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   Through the Looking Glass by BlackStarGazer for Heated_Mausoleum

   Fandoms: Harry Potter - J. K. Rowling  

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

   24 Sep 2025

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Regulus Black/Sirius Black
   • Sirius Black/James Potter
   • Sirius Black/Remus Lupin
   • Remus Lupin/James Potter
   • Regulus Black/James Potter
   • Regulus Black/Remus Lupin
   • Regulus Black/Sirius Black/Remus Lupin/James Potter
   • Barty Crouch Jr./Evan Rosier
   • Pranks and Practical Jokes
   • Bets & Wagers
   • Starts out innocent quickly becomes not that innocent
   • Dead Dove: Do Not Eat
   • Incest
   • Sibling Incest
   • doppleganger
   • Dopplebanger
   • Fellas is it gay to wanna fuck your brother?
   • Fellas is it gay to give your brother a slow once over and memorize what he looks like?
   • slowburn
   • The noncannibalistic urge to taste your brother
   • “Brotherly” dates are sus as fuck
   • Weaving flower crowns as you mend your brotherhood
   • Daisy chaining is the new snowballing
   • Dubcon Kissing
   • and frottage
   • Shakespearean Comedy
   • Comedy of Errors
   • Sirius may be the brightest star but he’s not the brightest boy

   Summary

   Sirius and Regulus make a bet and prank their friends. What starts out as an innocent breather from their friend's drama and a chance to get to know reunite by walking in each other's shoes turns wild as they get to know more about each other than they planned.

   P.S. I'm terrible at summaries.

   Language:

   English

   Words:

   71,014

   Chapters:

   23/?

   Comments:

   353

   Kudos:

   567

   Bookmarks:

   113

   Hits:

   20,814

   Bookmarked by Avior_Black

   05 Jan 2026