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1. Marco and The Butterfly Effect by YahooSounding

   Fandoms: Star vs. the Forces of Evil  

   • Mature
   • Major Character Death, Underage Sex
   • F/M, Multi
   • Work in Progress

   17 Mar 2026

   Tags

   • Major Character Death
   • Underage Sex
   • Marco Diaz/Harem
   • Marco Diaz/Hekapoo (Star vs. the Forces of Evil)
   • Moon Butterfly/Marco Diaz
   • Marco Diaz (Star vs. the Forces of Evil)
   • Moon Butterfly
   • River Butterfly
   • Hekapoo (Star vs. the Forces of Evil)
   • Star Butterfly
   • Time Travel
   • Alternate Universe - Canon Divergence
   • Based off Vercomicsporno Comic
   • Back To The Future Parody
   • What if Marco Diaz Changed The Future?
   • Oral Sex
   • Vaginal Sex
   • Deep kissing
   • Impregnation

   Summary

   Based off of "Back to the Future" and a Vercomicsporno story called "Marco vs The Forces of Time". Marco, in an adventure with Hekapoo, notices that the dimensions are collapsing, and the only way to fix it is for Marco to go to the past and find the anomaly. However, in the process, he accidentally changes the past, as a young Moon Butterfly falls in love with Marco and takes him in. Will Marco try to change the past... or will he listen to his temptations and mess with the past?

   Language:

   English

   Words:

   11,209

   Chapters:

   4/?

   Comments:

   39

   Kudos:

   37

   Bookmarks:

   12

   Hits:

   1,718