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. Eldian Physiology and Socio-Biology Handbook: Secondary Gender Dynamics by What_The_Hell_Is_That

   Fandoms: Shingeki no Kyojin | Attack on Titan  

   • Not Rated
   • No Archive Warnings Apply
   • Multi
   • Work in Progress

   01 Aug 2026

   Tags

   • No Archive Warnings Apply
   • Eren Yeager
   • Mikasa Ackerman
   • Armin Arlert
   • Levi Ackerman
   • Reiner Braun
   • Bertolt Hoover
   • Hange Zoë
   • Alpha/Beta/Omega Dynamics
   • Pack Dynamics
   • If the ABO dynamics were applied in the Attack on Titan universe
   • It was great to write
   • ABO (Omegaverse) Guide
   • Alternate Universe - Canon Divergence
   • Worldbuilding
   • Eldian Biology / Eldian Physiology
   • Eldians (Shingeki no Kyojin)
   • Discrimination Against Eldians (Shingeki no Kyojin)
   • The Founding Titan | Coordinate (Shingeki no Kyojin)
   • Mating Cycles/In Heat
   • Mating Cycles/In Rut
   • Mating Bites
   • Mating Bond
   • Mating
   • Scent Marking
   • Scenting
   • Bonding
   • Non-Traditional Alpha/Beta/Omega Dynamics
   • Medicalized Alpha/Beta/Omega Dynamics
   • Science-Based ABO
   • ABO Ethics
   • Mpreg | Male Pregnancy
   • Male Lactation
   • Biology
   • Marley (Shingeki no Kyojin)

   Summary

   What if ABO dynamics were deeply rooted in the biology and history of Attack on Titan ?

   Moving away from traditional tropes, this work offers a grounded, realistic encyclopedia of the Alpha/Omega system among the Subjects of Ymir. Born from the Founding Titan’s genetic alterations, this expanded lore explores Eldian physiology, pheromonal mechanics, and the stark contrast between Paradis society and Marleyan suppression.

   A comprehensive guide to a medically and politically detailed AU.

   Feel free to use this as a base for your own Attack on Titan ABO stories ! A quick credit or mention is always appreciated so readers can find the original source ;)

   Series

   • Part 1 of Attack on Titan ABO alternate universe

   Language:

   English

   Words:

   9,579

   Chapters:

   9/10

   Kudos:

   9

   Bookmarks:

   1

   Hits:

   92