT)
- Neurodiversity
- New Year's Eve
- New Year's Kiss
- New Years
- Next Generation
- Next-Gen
- Nicknames
- Nightmares
- Nighttime
- Ninja
- No Incest
- No Romance
- No Smut
- No Spoilers
- No Turtlecest (TMNT)
- No Use of Y/N for Reader-Insert
- Non-Canon Relationship
- Non-Consensual
- Non-Consensual Bondage
- Non-Consensual Drug Use
- Non-Consensual Touching
- Non-Explicit
- Non-Explicit Sex
- Non-Sexual
- Nonverbal Communication
- Nostalgia
- Not Actually Unrequited Love
- Not Beta Read
- Not Canon Compliant
- Not Suitable/Safe For Work
- NSFW Art
- Nuzzling
- Obsession
- Oh My God
- Older Sibling April O'Neil (TMNT)
- Older Sibling Casey Jones (TMNT)
- Older Sibling Donatello (TMNT)
- Older Sibling Leonardo (TMNT)
- Older Sibling Michelangelo (TMNT)
- Older Sibling Raphael (TMNT)
- One Big Happy Family
- One Shot
- One Shot Collection
- One-Sided Attraction
- One-Sided Relationship
- Oneshot Prompts Challenge
- Oral Sex
- Organized Crime
- Original Character Death(s)
- Original Character-centric
- Original Character(s)
- Originally Posted on Tumblr
- Oroku Saki | Shredder Being an Asshole
- Other Additional Tags to Be Added
- Other: See Story Notes
- Out of Character
- Outer Space
- Overprotective
- Overprotective Donatello (TMNT)
- Overprotective Leonardo (TMNT)
- Overprotective Michelangelo (TMNT)
- Overprotective Raphael (TMNT)
- Pain
- Painful Sex
- Panic
- Panic Attacks
- Pansexual Character
- Pansexual Michelangelo (TMNT)
- Parades
- Paranoia
- Paranormal
- Parent Baron Draxum (TMNT)
- Parent Big Mama (TMNT)
- Parent Leonardo (TMNT)
- Parent Splinter (TMNT)
- Parent-Child Relationship
- Parent/Child Incest
- Parenthood
- Party
- Party Games
- Past
- Past Abuse
- Past Brainwashing
- Past Character Death
- Past Child Abuse
- Past Drug Addiction
- Past Mind Control
- Past Sexual Abuse
- Past Torture
- Patricide
- Pedophilia
- Penetrative Sex
- Personal Growth
- Pet Names
- Phobias
- Photography
- Physical Abuse
- Pining
- Pizza
- Platonic Cuddling
- Platonic Relationships
- Polyamorous Character
- Polyamory
- Polyamory Negotiations
- Pop Culture
- Porn
- Portals
- Possession
- Possessive Behavior
- Possessive Leonardo (TMNT)
- Possessive Raphael (TMNT)
- Possessive Sex
- Possibly Unrequited Love
- Post-Apocalypse
- Post-Canon
- Post-Canon Fix-It
- Post-Movie: Rise of the Teenage Mutant Ninja Turtles (2022)
- Post-Movie: Teenage Mutant Ninja Turtles: Out of the Shadows (2016)
- Post-Season/Series
- Post-Season/Series 02
- Post-Traumatic Stress Disorder - PTSD
- Post-Zombie Apocalypse
- Posted Elsewhere
- POV Multiple
- POV Second Person
- POV Third Person
- Poverty
- Pranks and Practical Jokes
- Pre-Canon
- Pre-Movie: Frozen 2 (2019)
- Pre-Movie: Rise of the Teenage Mutant Ninja Turtles (2022)
- Pregnancy
- Pride Parades
- Promises
- Prostitution
- Protective Casey Jones (TMNT)
- Protective Donatello (TMNT)
- Protective Leonardo (TMNT)
- Protective Michelangelo (TMNT)
- Protective Older Brothers
- Protective Parents
- Protective Raphael
