Adult Content Warning

This work could have adult content. If you continue, you have agreed that you are willing to see such content.

• Yes, Continue
• No, Go Back

If you accept cookies from our site and you choose "Yes, Continue", you will not be asked again during this session (that is, until you close your browser). If you log in you can store your preference and never be asked again.

1. Harry Potter and the Black Dragon Legion by Cele13hrt

   Fandoms: Harry Potter - J. K. Rowling  

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

   03 Jan 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Cassiopeia Black/Harry Potter
   • Charlus Potter/Dorea Black Potter
   • Harry Potter
   • Cassiopeia Black
   • Charlus Potter
   • Dorea Black Potter
   • Henry Potter | James Potter's Grandfather
   • Arcturus Black III | Sirius Black's Grandfather
   • Gellert Grindelwald
   • Vinda Rosier
   • Fleamont Potter
   • Euphemia Potter
   • Alternate Universe - Time Travel
   • Dimension Travel
   • War
   • Wards (Harry Potter)
   • Potions
   • Healing
   • Great Wizarding War
   • Black Dragon Legion
   • Veela (Harry Potter)

   Summary

   AU. 10 years post-war, Harry is working as a Hit-wixen when a ritual he helps disrupt hurls him across time and space into a slightly alternate 1940. Now with a chance to avert a tragedy that shaped Britain for decades, Harry joins up with his relatives in the famed Black Dragon Legion as the fight against Grindelwald rages. Will his future knowledge and skill turn the tide? Or will history repeat itself once more, and the Legion is shattered by the man wielding the Elder Wand?

   Language:

   English

   Words:

   6,093

   Chapters:

   2/?

   Comments:

   6

   Kudos:

   23

   Bookmarks:

   11

   Hits:

   313