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   Sharpest Tool by stilllmonster

   Fandoms: ENHYPEN (Band)  

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

   01 Feb 2026

   Tags

   • No Archive Warnings Apply
   • Kim Sunoo/Lee Heeseung
   • Lee Heeseung
   • Kim Sunoo (ENHYPEN)
   • Yang Jungwon (ENHYPEN)
   • Park Jongseong | Jay
   • Sim Jaeyun | Jake
   • Park Sunghoon (ENHYPEN)
   • Nishimura Riki | Ni-ki
   • Alpha/Beta/Omega Dynamics
   • Alpha Lee Heeseung
   • Omega Kim Sunoo (ENHYPEN)
   • Top Lee Heeseung
   • Bottom Kim Sunoo (ENHYPEN)
   • Fluff and Angst
   • Angst
   • Alternate Universe - College/University
   • Minor Park Jongseong | Jay/Yang Jungwon
   • Minor Park Sunghoon/Sim Jaeyun | Jake
   • Kim Sunoo Is Bad At Feelings (ENHYPEN)
   • Lee Heeseung is Bad at Feelings
   • Lee Heeseung Has A Big Dick
   • Smut
   • Anal Sex
   • Oral Sex
   • Scenting
   • Making Out
   • they kiss a lot
   • Miscommunication
   • Misunderstandings
   • I'm Bad at Tagging
   • Not Actually Unrequited Love
   • Tired Kim Sunoo (ENHYPEN)
   • To Be Edited
   • Mpreg mentioned

   Summary

   It starts with one heat and the promise that it doesn’t have to mean anything.

   Sunoo and Heeseung keep it simple; friends, sometimes more, nothing complicated… until it is.

   or, heesun fwb.

   Language:

   English

   Words:

   41,372

   Chapters:

   11/11

   Comments:

   122

   Kudos:

   562

   Bookmarks:

   111

   Hits:

   12,660

   Bookmarked by moongrows

   26 Jun 2026