- Protective Raphael (TMNT)
- Protective Siblings
- Protective Splinter (TMNT)
- Protectiveness
- Psychological Horror
- Psychological Trauma
- Psychology
- Puberty
- Public Sex
- Purple Dragons (TMNT)
- Rape
- Rape Recovery
- Rape/Non-con Elements
- Raphael Has a Fear of Bugs (TMNT)
- Raphael Has Anger Issues (TMNT)
- Raphael Has Anxiety (TMNT)
- Raphael Has Issues (TMNT)
- Raphael Needs a Hug (TMNT)
- Raphael Santiago Being an Asshole
- Raphael-centric
- Raphael-centric (TMNT)
- Rare Pairings
- Rare Relationships
- Reader-Insert
- Reader-Insert Needs a Hug
- Reader-Interactive
- Reconciliation
- Recovery
- Redemption
- References to Canon
- References to Depression
- References to Drugs
- References to the Muppets
- Regret
- Rejection
- Relationship Wingmanning
- Relationship(s)
- Repressed Memories
- Repression
- Request Meme
- Rescue
- Resentment
- Retelling
- Retro-Mutagen (TMNT)
- Revelations
- Revenge
- Rewrite
- Rickrolling
- Rivalry
- Robots
- Romance
- Romantic Comedy
- Romantic Fluff
- Romantic Gestures
- Romantic Tension
- Rope Bondage
- ROTTMNT Week
- Rough Kissing
- Roughness
- Running
- Rutting
- S&M
- Sacrifice
- Sad
- Sad and Sweet
- Sad Donatello (TMNT)
- Sad Ending
- Sad Leonardo (TMNT)
- Sad Michelangelo (TMNT)
- Sad Raphael (TMNT)
- Sad Reader-Insert
- Sad with a Happy Ending
- Safer Sex
- Samurai
- Scared Leonardo (TMNT)
- Scary Movies
- Scent Marking
- Scents & Smells
- School
- Science
- Science Experiments
- Science Fiction
- Science Fiction & Fantasy
- Scientist Donatello (TMNT)
- Seaside
- Season/Series 03
- Secrets
- Seduction to the Dark Side
- Self Confidence
- Self Confidence Issues
- Self Insert Weekend
- Self-Blaming Leonardo (TMNT)
- Self-Discovery
- Self-Doubt
- Self-Esteem
- Self-Esteem Issues
- Self-Harm
- Self-Hatred
- Self-Sacrifice
- Self-Sacrificing Leonardo (TMNT)
- Self-Worth
- Self-Worth Issues
- Semi-Canonical Character
- Senses
- September 11 Attacks
- Serious
- Sex
- Sex Magic
- Sex Toys
- Sex Work
- Sexual Abuse
- Sexual Assault
- Sexual Content
- Sexual Frustration
- Sexual Humor
- Sexual Overstimulation
- Sexual Slavery
- Sexual Tension
- Sexy
- Sexy Leonardo (TMNT)
- Sexy Times
- Sharing
- Sharing Body Heat
- She/Her Pronouns for Leonardo (TMNT)
- Short
- Short & Sweet
- Short One Shot
- Shorts
- Showers
- Shy Raphael
- Sibling April O'Neil (TMNT)
- Sibling Bonding
- Sibling Incest
- Sibling Love
- Sibling Rivalry
- Siblings
- Sick Character
- Sick Leonardo (TMNT)
- Sickfic
- Sign Language
- Single Parents
- Sins
- Sisters
- Size Difference
- Size Kink
- Skateboarding
- Slash
- Slavery
- Sleep
- Sleepiness
- Sleepy Kisses
- Sloppy Makeouts
- Slow Build
- Slow Burn
- Slow Dancing
- Slow Romance
- Slow To Update
- Smut
- Snow
- Snow and Ice
- Snow Day
- So Wrong It's Right
- Soft
- Soft Donatello (TMNT)
- Some Humor
- Song Lyrics
- Song: Daydream Believer (The Monkees)
- Song: Sway (Michael Bublé)
- Song: TV (Billie Eilish)
- Songfic
- Sons
- Sorry Not Sorry
- Soulmates
- South Africa
- Spelling & Grammar
- Spiders
- Spitroasting
