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1. like thunder in summer (without warning, you were there) by shrimpheaven

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

   • Explicit
   • No Archive Warnings Apply
   • Other
   • Complete Work

   15 May 2026

   Tags

   • No Archive Warnings Apply
   • Ryland Grace/Rocky
   • Ryland Grace
   • Rocky (Project Hail Mary)
   • Adrian (Project Hail Mary)
   • Trans Character
   • Trans Ryland Grace
   • Friends to Lovers
   • Pining
   • Mutual Pining
   • Angst
   • Friends With Benefits to Lovers
   • Sex Education
   • Getting Together
   • Epiphanies
   • Assimilation into Alien Culture
   • Hand Jobs
   • Egg Laying
   • Alien Biology
   • Alien/Human Relationships
   • Liberties Taken with Eridian Anatomy
   • ovipositors
   • Mentions of Oviposition
   • Oral Sex
   • Intercrural Sex
   • t dick
   • Frottage
   • Dirty Talk
   • Penetrative Sex
   • Ryland Grace does his best not to cry in the sack
   • compatible atmospheres
   • multiple dicks and multiple vaginas across only two characters
   • Eridian courtship rituals
   • POV Alternating
   • In which we pretend that mercury is harmless and we do it for the vine
   • partially inspired by the novel Split or Swallow
   • partially inspired by the classic ‘doggy so we can both watch lord of the rings’ tweet
   • what did Rocky really think was going to happen when he suggested this i mean
   • Kissing Lessons
   • Scissoring
   • Sort Of
   • Sexual Use of the Eridian Abdominal Hole (Project Hail Mary)

   Summary

   In a misguided attempt to quell Ryland Grace’s loneliness by wingmanning him across the galaxy and into the five arms of some theoretical Eridian babe, Rocky might accidentally kind of realize that he really doesn’t want that to happen at all. At least, not with just any nonspecific theoretical Eridian babe. More like one very specific extant Eridian babe.

   aka: the “split or swallow” AU that no one asked for, ft. Eridian Sex Ed 301, 303, and 305H, taught by one Rocky to a single, starry-eyed human student.

   Language:

   English

   Words:

   30,772

   Chapters:

   9/9

   Comments:

   194

   Kudos:

   722

   Bookmarks:

   146

   Hits:

   6,730