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1. Public Bookmark 19

   Umamusume Chubby Derby by FlowerNeri

   Fandoms: ウマ娘 プリティーダービー | Uma Musume: Pretty Derby (Anime), ウマ娘 プリティーダービー | Uma Musume: Pretty Derby (Video Game)  

   • Explicit
   • Creator Chose Not To Use Archive Warnings
   • F/F
   • Work in Progress

   04 Jul 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Daiichi Ruby/Daitaku Helios (Uma Musume)
   • Agnes Tachyon/Jungle Pocket (Uma Musume)
   • Durandal/Fine Motion (Uma Musume)
   • Loves Only You/Marche Lorraine (Uma Musume)
   • Jungle Pocket (Uma Musume)
   • Agnes Tachyon (Uma Musume)
   • Manhattan Cafe (Uma Musume)
   • Maruzensky (Uma Musume)
   • Daitaku Helios (Uma Musume)
   • Kitasan Black (Uma Musume)
   • Duramente (Uma Musume)
   • Satono Diamond (Uma Musume)
   • Cheval Grand (Uma Musume)
   • Sakura Bakushin O (Uma Musume)
   • various cameos
   • Loves Only You (Uma Musume)
   • Curren Chan (Uma Musume)
   • Marche Lorraine (Uma Musume)
   • Calstone Light O (Uma Musume)
   • Durandal (Uma Musume)
   • Fine Motion (Uma Musume)
   • Believe (Uma Musume)
   • Symboli Rudolf (Uma Musume)
   • Agnes Digital (Uma Musume)
   • Kiseki (Uma Musume)
   • Mejiro Dober (Uma Musume)
   • Mejiro Ryan (Uma Musume)
   • Mejiro Bright (Uma Musume)
   • Special Week (Uma Musume)
   • Silence Suzuka (Uma Musume)
   • Grass Wonder (Uma Musume)
   • Almond Eye (Uma Musume)
   • Lucky Lilac (Uma Musume)
   • Weight Gain
   • BBW
   • ssbbw
   • wg
   • Fat - Freeform
   • wardrobe malfunction
   • stuckage
   • Yuri
   • Size Difference
   • Out of Character

   Summary

   Tachyon latest experiment is meant to challenge the Umamusume body, making them carry much weight that they usually did. And while she originally intended for this to only be tested on one person, is not long before Tracen finds itself with a lot of chunkier students.

   Language:

   English

   Words:

   16,310

   Chapters:

   7/13

   Comments:

   19

   Kudos:

   81

   Bookmarks:

   19

   Hits:

   5,370

   Bookmarked by GaminGecko

   03 Sep 2026