- Splinter Tries (TMNT)
- Splinter Tries to Be a Good Parent (TMNT)
- Splinter-centric (TMNT)
- Splintercest (TMNT)
- Spoilers
- Spoilers for Movie: The Avengers (2012)
- Spooky
- Sports
- Step-Brothers
- Step-siblings
- Stockholm Syndrome
- Strangers
- Strangers to Friends to Lovers
- Strangers to Lovers
- Stressed Donatello (TMNT)
- Substance Abuse
- Suicidal Thoughts
- Suicide
- Suicide Attempt
- Summer Vacation
- Superheroes
- Supernatural Bonds
- Supernatural Elements
- Surgery
- Surprise Ending
- Surprise Party
- Surprises
- Survival
- Suspense
- Swearing
- Sweet
- Sweet Michelangelo (TMNT)
- Sweet Miles Morales
- Sweet/Hot
- Swooning
- Swordfighting
- Swords
- TCRI | Techno Cosmic Research Institute (TMNT)
- Team
- Team as Family
- Teasing
- Technodrome (TMNT)
- Teen Angst
- Teen Romance
- Teenage Drama
- Teenage Mutant Ninja Turtles References
- Teenagers
- Teeth
- Tension
- Texting
- Texting Fic
- The Drift (Pacific Rim)
- The Turtles Need a Hug (TMNT)
- Therapist Michelangelo (TMNT)
- Therapy
- There Was Only One Bed
- They/Them Pronouns for Raphael (TMNT)
- They/Them Pronouns for Reader-Insert
- This Is Why We Can't Have Nice Things
- Threats
- Threats of Rape/Non-Con
- Threats of Violence
- Threesome
- Threesome - F/M/M
- Thriller
- TikTok
- Time Skips
- Time Travel
- Tooth-Rotting Fluff
- Top Michelangelo (TMNT)
- Top Mike
- Top Mike (Magic Mike)
- Topping
- Torture
- Tragedy
- Tragic Romance
- Trans
- Trans Character
- Trans Donatello (TMNT)
- Trans Female Character
- Trans Female Leonardo (TMNT)
- Trans Leonardo (TMNT)
- Trans Male Character
- Trans Male Leonardo (TMNT)
- Trans Male Raphael (TMNT)
- Trans Raphael (TMNT)
- Trauma
- Traumatized Leonardo (TMNT)
- Traumatized Michelangelo (TMNT)
- Triggers
- Tropes
- Trust
- Truth or Dare
- Tumblr
- Turtle Anatomy (TMNT)
- Turtle Biology (TMNT)
- Turtle Instincts (TMNT)
- Turtle Noises (TMNT)
- Turtle Pile (TMNT)
- Turtle Sex (TMNT)
- Turtle Tots (TMNT)
- Turtlecest (TMNT)
- Turtles
- Twins
- Twisted
- Twisted and Fluffy Feelings
- Uke Raphael (TMNT)
- Undeath
- Underage
- Underage Prostitution
- Underage Rape/Non-con
- Underage Sex - Freeform
- Undercover
- Undercover Missions
- Unethical Experimentation
- Unhealthy Coping Mechanisms
- Unrequited
- Unrequited Love
- Unresolved Romantic Tension
- Unresolved Sexual Tension
- Unresolved Tension
- Valentine's Day
- Valentine's Day Fluff
- Villain Turtles (TMNT)
- Villains
- Violence
- Vivisection
- Voice Kink
- Vomiting
- Voyeurism
- Wall Sex
- War
- Weapons
- Weather
- Weddings
- Weirdness
- What Have I Done
- What Was I Thinking?
- Wholesome
- Whump
- Why Did I Write This?
- Wilderness
- Wingman April O'Neil (TMNT)
- Wings
- Wisdom Teeth
- Withdrawal
- Worried April O'Neil (TMNT)
- Worried Donatello (TMNT)
- Worried Raphael (TMNT)
- Worry
- Worth It
- Worth Re-Reading
- Written Before WandaVision (TV)
- Wrong
- Y/N Used for Reader-Insert
- Yaoi
- Youkai
- Young
- Young Love
- Younger Sibling Leonardo (TMNT)
- Younger Sibling Michelangelo (TMNT)