Attack on Titan ABO alternate universe
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Listing Series
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Eldian Physiology and Socio-Biology Handbook: Secondary Gender Dynamics by What_The_Hell_Is_That
Fandoms: Shingeki no Kyojin | Attack on Titan
01 Aug 2026
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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
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Summary
Eren desperately wants to save everyone he loves.
But in every possible future, Reiner dies by his own hand, and Eren refuses to accept that fate.
There is only one path where Reiner survives.
He has to have a baby.
His baby.
Series
- Part 2 of Attack on Titan ABO alternate universe