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1. Union Princess by omegasieun

   Fandoms: 약한영웅 | Weak Hero (TV)  

   • Explicit
   • No Archive Warnings Apply
   • M/M
   • Complete Work

   09 May 2026

   Tags

   • No Archive Warnings Apply
   • Ahn Suho | Stephen/Yeon Sieun | Gray
   • Keum Seongje | Wolf/Yeon Sieun | Gray
   • Park Humin | Ben/Yeon Sieun | Gray
   • Na Baekjin | Donald/Yeon Sieun | Gray
   • Yeon Sieun | Gray
   • Keum Seongje | Wolf
   • Ahn Suho | Stephen
   • Na Baekjin | Donald
   • Park Humin | Ben
   • Alternate Universe - Canon Divergence
   • Yeongdeungpo Union Member Yeon Sieun | Gray
   • Omega Verse
   • Omega Yeon Sieun | Gray
   • Alpha Ahn Suho | Stephen
   • Alpha Keum Seongje | Wolf
   • Alpha Park Humin | Ben
   • Alpha Na Baekjin | Donald
   • Explicit Sexual Content
   • Mating Cycles/In Heat
   • Bottom Yeon Sieun | Gray
   • Rough Sex
   • Spitroasting
   • Oral Knotting
   • Double Penetration
   • Knotting
   • Belly Bulge
   • Size Difference
   • Horny Yeon Sieun | Gray
   • he enjoys being knotted by his 4 alphas sorry he's a freak here
   • Aftercare
   • this is mostly porn but there is some background plot of sieun being the union princess
   • seongje and suho fight over sieun all the time they're annoying as hell lmao
   • baekjin also has a soft spot for sieun

   Summary

   Sieun is the only Omega Union member. Surrounded by many Alpha thugs, he feels safe around 4 Alphas the most. They fight over him 24/7 and also help him with his rough heat cycles every month.

   Language:

   English

   Words:

   11,908

   Chapters:

   1/1

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