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1. I’ll Believe in Anything by smellydotcom

   Fandoms: Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles - All Media Types  

   • Mature
   • No Archive Warnings Apply
   • M/M
   • Work in Progress

   20 May 2026

   Tags

   • No Archive Warnings Apply
   • Donatello/Casey Jones (TMNT)
   • Donatello (TMNT)
   • Casey Jones (TMNT)
   • Raphael (TMNT)
   • Leonardo (TMNT)
   • Michelangelo (TMNT)
   • Leatherhead (TMNT)
   • The Kraang (TMNT)
   • April O'Neil (TMNT)
   • Alternate Universe - High School
   • Alternate Universe - Human
   • Vigilantism
   • vigilante turtles
   • Vigilante Casey Jones (TMNT)
   • Mutagen (TMNT)
   • Alternate Universe - Canon Divergence
   • Queer Themes
   • we’ll get there eventually i pinky promise
   • Gay Casey Jones (TMNT)
   • arospec donatello
   • pov changes from chapter to chapter
   • Other Additional Tags to Be Added

   Summary

   Hamato Donatello stares at the packet clenched between his fingers. A math test, trigonometry to be specific. He thought he’d had it in the bag, an easy 100%, but his hands tremble as he looks at the number within the bright red circle at the top of his paper.

   99%. Circled in red, with a smiley-face and a “great job!” from his teacher scrawled next to it.

   AKA

   Human, high school AU because I’m brainrotted. Mostly follows the plot of seasons one through three, with my own twists. (there is a lore reason for why they’re human!!!! not explained yet, but definitely a lore reason)

   Language:

   English

   Words:

   2,370

   Chapters:

   1/?

   Comments:

   6

   Kudos:

   9

   Bookmarks:

   3

   Hits:

   113