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1. Regulus Black and the Magical Sanatorium of St. Mungo’s by Secretly_A_Mermaid

   Fandoms: Harry Potter - J. K. Rowling  

   • Explicit
   • Creator Chose Not To Use Archive Warnings
   • M/M
   • Work in Progress

   01 Nov 2025

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Regulus Black/James Potter
   • Alternate Universe - Prison
   • Period-Typical Homophobia
   • Janus Thickey Ward (Harry Potter)
   • First Time
   • Top James Potter
   • Bottom Regulus Black
   • Size Difference
   • Prison Sex
   • Dacryphilia
   • Forced Feminization
   • Feminization
   • Forced Orgasm
   • Humiliation
   • Mental Health Issues
   • Implied/Referenced Suicide
   • Breeding
   • Infidelity
   • Implied/Referenced Cheating
   • Hate Sex
   • Enemies to Lovers
   • Rough Sex
   • Porn With Plot
   • Somnophilia
   • Dissociative Identity Disorder
   • Multiple Personalities
   • DILF James Potter
   • Loss of Virginity
   • St Mungo's Hospital (Harry Potter)
   • Daddy Kink
   • Implied/Referenced Child Abuse
   • Implied/Referenced Rape/Non-con
   • Implied/Referenced Incest
   • Psychosis
   • Internalized Homophobia
   • Military Homophobia
   • Childhood Trauma

   Summary

   Regulus Black’s family buried a casket with his name on it after they locked him up. In the total isolation of a madman’s prison cell, his jarring suicide attempt— and every wretched thing he suffered before it— feels far, far away. Maybe he’s getting better.

   Then James Potter gets canned for being a drunk sodomite, and all those wretched things come rushing right back.

   TLDR; Jegulus gets 5150’d. They go a little mad. Love-in-lockup happens— kind of. Can you say ‘prison wives’?

   Series

   • Part 2 of Jegulus Fics

   Language:

   English

   Words:

   35,500

   Chapters:

   7/?

   Comments:

   31

   Kudos:

   109

   Bookmarks:

   19

   Hits:

   5,609