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1. Forbidden Sustenance by HamHamNeedsToChill

   Fandoms: Project Hail Mary - Andy Weir, Project Hail Mary (2026)  

   • Explicit
   • No Archive Warnings Apply
   • Multi
   • Work in Progress

   13 Aug 2026

   Tags

   • No Archive Warnings Apply
   • Ryland Grace/Rocky
   • Adrian/Ryland Grace/Rocky
   • Ryland Grace
   • Adrian (Project Hail Mary)
   • Rocky (Project Hail Mary)
   • Original Eridian Characters (Project Hail Mary)
   • Alien Biology
   • Alien Sex
   • Alien/Human Relationships
   • Eventual Smut
   • Internal Metamorphosis
   • Egg Laying
   • Eridians Have Ovipositors (Project Hail Mary)
   • They/Them Pronouns for Eridians (Project Hail Mary)
   • He/Him Pronouns for Rocky (Project Hail Mary)
   • Oviposition
   • Breeding Kink
   • Teasing
   • Mutual Masturbation
   • Praise Kink
   • Degradation Kink
   • Science Experiments
   • Ryland Grace is a Leaky Space Blob
   • Other Additional Tags to Be Added
   • Ass Play
   • Rapid Evolution
   • mild body horror
   • Wank and Tell | Creator is Open to Comments about Masturbating to This Work
   • Fanart Welcome
   • Fuck AI
   • This fic was written by a person
   • Egg Preg
   • Belly Bulge
   • Aphrodisiacs
   • no actual pregnancy
   • Porn with Plot
   • Shameless Smut
   • Aftercare
   • Double Penetration

   Summary

   Grace is sick and tired of the food he has to eat on Erid, so he decides to risk a taste of Eridian food. There will be consequences, but they're nothing like what he thought would happen. Suddenly, he can see Rocky with his eyes closed.
   As a man of science, he wants to see how far the rabbit hole goes- even if that goes past what his human body is usually capable of.

   Language:

   English

   Words:

   21,523

   Chapters:

   6/?

   Comments:

   81

   Kudos:

   542

   Bookmarks:

   116

   Hits:

   6,243