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1. Public Bookmark 53

   A Margin of Error by Eirast0tle

   Fandoms: Haikyuu!!  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • F/M
   • Complete Work

   08 Apr 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Kuroo Tetsurou/Original Female Character(s)
   • Kuroo Tetsurou/Reader
   • Kuroo Tetsurou
   • Kuroo Tetsurou's Family
   • Kozume Kenma
   • Nekoma Volleyball Club Members
   • Haiba Lev
   • Kai Nobuyuki
   • Yaku Morisuke
   • Enemies to Lovers
   • Rivals to Lovers
   • Academics
   • Academic Rivals to Lovers
   • Haikyuu!! Manga Spoilers
   • Kozume Kenma & Kuroo Tetsurou Friendship
   • Nekoma
   • Fluff and Angst
   • Forced Proximity
   • Chemistry
   • Competition
   • Yearning
   • male yearning
   • Inferiority Complex
   • MC complex
   • Slow Burn
   • High School
   • Reader-Insert
   • Female Reader-Insert
   • Y/N Used for Reader-Insert
   • Y/n has Good Parents
   • Unresolved Romantic Tension
   • Unresolved Emotional Tension
   • Romantic Tension
   • Romantic Angst
   • Jealous Kuroo Tetsurou
   • Flirting
   • Mutual Pining
   • Angst with a Bittersweet Ending
   • Cruise Ships
   • Clubbing
   • Men Crying
   • Laboratories

   Summary

   I never expected my final year of school to be defined by late-night lab reports, volatile hypotheses... and Tetsurō Kuroo.
   Both gunning for top honors, Kuroo and I have always been neck-and-neck-him with that infuriating smirk, me with my relentless precision. So when I'm assigned to co-lead a high-stakes science project, it's a disaster waiting to happen. Heated arguments. Teasing glances. Lab explosions-some chemical, some emotional.
   Something fragile. Something real.

   Language:

   English

   Words:

   83,134

   Chapters:

   29/29

   Comments:

   191

   Kudos:

   225

   Bookmarks:

   53

   Hits:

   4,977

   Bookmarked by Ladyquill

   23 Dec 2025