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1. Mary on a Cross by sebbyseb

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

   • Explicit
   • Graphic Depictions Of Violence
   • M/M
   • Work in Progress

   02 Aug 2026

   Tags

   • Graphic Depictions Of Violence
   • The Convict | Simon (Iron Lung)/Ryland Grace
   • The Convict | Simon (Iron Lung) & Ryland Grace
   • Carl (Project Hail Mary 2026)
   • Ryland Grace
   • The Convict | Simon (Iron Lung)
   • Eva Stratt
   • Ava (Iron Lung)
   • Yáo Li-Jie (Project Hail Mary)
   • Olesya Ilyukhina
   • Martin DuBois (Project Hail Mary)
   • Annie Shapiro (Project Hail Mary)
   • Original Characters
   • Mutated The Convict | Simon (Iron Lung)
   • The Convict | Simon Lives (Iron Lung)
   • The Convict | Simon Needs a Hug (Iron Lung)
   • Body Horror
   • Angst
   • but super fluffy
   • POV Ryland Grace
   • Fuck AI
   • These are my emotional support em-dashes
   • The Convict | Simon Has PTSD (Iron Lung)
   • Ryland Grace Has a Bad Time
   • Simon is a mutant with reptile characteristics
   • just the left eye
   • The Convict | Simon is a Leaky Space Blob (Iron Lung)
   • Slow Burn
   • Betrayal
   • because Ryland was betrayed by Stratt thats it
   • happened before Hail Mary set off
   • Simon can finally see stars
   • no AI
   • big words are from me
   • inspired by the concept of Sweet Home
   • we're gonna go scientific here
   • i love science so bare with me
   • lots of blood and mutation
   • Blood and Violence
   • Simon-Eel
   • Mentioned Blood Eel (Iron Lung)
   • Ellie controlling Simon
   • Eventual Sex
   • Eventual Smut
   • Smut
   • Top The Convict | Simon (Iron Lung)
   • Bottom Ryland Grace
   • just because Simon is a virgin
   • sex for people in eden is for survival so they're rough
   • Detailed Body Horror

   Summary

   What if after the explosion that cost lives of the astronauts and half of astrophage fuel lost, humans discovered that Simon's mutated blood can produce a much powerful astrophage in a short period of time?

   Or

   Just Grace taking care of Simon who happened to land on the pacific ocean the same time Grace started to breed astrophage and he hid Simon inside the lab's basement and prayed to all the gods Stratt wouldn't find out.

   Language:

   English

   Words:

   39,103

   Chapters:

   6/16

   Comments:

   40

   Kudos:

   75

   Bookmarks:

   27

   Hits:

   1,487