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1. Symbiosis by n0tmyoui

   Fandoms: Harry Potter - J. K. Rowling  

   • Mature
   • Graphic Depictions Of Violence
   • F/F
   • Complete Work

   24 Jul 2026

   Tags

   • Graphic Depictions Of Violence
   • Hermione Granger/Bellatrix Black Lestrange
   • Hermione Granger
   • Bellatrix Black Lestrange
   • Severus Snape
   • Harry Potter
   • Ron Weasley
   • Voldemort (Harry Potter)
   • Lucius Malfoy
   • Nymphadora Tonks
   • Kingsley Shacklebolt
   • Alastor "Mad-Eye" Moody
   • Morally Grey Hermione Granger
   • Possessive Bellatrix Black Lestrange
   • Protective Hermione Granger
   • Enemies to Lovers
   • Dark Magic Rituals (Harry Potter)
   • Slow Burn
   • Unhealthy Coping Mechanisms
   • Obsession
   • Hate Sex
   • Devotion
   • Dark Hermione Granger
   • Insane Bellatrix Black Lestrange
   • Sub Bellatrix Black Lestrange
   • Eventual Happy Ending

   Summary

   During the chaotic battle in the Department of Mysteries, a collision of ancient curses goes horribly wrong. Hermione Granger and Bellatrix Black are blasted back, only to wake up and discover their magical cores have been irrevocably tethered. If they step more than a few rooms apart, their blood literally boils. If one is injured, the other bleeds.
   OR...
   Hermione Granger is about to find out just how much of her light she is willing to sacrifice to survive the dark.

   Language:

   English

   Words:

   43,953

   Chapters:

   15/15

   Comments:

   76

   Kudos:

   366

   Bookmarks:

   57

   Hits:

   6,181