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1. seven days in heaven by kacttt

   Fandoms: Project Hail Mary (2026), Project Hail Mary - Andy Weir, Iron Lung (2026), David Szymanski's Iron Lung - All Media Types  

   • Explicit
   • No Archive Warnings Apply
   • M/M
   • Work in Progress

   04 Oct 2026

   Tags

   • No Archive Warnings Apply
   • The Convict | Simon (Iron Lung)/Ryland Grace
   • Ryland Grace & Rocky
   • The Convict | Simon (Iron Lung) & Ryland Grace
   • Ryland Grace
   • The Convict | Simon (Iron Lung)
   • Rocky (Project Hail Mary)
   • Alpha/Beta/Omega Dynamics
   • Non-Traditional Alpha/Beta/Omega Dynamics
   • Omega/Omega
   • Omega Ryland Grace
   • Omega The Convict | Simon (Iron Lung)
   • Switch Ryland Grace
   • Switch The Convict | Simon (Iron Lung)
   • Amputee The Convict | Simon (Iron Lung)
   • Explicit Sexual Content
   • Mentioned Attempted Sexual Assault
   • Breeding
   • Breeding Kink
   • Love Confessions
   • Hand Jobs
   • Blow Jobs
   • Riding
   • Topping from the Bottom
   • Aggressively Horny Omegas
   • Vaginal Fingering
   • Vaginal Sex
   • Intersex Omega Anatomy
   • male omegas and female alphas have a penis and a vagina
   • Top The Convict | Simon (Iron Lung)
   • Bottom The Convict | Simon (Iron Lung)
   • Top Ryland Grace
   • Bottom Ryland Grace
   • Penis in Vagina Sex
   • Marathon Sex
   • Sexual Overstimulation
   • Mating Cycles/In Heat
   • Dirty Talk
   • Praise Kink
   • Soft Dom The Convict | Simon (Iron Lung)
   • Unplanned Pregnancy
   • Pregnancy
   • Pregnancy Kink
   • Fisting
   • Ryland Grace Being a Brat
   • The Convict | Simon Lives (Iron Lung)
   • Alternate Universe - Post-Canon
   • The Convict | Simon (Iron Lung) on Planet Erid (Project Hail Mary)
   • Other Additional Tags to Be Added
   • beta read but we're still dying
   • scruffing
   • Panic Attacks
   • Porn with Plot
   • Porn with Feelings
   • Service Top The Convict | Simon (Iron Lung)
   • Rough Sex
   • Creampie
   • Cunnilingus
   • Eden is a Cult (Iron Lung)
   • Mommy Kink
   • Sex Toys
   • POV Ryland Grace
   • Somnophilia
   • Consensual Somnophilia

   Summary

   Ryland Grace hasn't had a heat since well before the Project Hail Mary mission. He didn't think he needed to worry about having heats on Erid until he realized he was in preheat. While gathering supplies, his fellow biodome occupant, a skittish man named Simon that he and Rocky rescued on the way to Erid, offers to help him out. Grace is opposed to the idea until he realizes that Simon is also an omega. With the threat of spending his first heat in years alone, he agrees. Things only escalate from there.

   OR

   Grace accidentally triggers Simon's heat halfway through his own. They both end up pregnant.

   Language:

   English

   Words:

   60,358

   Chapters:

   6/?

   Collections:

   1

   Comments:

   139

   Kudos:

   526

   Bookmarks:

   80

   Hits:

   9,458