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   Jai Guru Deva, Om by ThessyNyx

   Fandoms: Harry Potter - J. K. Rowling  

   • Explicit
   • Graphic Depictions Of Violence
   • M/M
   • Work in Progress

   11 Feb 2026

   Tags

   • Graphic Depictions Of Violence
   • Regulus Black/James Potter
   • Sirius Black/Remus Lupin
   • James Potter
   • Regulus Black
   • Sirius Black
   • Remus Lupin
   • Mary Macdonald (Harry Potter)
   • Lily Evans Potter
   • Marlene McKinnon
   • Dorcas Meadowes
   • Barty Crouch Jr.
   • Evan Rosier
   • Pandora Lovegood
   • Peter Pettigrew
   • doctor who - Freeform
   • Based on Doctor Who
   • James is the Doctor
   • Regulus is his companion
   • Violence
   • Aliens
   • Outer Space
   • Time Travel
   • Fluff
   • Angst
   • Minor Sirius Black/Remus Lupin
   • they're a bit in the background
   • sorry - Freeform
   • Eventual Smut
   • Smut
   • Explicit Sexual Content
   • Every chapter is a different episode
   • You don't need to have watched the show
   • But you should watch it
   • Because it's amazing
   • Trans Regulus Black
   • Happy Ending
   • Marauders Era (Harry Potter)
   • This is going to be long
   • but also not really
   • i don't know how to explain it
   • Timey Wimey Nonsense (Doctor Who)
   • Regulus Black & Sirius Black Have a Good Relationship
   • James Potter Loves Regulus Black
   • Regulus Black Is The Most Important Person In The Universe
   • like genuinely
   • Autistic Regulus Black
   • It's undiagnosed though
   • Age Difference
   • James is 900
   • Praise Kink
   • I wasn't going to add that one but I feel it's necessary
   • Regulus Black Has a Praise Kink
   • Hurt/Comfort
   • Minor Barty Crouch Jr./Evan Rosier
   • Minor Marlene McKinnon/Dorcas Meadowes
   • Alternate Universe
   • Alternate Universe - Doctor Who Fusion
   • Found Family
   • Sirius Black & James Potter Friendship
   • Alternate Universe - Time Travel

   Summary

   Regulus lives every day the same. Work, eat, sleep, repeat. That is, until a strange man who calls himself 'the Doctor' takes him away to see the universe.

   or;

   Doctor Who AU - James as the Doctor, Regulus as his companion. Time travelling, universe-exploring jegulus with plenty of angst but also happiness, I promise! You don't have to have seen the show to be able to read this (but you should, because it's an amazing show)

   Language:

   English

   Words:

   676,420

   Chapters:

   48/?

   Comments:

   600

   Kudos:

   285

   Bookmarks:

   100

   Hits:

   14,658

   Bookmarked by Peeble07

   12 Nov 2025