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1. Where Devils Keep What Is Theirs by ratchel1870

   Fandoms: Kuroshitsuji | Black Butler, Kuroshitsuji (2014)  

   • Explicit
   • Graphic Depictions Of Violence, Rape/Non-Con
   • F/M
   • Work in Progress

   26 Feb 2026

   Tags

   • Graphic Depictions Of Violence
   • Rape/Non-Con
   • Sebastian Michaelis/Reader
   • Sebastian Michaelis/Original Female Character(s)
   • Sebastian Michaelis & Original Female Character(s)
   • Sebastian Michaelis/Original Character(s)
   • Sebastian Michaelis & Reader
   • Sebastian Michaelis & Ciel Phantomhive
   • Sebastian Michaelis/Ciel Phantomhive
   • Ciel Phantomhive/Reader
   • Ciel Phantomhive/Original Female Character(s)
   • Sebastian Michaelis
   • Ciel Phantomhive
   • Original Female Character(s)
   • Original Characters
   • Original Character(s)
   • Rough Sex
   • Rough Kissing
   • Oral Sex
   • Cunnilingus
   • Demon Sebastian Michaelis
   • Vaginal Fingering
   • Blindfolds

   Summary

   He was always going to destroy something for her.

   He simply hadn’t decided how much.

   When an engineered horror begins hunting the immortal governess of the Phantomhive household, Sebastian learns that some evolutions of mankind should never have been invented.

   And Isabella learns exactly what it means to be chosen by a devil.

    
   The story continues in Part II of Ad Infinitum.
   For the beginning of Isabella and Sebastian’s descent, see Part I: “The Deathless Among the Damned.”

   Series

   • Part 2 of Ad Infinitum

   Language:

   English

   Words:

   22,381

   Chapters:

   30/?

   Kudos:

   15

   Bookmarks:

   4

   Hits:

   410