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1. The Day Harry Potter Became an Omega by snuggle_bunny

   Fandoms: Harry Potter - J. K. Rowling  

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

   17 Jan 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Harry Potter/Tom Riddle | Voldemort
   • Harry Potter/Tom Riddle
   • Harry Potter
   • Tom Riddle | Voldemort
   • Tom Riddle
   • Hermione Granger
   • Ron Weasley
   • Nymphadora Tonks
   • Bellatrix Black Lestrange
   • Barty Crouch Jr.
   • Lily Evans Potter
   • James Potter
   • Sirius Black
   • Alpha/Beta/Omega Dynamics
   • Omega Harry Potter
   • Alpha Tom Riddle
   • Alternate Universe - Canon Divergence
   • Alternate Universe - Time Travel
   • Dimension Travel
   • shifting timelines
   • Tom Riddle is Obsessed with Harry Potter
   • Smitten Tom Riddle
   • Simp Tom Riddle
   • Harry Potter is a Menace
   • Harry Potter Needs a Hug
   • Feral Harry Potter
   • Unhinged Tom Riddle
   • Adult Harry Potter
   • Eventual Smut
   • Parselmouths & Parseltongue (Harry Potter)
   • Tom Riddle Has Feelings
   • Tom Riddle is a Little Shit
   • Sane Tom Riddle
   • Emotional Hurt/Comfort
   • Explicit Sexual Content
   • Sexual Tension
   • Scenting
   • Cuddling & Snuggling
   • Pureblood Culture (Harry Potter)
   • Pureblood Politics (Harry Potter)
   • Pining
   • Attempt at Humor
   • Enemies to Lovers
   • Strangers to Lovers
   • Forced Proximity
   • Powerful Harry Potter
   • Powerful Tom Riddle
   • Alpha/Omega Instincts
   • Mating Cycles/In Heat
   • Scent Marking
   • Flustered Harry Potter
   • Bottom Harry Potter
   • Top Tom Riddle
   • Alpha Tom Riddle/Omega Harry Potter
   • Dom/sub Undertones
   • Department of Mysteries (Harry Potter)
   • Other Additional Tags to Be Added

   Summary

   Harry Potter has dealt with a lot of nonsense in his life.
   Becoming an omega in a completely different timeline?
   Yeah, that’s new.
   Especially when the first alpha he meets is Tom Riddle. Alive, gorgeous, smug, and far too interested in the confused omega wobbling in front of him.
   Harry’s trying to find his team, keep his dignity, and resist Tom’s stupid unfair face. It’s not going well.

   Language:

   English

   Words:

   120,884

   Chapters:

   14/?

   Comments:

   1,758

   Kudos:

   2,722

   Bookmarks:

   891

   Hits:

   60,586