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1. Mutation by UnderGraySkies

   Fandoms: Spider-Man: Brand New Day (Movie 2026)  

   • Explicit
   • No Archive Warnings Apply
   • M/M
   • Complete Work

   29 Jul 2026

   Tags

   • No Archive Warnings Apply
   • Frank Castle/Peter Parker
   • Frank Castle
   • Peter Parker
   • PWP
   • Alternate Universe - Canon Divergence
   • Boypussy
   • First Time Bottoming
   • Gentle Sex
   • Squirting and Vaginal Ejaculation
   • Cunnilingus
   • Multiple Orgasms
   • Breeding Kink
   • Top Frank Castle
   • Bottom Peter Parker
   • Loss of Virginity
   • Praise Kink
   • No Spoilers

   Summary

   Peter's DNA is changing.

   Every piece of his DNA.

    

   Or, Peter gets a cunt and Frank is super into it.

   Series

   • Part 1 of Staten Island (Stand-Alone Spidisher Fics)

   Language:

   English

   Words:

   4,832

   Chapters:

   1/1

   Comments:

   64

   Kudos:

   893

   Bookmarks:

   124

   Hits:

   8,214