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1. Stimulus and Response by R0llinGirl

   Fandoms: 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

   28 Aug 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Agnes Tachyon/Air Shakur (Uma Musume)
   • Air Shakur (Uma Musume)
   • Agnes Tachyon (Uma Musume)
   • Jungle Pocket (Uma Musume)
   • Fine Motion (Uma Musume)
   • Manhattan Cafe (Uma Musume)
   • Lesbian Sex
   • Oral Sex
   • Vaginal Sex
   • Grinding
   • Vaginal Fingering
   • Degradation
   • Sexual Experimentation
   • Air Shakur does not have a fucking dick
   • Tachyon is an asshole
   • Squirting
   • Scissoring
   • Phone Sex
   • Bottom Air Shakur
   • Sexting
   • Implied/Referenced Drug Use
   • No girl penis
   • Sexual exploration
   • Bottom Agnes Tachyon (Uma Musume)
   • versatile
   • Switching

   Summary

   How much can emotions truly affect an umamusume’s performance on the track?

   Agnes Tachyon has been searching for the answer, and she’s found the perfect guinea pig to put her theory to the test.

   Air Shakur just wanted to collect some data on the same subject, but she has no idea what she’s about to get herself into.

   Language:

   English

   Words:

   19,626

   Chapters:

   5/?

   Comments:

   22

   Kudos:

   57

   Bookmarks:

   7

   Hits:

   976