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1. Marked by vyn_studio

   Fandoms: Teenage Mutant Ninja Turtles: Mutant Mayhem (Movie 2023), Teenage Mutant Ninja Turtles - All Media Types  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • Gen
   • Complete Work

   08 Jun 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Donatello & Leonardo & Michelangelo & Raphael (TMNT)
   • Leonardo & April O'Neil (TMNT)
   • Donatello & Leonardo & Michelangelo & Raphael & Splinter (TMNT)
   • Leonardo (TMNT)
   • Michelangelo (TMNT)
   • Raphael (TMNT)
   • Donatello (TMNT)
   • April O'Neil (TMNT)
   • Splinter (TMNT)
   • Oroku Saki | Shredder
   • Hamato Yoshi
   • Casey Jones (TMNT)
   • Leonardo-centric (TMNT)
   • Leonardo Has Anxiety (TMNT)
   • Hurt Leonardo (TMNT)
   • Leonardo Needs a Hug (TMNT)
   • Protective Siblings
   • Protective Raphael (TMNT)
   • Protective Donatello (TMNT)
   • Protective Michelangelo (TMNT)
   • Protective Splinter (TMNT)
   • Good Sibling Raphael (TMNT)
   • Good Sibling Donatello (TMNT)
   • Good Sibling Michelangelo (TMNT)
   • Protective April O'Neil (TMNT)
   • Good Friend April O'Neil (TMNT)
   • Demon Shredder AU
   • Demonic Possession
   • Paranormal
   • Paranoia
   • Hallucinations
   • shadow entity - Freeform
   • Alternate Reality
   • Alternate Universe - Canon Divergence
   • Worried Raphael (TMNT)
   • Worried Donatello (TMNT)
   • Worried Michelangelo (TMNT)
   • Worried Splinter (TMNT)
   • Worried April O'Neil (TMNT)
   • Leonardo Angst (TMNT)
   • Insomniac Leonardo (TMNT)
   • Implied/Referenced Self-Harm
   • self harm misunderstanding
   • Good Friend Casey Jones (TMNT)

   Summary

   New York finally feels normal again after the Superfly incident.
   The turtles are going to school. Making friends. Living like regular teenagers.

   So of course, they decide to explore an abandoned building after class.

   Leo thinks it’s just another dumb adventure.

   Until he touches something that should not exist.

   And something else notices him back.

    

   Or

    

   Leo gets attached by a demon shredder and tried to hide it from his family. But I bet we all know how it’ll end eventually. Lol

   Language:

   English

   Words:

   48,824

   Chapters:

   15/15

   Comments:

   87

   Kudos:

   94

   Bookmarks:

   13

   Hits:

   1,631