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1. The One Good Thing You've Ever Done by celeste_02

   Fandoms: Haikyuu!!  

   • Mature
   • No Archive Warnings Apply
   • M/M
   • Work in Progress

   30 Sep 2026

   Tags

   • No Archive Warnings Apply
   • Miya Atsumu/Sakusa Kiyoomi
   • Miya Atsumu & Miya Osamu
   • Bokuto Koutarou & Miya Atsumu
   • Hinata Shouyou & Miya Atsumu
   • Miya Atsumu
   • Sakusa Kiyoomi
   • Hinata Shouyou
   • Bokuto Koutarou
   • Miya Osamu
   • Alternate Universe
   • Alpha/Beta/Omega Dynamics
   • Fluff
   • Hurt/Comfort
   • Single Parent Miya Atsumu
   • One Night Stands
   • Omega Miya Atsumu
   • Alpha Sakusa Kiyoomi
   • Alpha Miya Osamu
   • Alpha Bokuto Koutarou
   • Omega Hinata Shouyou
   • Mpreg | Male Pregnancy
   • Pregnant Miya Atsumu
   • Morning Sickness
   • Pro Volleyball Player Miya Atsumu
   • Pro Volleyball Player Sakusa Kiyoomi
   • Miya Atsumu Needs a Hug
   • no beta we die like daichi
   • Other Additional Tags to Be Added
   • Sakusa's not the step dad
   • He's the dad who stepped up

   Summary

   Atsumu knew he was a horrible person.

   Atsumu knows he’s horrible, that everything he touches withers and perishes.

   But, looking down at the two pink lines on the stick in his hand, he can’t help but wonder if this could be the first good thing he’s done.

   --

   Or a one night stand leads Atsumu to enter a new chapter in his life he never expected.

   Language:

   English

   Words:

   5,639

   Chapters:

   2/?

   Comments:

   4

   Kudos:

   73

   Bookmarks:

   16

   Hits:

   936