Beast And Beauty. Draco M/Tom R

Draco was sixteen when he got his secondary gender as a submissive werewolf... Often referred to as an omega.

Draco was sixteen when he was promised to Harry Potter a dominant Werewolf (Alpha) by his parents.

Draco was sixteen when he ran away.

Draco was barely 17 when he got captured by hunters.

and finally Draco was 21 when they found him again 5 years later in a small village.

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Tom in the ua will be slightly changed like his physical appearance just to suit the plays he grew up in in this story, also where Draco is 21 Tom is 30 so a 11 year age gap, they met when Draco was 18 and 27.
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In this story Merope after the divorce from Tomas sr didn't dump Tom in an orphanage instead she changed his name to Marvolo and fled to a small village in the middle of nowhere where they called the towns people barbarians because they completely reduced to live in Morden day they would mutch rather hunt and forage their food, make their own clothes out of fur and leather and those of a higher ranking would use animal skin sutch as bear or seal, they also preferred making their own weapons.

Marvolo grew up to be big and strong, tall and absolutely brutal and powerful, Marvolo was a powerful wizard but had no need to use magic in the small village often using his bare hands the tear his prey apart.

Marvolo became the chief of the village.