Adult Content Warning

This work could have adult content. If you continue, you have agreed that you are willing to see such content.

• Yes, Continue
• No, Go Back

If you accept cookies from our site and you choose "Yes, Continue", you will not be asked again during this session (that is, until you close your browser). If you log in you can store your preference and never be asked again.

1. The Study of Cross-Species Astro Neurobiology (The Official Ryland Grace Guide to Alien Flirting) by powerxtrip

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

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

   09 May 2026

   Tags

   • No Archive Warnings Apply
   • Ryland Grace/Rocky
   • Adrian/Rocky (Project Hail Mary)
   • Adrian/Ryland Grace/Rocky
   • Ryland Grace
   • Rocky (Project Hail Mary)
   • Adrian (Project Hail Mary)
   • Original Eridian Characters (Project Hail Mary)
   • Alien Cultural Differences
   • Flirting
   • Polyamory Negotiations
   • Alien Biology
   • Alien Sex
   • Eridian Culture & Customs (Project Hail Mary)
   • Eridian Biology (Project Hail Mary)

   Summary

   Grace and Rocky survived the trip to Erid. Now, all Grace has to do is live on a planet meant to kill him, charm his best friend's mate, and figure out why all these Eridians keep giving him rocks. Easy right? As long as he doesn't die of scurvy, first.

   Language:

   English

   Words:

   9,944

   Chapters:

   1/2

   Comments:

   25

   Kudos:

   412

   Bookmarks:

   104

   Hits:

   2,251