Casey Jones/April O'Neil (TMNT) FanFiction

The Winner Takes It All (The Loser Has To Fall)

The Winner Takes It All (The Loser Has To Fall)

F/F
F/M
Gen
M/M
G
Updated
11.04.2025
Fandom
Teenage Mutant Ninja Turtles (TV 2012) Teenage Mutant Ninja Turtles - All Media Types Teenage Mutant Ninja Turtles (Bay Movies)
Characters
Leonardo (TMNT), Karai (TMNT), Donatello (TMNT), Michelangelo (TMNT), Raphael (TMNT), April O'Neil (TMNT), Leonardo (TMNT)/Yuichi Usagi, Donatello & Leonardo & Michelangelo & Raphael (TMNT), Donatello & Leonardo & Michelangelo & April O'Neil & Raphael (TMNT), Casey Jones/April O'Neil (TMNT), Casey Jones (TMNT), The Foot Clan (TMNT),
Tags
Medical Trauma Protective Siblings Brotherly Love Blood and Injury Blood and Gore Torture Post-Traumatic Stress Disorder - PTSD Implied/Referenced Suicide Implied/Referenced Child Abuse Emotional/Psychological Abuse Psychological Trauma Implied/Referenced Character Death
Leonardo gets sent to South America for leadership training and is expected to come back after a year.------------------------------------------------------------------------------------------------------------Or Leo can't remember the last time her...
My Girlfriend’s Bestfriend

My Girlfriend’s Bestfriend

F/F
M/M
Multi
G
Updated
12.04.2025
Fandom
Teenage Mutant Ninja Turtles (TV 2012)
Characters
Original Characters, Leonardo (TMNT), Karai (TMNT), Donatello (TMNT), Michelangelo (TMNT), Raphael (TMNT), April O'Neil (TMNT), Leonardo/April O'Neil (TMNT), Casey Jones/April O'Neil (TMNT), Casey Jones (TMNT), Casey Jones/Raphael (TMNT), Raphael & April O’Neil (TMNT),
Tags
Alternate Universe Alternate Universe - Human Canon Autistic Character Human AU TCEST DNI Autistic Donatello (TMNT) She/Her Pronouns for Leonardo (TMNT) They/Them Pronouns for Donatello (TMNT) Autistic Raphael (TMNT) karai and Lea are tech crew kids Leonardo is called Lea or Leona btw Splinter adopted the turtles
Casey Jones and April O’Neil have recently started dating. But, the redheads’ best friend is making Casey second-guess his relationship with April and his identity as a whole.( on hold until I get more motivation to continue this, might rewrite the w...